Центр данных клапанов

The electric flanged butterfly valve is composed of an electric actuator and a flanged butterfly valve, and the flow regulation and cut-off function of the pipeline system are realized through the flanged connection. Its core structure adopts double eccentric or three eccentric design (such as three-dimensional eccentric metal hard seal), and drives the disc 0-90° rotation by electric actuator, with fast opening and closing, low flow resistance and precise control characteristics. The sealing form is divided into soft seal (rubber, PTFE, suitable for ≤180℃) and hard seal (stainless steel, Stairi alloy surfacing, temperature resistance up to 600℃), to meet the needs of different media and working conditions. The valve is suitable for water, steam, oil, corrosive media and fluid containing particles, widely used in municipal water supply and drainage, petrochemical, power, food and medicine and other fields, support switching type, regulating type (4-20mA signal control) and explosion-proof operation. The body material can be cast iron, carbon steel, stainless steel (such as 304/316L), with pressure (up to PN6.4MPa), corrosion resistance and long life characteristics. Typical advantages include easy installation, two-way sealing, modular maintenance and intelligent integration, suitable for DN50-DN2000 caliber, is a key control element in industrial automation systems.

14 "(DN350) 900LB top mounted ball valve is a type of high pressure, large diameter pipe design valve, using the top mounted structure, seat, ball and other components are loaded from the top, support online maintenance, no need to disassemble the pipe can replace the seal, greatly reducing maintenance costs. Its body is an integral forged or cast steel structure, in line with API 6D, ASME B16.34 standards, pressure Class 900 (about 15MPa), applicable temperature range -29℃~550℃, can be adapted to water, steam, oil, natural gas and corrosive media containing particles. The valve uses a bidirectional metal hard seal design, the sealing surface is cemented carbide surfacing (such as Stairi alloy) or 304/316 stainless steel flexible graphite combination, combined with eccentric ball and self-compensating seat structure, to achieve zero leakage under high pressure conditions, and low opening and closing torque (less than 20% lower than traditional valves). Its fire and anti-static design meets API 607/6FA standards, ensuring safety under extreme conditions. The drive mode supports manual, worm gear, pneumatic or electric (such as DZW series actuators) to meet the automation control needs of petrochemical, natural gas transmission, electric power and other fields.

Three-stage forged steel ball valve adopts split body structure (body, left and right valve cover three-part combination), suitable for high pressure, high temperature and harsh media environment, such as oil, gas, chemical and power systems. Its core design includes forged steel valve body (A105, F304 and other materials), through the overall forging process to avoid sand hole defects, pressure grade up to Class 2500 (about 42MPa), applicable temperature range -196℃~550℃. The valve uses a bidirectional metal hard seal or soft seal structure (such as PTFE/ carbon fiber composite seal ring), combined with spring preloaded seat technology to achieve zero leakage under high pressure, and has automatic pressure relief to prevent abnormal pressure increase in the central cavity. Its topside design supports online maintenance and allows replacement of seats and seals without removing pipes, significantly reducing maintenance costs. In addition, the valve is equipped with a fireproof, anti-static construction (according to API 607/6FA) to ensure safety under extreme conditions.

Pneumatic film control valve is the core executive unit of industrial automation control, composed of pneumatic film actuator and valve body assembly, by receiving 4-20mA control signal to drive valve core displacement, to achieve accurate adjustment of fluid flow, pressure, temperature and other parameters in the pipeline. Its core structure includes corrugated diaphragm, balance spring and push rod, compressed air (0.2-1.0MPa) as the power source, through the deformation of the diaphragm to generate thrust, drive the valve core and the seat, change the flow cross-sectional area, complete the opening control. The valve adopts single-seat or two-seat design, single-seat valve seal is excellent (leakage level up to ANSI Class IV/V), suitable for high pressure difference, high precision scenes; The flow coefficient of the two-seat valve is large, but the balance is better. The sealing material can be PTFE, graphite or metal hard seal, suitable for a wide temperature range of -196 ° C to 450 ° C and corrosive media (such as acid, alkali, steam, etc.), pressure grade covering PN1.6 to PN64 (up to Class 2500).

