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Company:Wenzhou Topnotch Machine Co.,Ltd. 
Address:Dongyang Rd., Heyi Industrial Zone,Oubei Town, Yongjia County,Wenzhou,Zhejiang, China 325105
Contact Person: Mr. Kevin Tung
Tel: +86-577-67318591 67318935
MB: 86-18906638592

Valve Series

  • wafer type Full FPA /F46/ PTFE lined butterfly valve
    Wafer Style Split Body Teflon / PTFE Lined High Performance Concentric Butterfly Valves Resilient Seated and Half or Fully Lined with two-piece body design and locked-in PFA liner fully encapsulates the disc, ISO mounting pad for actuation, bi-directional sealing, lining material is available for PTFE/PFA/FEP/ETFE/PO/PP etc, wafer or lug style for 150 class flange, F46 Lined Wafer Butterfly Valves features ease of maintenance, repeatable on-off, long life durability. Teflon Lined Wafer Butterfly Valve .
  • GI/GIQ/GIDSeries Pneumatic High Vacuum Butterfly Valve
    Vacuum butterfly valve has high flow conductivity for turn on or cut off the vacuum airflow. The applicable media is air and non-corrosive gas. In order to get the control automatically.
    a) GI type manual or worm gear operated valve has multiple open and close locking function, angle degree of the plate is 0º-90º.
    b) GIQ type pneumatic vacuum butterfly valve operated by compressed air and through electromagnetic device to change the airflow control the actuator rotated then drive the valve open or closed. Actuator can be double acting and single-acting spring return type, also can driven intelligent positioner through the external input signal to control the pneumatic driving.
    c) GID series electric butterfly valve operated by electrical device to drive the valve plate to open or closed. Electric actuator is passive contact type as factory setting, can be optional on-off and regulating control type to achieve adjusting control.
  • ANSI/DIN Ventilation butterfly valve for Fume gas
    Ventilation butterfly using the same material into the valve body seals, the applicable temperature varies depending on the selection valve, nominal pressure ≤ 0.6MPa, generally applicable to industry, metallurgy, environmental protection, regulating media flow conduit for ventilation purposes, its main features is:1. Novel design, reasonable, unique structure, light weight, open and close quickly.2.Operating torque is small, easy to operate, smart victory.3. Using materials adapted to meet different medium temperature and corrosive media.
  • Inverted bucket steam traps
    The inverted bucket is the most reliable steam trap operating principle known. The heart of its simple design is a unique leverage system that multiplies the force provided by the bucket to open the valve