The baffle valve is a kind of valve that realizes the medium on-off control through the vertical lifting of the gate, which is mainly used for the flow regulation or cutting of solid particles, powders and fluid pipelines. Its compact structure, reliable sealing, divided into manual, electric, pneumatic three driving modes, suitable for metallurgy, electric power, chemical, environmental protection and other industries. 1. Structure design: Using valve body, gate, screw and other components, some models are equipped with bellows seal or elastic seat, with anti-wear automatic compensation function, extend service life. 2. Sealing performance: soft seal (rubber/fluorine rubber) and hard seal (metal surfacing), temperature range -29℃~650℃, pressure up to 2.5MPa,Suitable for corrosive media or high temperature and pressure conditions. 3. Flexible operation: manual light economy; The electric/pneumatic model supports remote control, fast response (such as fast closing valve 0.5 seconds off), suitable for automation systems.

The electric fluorine lined butterfly valve is composed of an electronic electric actuator and a fluorine plastic lined butterfly valve. The valve body, plate and stem are lined with polymer materials such as fully lined polytetrafluoroethylene (F4), polytrifluorovinyl chloride (F3) or polyperfluorinated ethylene propylene (F46) to give it excellent corrosion resistance. It can withstand strong corrosive media such as concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, organic solvent, and even acid-base alternating environment. Valve is divided into switch type (direct control of opening and closing) and regulation type (accurate flow control through 4-20mA signal), support flange, clamp two connection methods, suitable for DN50~DN2000 caliber, nominal pressure up to PN1.0~2.5MPa (some models up to Class 2500), Applicable temperature range -20℃~200℃ (special design can be extended to 450℃). Its compact structure, light weight, 90° rotary opening and closing quickly, the seal can be replaced online, to achieve two-way zero leakage, and the operating torque is only 1/5 of the traditional valve. Suitable for chemical, petroleum, pharmaceutical, food, electric power and other industries, especially suitable for corrosive fluid or containing granular media pipe control, can replace gate valve, globe valve and other traditional valves, is the key equipment of automatic control system.

High performance pneumatic butterfly valve is an advanced fluid control device that combines pneumatic actuator and butterfly valve structure, specially designed for high frequency opening and closing, high precision adjustment and harsh working conditions. It adopts double eccentric or triple eccentric structure, through the spherical sealing surface or floating valve seat design, to achieve dynamic sealing effect, significantly reduce the friction between the seal and the butterfly plate, reduce operating torque and extend the service life (such as double eccentric structure can reduce more than 90% friction). The body material covers stainless steel (304/316), carbon steel, alloy, etc., sealing surface can be selected PTFE, RTFE, metal seal, etc., to adapt to a wide temperature range (-60℃ to 600℃), to meet the control needs of water, gas, oil, corrosive media and even high temperature steam. The product has both regulating and cutting functions, and supports bi-directional sealing. It is widely used in metallurgical, petrochemical, electric power, water treatment, food and medicine industries. Its compact structure, small flow resistance, flow capacity close to the same caliber ball valve, and the installation form is flexible (clamp/flange type), suitable for automatic control system. Some models pass the API 607 fire test and have an anti-static design that meets industrial safety standards. Through the integration of intelligent positioner or limit switch, the remote automatic control of flow, pressure and other parameters can be accurately achieved, which has become one of the core components of modern industrial pipeline systems.

DN300 micro retarding check valve is a kind of automatic valve specially used in pipeline system to prevent media backflow and eliminate water hammer effect, mainly installed in the pump outlet or the key node of the water supply and drainage network. The valve adopts a two-stage closing technology: automatically open the valve disc through the medium flow thrust, quickly close 80% of the cross-sectional area to block the counter-flow when stopping the pump, and then slowly close the remaining 20% through the hydraulic slow closing system (including piston assembly and needle regulator), effectively reduce the water hammer impact pressure, protect the safety of pipelines and equipment. It is compact and weighs only 1/4-1/20 of the traditional check valve. The streamlined design allows the flow resistance coefficient to be as low as 0.1-0.3. It is suitable for clean water, sewage, sea water and slightly corrosive liquids. The operating temperature range is 0-80℃ (up to 200℃). The body material can be gray cast iron, cast steel or stainless steel, sealing surface is made of nitrile rubber or metal hard seal, both wear and corrosion resistance, support flange connection (GB/T 17241.6 standard). The nominal pressure of DN300 model is PN10-PN25, the flange diameter is 300mm, and the slow closing time can be accurately controlled within 3-60 seconds through the micro-control valve, which is suitable for complex working conditions in chemical, municipal, electric and other fields.

8 "-900LB Low temperature ball valve is designed for extreme low temperature conditions, suitable for liquefied natural gas (LNG), liquid oxygen, liquid nitrogen and other media, working temperature can be as low as -196℃, pressure class up to ANSI 900LB (about 15.0MPa). The valve adopts a long neck valve cover structure, which can effectively isolate the low-temperature medium from the external environment by extending the neck of the valve cover, prevent the stuffing box from freezing and reduce heat transfer, and ensure the reliability of the seal. The main material is made of austenitic stainless steel (such as CF8, CF8M or 316L, etc.), with excellent low temperature brittleness and corrosion resistance, the valve seat and sealing material are PTFE or PCTFE, which ADAPTS to the sealing needs of frequent opening and closing in the deep cold environment. In terms of design, the valve is equipped with pressure relief structure to avoid the risk of abnormal pressure increase caused by residual medium gasification. At the same time, it supports flange or welding connection to meet the requirements of high pressure pipeline sealing. The manufacturing process complies with international standards such as API 6D and BS6364, and has passed API598 and ISO15848 leak tests to ensure safety and durability under low temperature conditions. The product is widely used in air separation equipment, petrochemical industry and energy storage and transportation systems, especially for the accurate control of flammable and explosive media such as liquid oxygen and liquid nitrogen, with fast switching and low maintenance characteristics.

All metal forged steel ball valve is formed by forging process, using A105, F316L or chromium molybdenum steel and other forged steel, through precision processing and heat treatment to enhance the structure density and impact strength, specially designed for oil, natural gas, chemical industry and other high pressure, high temperature and corrosive media conditions. Its core structure integrates bidirectional metal hard sealing system, surfacing cobalt-chromium-tungsten or nickel-based alloy layer (hardness ≥HRC55) on the surface of the ball and the seat, combined with spring pretightening technology to achieve bidirectional zero leakage (leakage grade up to ISO 15848 B), suitable for Class 150~2500 (PN16~420) pressure grade. Temperature range covers -196℃~550℃, especially suitable for long period stability control of sulfur-containing oil and gas, high temperature steam and strong acid media. The valve is of fixed shaft or floating ball construction, equipped with fireproof design (according to API 607 standard), and the metal seat is forcibly sealed with the ball in case of fire to prevent media leakage; The antistatic device eliminates friction static electricity through a conductive spring between the valve stem and the ball. The forged steel body has been nondestructive tested (UT/RT) to ensure that it is free of internal defects and supports flange or butt welding connections (ASME B16.5/GB/T 12224) for long haul pipelines, refining and chemical units and supercritical units. The products comply with API 6D, ASME B16.34 and other standards, with low flow resistance, high sealing and maintenance-free characteristics, is the key equipment for safe cut-off and flow regulation under extreme conditions.

28 "-2500LB gate valve is specially designed for ultra-high pressure, large diameter working conditions, suitable for oil, natural gas and chemical fields of high temperature, corrosive media control, its heat treatment process is the core link to ensure performance. The main body of the valve is made of A105, F22 or Haselloy C-276 and other forged steel. The density and mechanical strength of the material are enhanced by forging process. The residual stress of the valve body and valve cover is eliminated by stress relief annealing (600~650℃ thermal insulation and slow cooling), and the cutting performance is improved. After surfacing with Co-Cr-W cemented carbide or nickel-based alloy, secondary heat treatment is required to enhance erosion resistance and high temperature resistance (up to 550℃), while combining with spring pretightening technology to achieve bidirectional metal hard seal to meet the zero leakage requirements under 2500LB (about 42MPa) pressure class. The design complies with API 600, ASME B16.34 and other standards. The valve stem is tempered to improve hardness and torsion-strength. The packing box is made of flexible graphite or PTFE, and the stability from low temperature (-29℃) to high temperature conditions is ensured by micro-leakage test. The welded end or flange connection structure is suitable for large diameter pipes, and the pressure relief design of the valve chamber automatically releases the risk of abnormal pressure increase, and passes the API 598 pressure test and ISO 15848 escape test. These valves are widely used in LNG transportation, supercritical power plants and refining and chemical plants, with long life, low maintenance and extreme conditions.

**DN2600-550℃ High temperature butterfly valve ** Designed for large diameter, harsh high temperature conditions, suitable for metallurgy, electric power, chemical and other industries of high temperature flue gas, dusty gas and industrial gas pipeline system, the highest temperature tolerance of 550℃. The valve body is made of cast steel (WCB), stainless steel (304/310S) or high-temperature alloy material, and the internal nickel-based alloy layer is surfacing to resist media erosion and corrosion. Double eccentric or three eccentric metal hard seal structure, pre-set thermal expansion compensation gap between the seat and the butterfly plate, combined with spring assisted sealing technology, effectively avoid high temperature deformation caused by sticking, to ensure opening and closing flexibility and sealing reliability, leakage level up to ISO 15848 B standard. Suitable for DN2600 large diameter flange connection (in accordance with ASME B16.5/GB/T 9113), the valve is equipped with electric, pneumatic or worm gear drive and supports remote control and rapid adjustment (opening and closing time ≤30 seconds /90°). The stem uses self-lubricating bearings and multiple sealing system (flexible graphite PTFE packing), and the integrated radiator protects the actuator to avoid high temperature heat conduction damage. The design follows API 609, ISO 10631 and other specifications, through high temperature conditions simulation test and shell strength test, with wear resistance, low escape and long period maintenance-free characteristics, widely used in waste heat boiler, furnace smoke exhaust and energy recovery system.

As the key connection of the pipeline system of the west-east gas transmission project, the non-standard flange is specially designed for complex working conditions and special size requirements, breaking through the standardization restrictions of the national standard flange (GB/T 9112~9124), and can be adapted to DN15-DN2000 pipe diameter and Class 150-Class 2500 pressure levels. It adopts integral forging, CNC machining and other processes, combined with spring preloading technology and metal hard seal structure, to ensure high pressure (such as 42MPa) and extreme temperature (-196℃ to 550℃) under the seal reliability. Products through API 6D, ISO 15848 and other standards certification, support flange, butt welding and other connection methods, to meet the west to east gas transmission large diameter (such as 28"-2500LB) pipeline corrosion resistance, erosion resistance and long-term maintenance free requirements. The main material of the flange is A105, 316L or X80 forged steel, surfacing nickel-based alloy or hard coating to enhance corrosion resistance. Designed with integrated pressure relief function, can automatically release abnormal pressure, and equipped with fire, anti-static structure, in accordance with API 607/6FA safety specifications. In the second-line and third-line projects of West-east gas transmission, non-standard flanges are widely used in station equipment, valve connection and LNG transmission pipeline, which can adapt to automatic welding process and significantly improve construction efficiency and system stability. Its flexible and customized characteristics provide highly adaptable solutions for complex terrain and high-pressure environments, becoming one of the core components to ensure the safe operation of energy arteries.

China Gas High pressure welding ball valve is specially designed for long distance natural gas pipeline and urban gas pipe network, suitable for pressure ≤40MPa, temperature -29℃~200℃ harsh working conditions, covering DN15-DN1400 pipe diameter range. The valve adopts all-welded forged steel body structure, formed by solid square steel or free forging process, and integrates seamlessly with the pipeline by butt welding connection to ensure the tightness of the pipe network. The sealing system uses hard metal sealing technology, surfacing nickel-base alloy or tungsten carbide on the ball surface, and the valve seat is equipped with spring preload and O-ring dual protection to support two-way sealing and fire protection (API 607/6FA standard), which can maintain a metal-to-metal seal in extreme conditions such as fire. Its compact design length is only 1/3 of the ordinary ball valve, and it can be welded before assembly during installation, greatly improving construction efficiency. The ball valve is integrated with an anti-static device to guide the static electricity between the ball and the valve body to the ground through the valve stem to eliminate the risk of deflagitation in gas transmission. A grease valve on the back of the seat allows for quick repair when the seal is damaged by injection of PTFE or nylon 1010 grease, while supporting regular lubrication for extended life. The main material is A105 forged steel or 304/316 stainless steel, suitable for natural gas, liquefied petroleum gas and other media, and passed API 598, ISO 15848 leakage test, leakage rate ≤1.5%. The driving modes include manual, pneumatic and electric, which meet the needs of automatic control, and are widely used in urban gate stations, pressure regulating facilities and high pressure transmission pipelines, with advantages of high strength, low maintenance and long-term stable operation.

Pneumatic fluorine-lined discharge valve is designed for highly corrosive media, widely used in chemical, pharmaceutical, petroleum and food processing industries, mainly used for the bottom discharge of reactor, storage tank and other containers, to eliminate the problem of medium residue. Its core structure adopts fluorine plastic (such as PTFE, FEP, PFA) lining technology, the valve body, valve disc and valve stem and other key contact parts are covered with corrosion resistant lining, can withstand hydrochloric acid, nitric acid, aqua rega and other strong acids and organic solvents. The valve is driven by a pneumatic actuator, compressed air drives the piston to drive the valve stem movement, to achieve rapid opening and closing (usually ≤30 seconds /90°), some models support manual or electric assistance operation, suitable for DN25-DN350 pipe diameter and PN6-PN16 pressure levels. The valve adopts conical spool or metal hard seal structure, combined with spring preloading technology, to ensure zero leakage seal under high temperature (-30℃~180℃) and high pressure (≤2.5MPa). The flat-bottom valve body design and V-shaped flow channel can reduce the crystallization and residue of the medium, especially for the condition of containing particles or prone to scarring. In addition, the seat sealing ring is hardened (hardness HRC56-62), strong erosion resistance, and supports online grease injection maintenance, extending service life. The products comply with API 598, ISO 15848 and other standards, combined with corrosion resistance, flexible operation and low maintenance advantages, are the core components in the field of corrosive media control.

Pneumatic control butterfly valve with compressed air as the power, drive the butterfly plate 0°~90° rotation, accurate adjustment or rapid cut off the pipeline medium, specially designed for petroleum, chemical, electric power and other industries complex conditions. The valve adopts a triple-eccentric metal hard seal or elastic soft seal structure, suitable for DN15-DN1000 pipe diameter and PN1.0-PN25 pressure class, suitable for temperatures ranging from -196 ° C to 550 ° C, can cope with high temperature and pressure, corrosive gases (such as acid fog, dust, steam) and viscous fluid demanding, Leakage level up to ISO 15848 Class B standard. Multi-layer metal seal or composite elastic valve seat (such as EPDM, PTFE) is integrated in the research and development, and the surface of the butterfly plate is surfacing with cobalt-chrome-tungsten alloy, combined with spring preloading technology to achieve bi-directional zero leakage; Integrated electrical positioner and 4-20mA signal input, support remote intelligent adjustment, response time ≤5 seconds, accuracy error ≤2.5%, and equipped with explosion-proof, anti-static function. The body adopts lightweight ductile iron or 316L stainless steel, streamlined butterfly plate reduces flow resistance (pressure drop < 0.1MPa), flange or clamp connection saves 40% installation space, ADAPTS automatic welding process, and reduces maintenance cost by 30%. The products are widely used in energy transmission, metallurgy and water treatment systems to promote the intelligent upgrading of industrial control with high sealing, fast response and multi-media compatibility.

Electric flat gate valve is an electric actuator driven valve, designed for high pressure pipelines in the oil, gas, chemical and energy industries, suitable for medium cut-off and flow regulation. Its core structure adopts parallel ram, divided into two types with and without diversion holes, suitable for DN15-DN2600 pipe diameter and Class 150~2500 (PN16~PN420) pressure grade, the maximum temperature can reach 550℃, Meet the requirements of high temperature and high pressure and corrosive media (such as crude oil, natural gas, sulfur gas). The valve has a floating seat and double gate construction, combined with spring preloading technology and a hard alloy sealing surface (such as cobalt-chromium-tungsten or nickel-based alloy surfacing) for a bi-directional zero-leakage seal. Electric actuator supports remote control and automatic regulation, integrated 4-20mA signal input and explosion-proof function, response time ≤30 seconds, suitable for flange or butt welding connection standards (such as ASME B16.5, GB/T 9113). Body material selection WCB cast steel, 316L stainless steel or forged steel, both high strength and corrosion resistance; The stem is nitrided, wear-resistant and impact-resistant, and is equipped with self-lubricating bearings and multi-packing sealing system (flexible graphite PTFE) to effectively reduce the risk of escaping leakage. The products comply with API 6D, JB/T 5298 and other international standards, and are widely used in long-distance pipelines, LNG storage and transportation and energy recovery systems, with advantages of flexible opening and closing, easy maintenance and long-term stable operation.

The gate valve is specially designed for thermal power generation, petrochemical and other ultra-high pressure and high temperature conditions, suitable for water, steam, oil and other media, the maximum pressure 42MPa (2500LB), temperature up to 570℃, suitable for large diameter pipeline (26 inch diameter) opening and closing control needs. The body is made of forged steel (such as A182 F22, WC9, etc.), and the structural strength and creep resistance are improved by the overall forging process. The design of the valve cover is combined with the pressure self-tightening, and the reliability of the seal is enhanced by the medium pressure to avoid the risk of leakage under high temperature and high pressure. Internal wedge single or double ram structure, sealing surface surfacing of Stellite alloy or tungsten carbide coating, erosion resistance and support for two-way sealing, while equipped with anti-ejection valve stem and flexible graphite packing to ensure long-term stability. products comply with API 600, ASME B16.34 and other international standards, using butt welded (BW) or flange and seal welding, suitable for power station main steam pipeline, boiler feed water system and other harsh conditions. The drive is electric and geared, supports remote control and fast response, the stem is nitrided to enhance wear resistance, and the integrated fire protection structure (maintaining a hard metal seal in case of fire) and anti-static devices comply with API 607 safety specifications. Its compact flow path design reduces pressure loss, and its mounted structure facilitates online maintenance and reduces downtime. It is widely used in supercritical units, LNG units and energy delivery systems with high reliability, long life and low maintenance costs.

Dual seat forced-seal track ball valves combine track motion with dual seal redundancy and are designed for the harsh conditions of high pressure, high corrosion and granular media. The valve adopts a double piston effect sealing structure, through the bottom of the valve stem and the spiral groove, drive the ball first tilt away from the seat and then rotate 90°, to realize the whole process of opening and closing without friction [[1][5]]. Its core advantage is the dual seat bidirectional sealing function - when the inlet or cavity pressure changes, the seat automatically adjusts the fit to the ball under the action of thrust difference, ensuring zero two-way leakage (leakage class ISO 15848 B), and if one seat is damaged, the other seat can be sealed independently, significantly improving system reliability [2][13]]. valve sealing surface is surfacing welded cobalt-chromium-tungsten or nickel-based cemented carbide (hardness ≥59HRC), temperature range covering -196℃~550℃, suitable for Class 150~2500 (PN16~420) pressure grade, suitable for natural gas, petrochemical industry and hydrogen sulfide medium transportation system [5][13]]. Designed with integrated pressure relief structure, the valve chamber pressure relief valve prevents the risk of abnormal pressure increase due to temperature changes, and is equipped with mechanical wedge force forced sealing and self-cleaning function - when the ball is tilted away, the medium washes the sealing surface 360°, removing impurities and reducing erosion [2][6]]. In addition, the stem double guide pin and spiral slot ensure low torque operation, manual, electric or pneumatic drive mode, suitable for flange, butt welding and other connection standards, combined with long life, low maintenance and complex conditions [1][5][13]].

The American standard jacking plug valve is specially designed for the harsh working conditions of petroleum, chemical, electric power and other industries, suitable for nominal pressure Class 150~900LB (up to 42MPa), operating temperature -29℃~180℃ pipeline system, can accurately cut off or connect water, steam, oil, nitric acid and acetic acid media. The core innovation is the 360° metal lip sleeve sealing structure - the sleeve is wrapped in PTFE material and self-cleaning function through the metal lip when the cock rotates, effectively avoiding the scale and blockage caused by viscous or particulate media, while eliminating the valve cavity cavity and reducing the risk of media residue. The valve is designed for two-way flow and supports flange, butt or socket connections (in accordance with ASME B16.5/GB/T 9113) in the DN15 to DN600 pipe diameter range. The body material can be ASTM A216 WCB cast steel, stainless steel (such as CF8, CF3M) or nickel-based alloy, sealing surface surfacing carbide to enhance corrosion and erosion resistance. The products comply with API 599, API 6D and ASME B16.34 standards, pass API 598 leak test, and have low flow resistance, fast opening and closing, and long period maintenance-free characteristics, which are widely used in LNG transportation, refinery and high temperature and high pressure pipeline systems.

The water-cooled high temperature gas-hand blind valve is specially designed for high temperature media such as gas, toxic and harmful gases, with a maximum temperature resistance of 600℃, suitable for DN600 and other large diameter pipeline systems. It adopts pneumatic and manual dual drive mode, the main material is 304 stainless steel or carbon steel, the internal integrated water-cooled jacket structure, through circulating water cooling valve body and sealing parts, effectively reduce the impact of high temperature environment on sealing performance, extend the service life. The valve body consists of a left valve body, a right valve body, a valve plate and a lead screw pair. The clamping mechanism is linked with a lever and a pneumatic device to realize a quick release or clamping of the valve body. The flap cylinder drives the valve plate to open and close, supporting remote automatic operation, and the manual mode can be switched through a wrench to ensure operational flexibility. sealing surface is made of fluorine rubber or silicone sealing ring, high temperature resistant and easy to replace, combined with metal hard sealing structure (such as stainless steel and rubber flexible sealing pair), leakage grade up to ISO 15848B, meet GB/T 13927 inspection standard. Valve integrated explosion-proof motor and fire protection design, suitable for metallurgy, chemical industry and other high-risk environment, especially suitable for blast furnace gas dust removal, LNG transportation and high temperature flue gas treatment system, with fast response (opening and closing time ≤60 seconds), low maintenance and safety redundancy characteristics. The product complies with API 607/6FA safety specifications and is widely used in harsh conditions requiring frequent cut-off and flow control.

Thermal all-welded ball valve ball is the core component of this kind of valve, made of stainless steel 304 or 316 material precision machining, the surface hardened or surfacing cobalt chromium tungsten alloy layer, with excellent high temperature resistance (-29℃~200℃) and erosion resistance, suitable for oil, natural gas, heating pipe network and other high pressure, high temperature media environment. It is designed with a floating or fixed construction, combined with three-stage sealing system, and the ball is tightly attached to the seat by spring preload, ensuring zero leakage in both directions (leakage class ISO 15848 B). ball and valve seat sealing surface adopts metal hard seal carbon fiber reinforced PTFE or RTFE composite soft seal double composite structure, which not only ADAPTS to the stability of high temperature conditions, but also takes into account the elastic compensation ability of low temperature environment. The ball machining process is precisely controlled by a computer detector to ensure geometric accuracy and surface finish, reduce opening and closing torque and extend service life. In addition, anti-static devices (such as steel balls and spring conductive structures) are integrated between the ball and the valve stem to effectively eliminate the risk of static electricity generated by media flow, in accordance with API 607 fire safety standards. The sphere is widely used in urban gas, central heating and industrial pipelines, with compact structure, maintenance-free and long-term stable operation.

16 "-2500LB ball valve series is specially designed for ultra-high pressure, high temperature and harsh medium conditions, suitable for oil, natural gas, chemical, electric power and LNG storage and transportation fields, can accurately control water, steam, oil, corrosive gas and other media. This series of ball valve adopts forged steel body (such as A105, F304, 316L or chromium molybdenum steel), combined with three-stage fixed structure, sealing surface surfacing cobalt chromium tungsten alloy or nickel based hard coating, hardness of HRC60 or more, temperature range covering -196℃ to 650℃, the highest pressure class of 42MPa (2500LB). The core design incorporates bidirectional sealing and automatic pressure relief, with built-in spring preloading technology for the seat to maintain zero leakage (leak class ISO 15848B) even when the sealing surface is worn. The fireproof structure conforms to API 607 standard, and the metal seat is forced to seal with the ball in case of fire to prevent the leakage of the medium; Anti-static device to eliminate the ball friction static risk. In addition, the valves support electric, pneumatic or worm wheel drive, fit flange or butt welded connections (ASME B16.5/GB/T 9113), and are equipped with grease injection and discharge valves for in-line maintenance and release of abnormal pressure. Products strictly comply with API 6D, ASME B16.34 and other standards, through the API 598 seal test, with high strength, long life and low maintenance characteristics, widely used in high-pressure pipelines, supercritical units and refining and chemical equipment.

Fluorine lined butterfly valve is designed for strong corrosive media, through the valve body, butterfly plate and stem flow parts lined with fluorine plastic (such as PTFE, FEP, F46, PFA) to achieve corrosion resistance, suitable for acid, alkali, salt, organic solvents and other extreme conditions. It adopts a center line or three eccentric structure, the butterfly plate can be opened and closed by rotating 90°, adapted to DN50~DN1600 pipe diameter and PN0.6~PN2.5 pressure grade, and the temperature range covers -40℃ to 200℃ (some materials can reach -50℃ to 200℃). This valve combines elastic seat and metal disc hard seal technology with a sealing surface surfacing of fluoroplastic or nickel-based alloy. The valve has a leak grade of ISO 15848B. Some models pass API 598 zero leak test. The compact design reduces flow resistance (pressure loss < 0.1MPa), supports manual, pneumatic or electric drive, ADAPTS flange or clamp connection (in accordance with ASME B16.5, GB/T 9113 and other standards), and integrates explosion-proof and fire-proof functions. Widely used in chemical, pharmaceutical, food, energy and other industries, especially suitable for LNG transportation, acid and alkali storage and transportation and high temperature flue gas treatment system, with erosion resistance, low maintenance and long life characteristics.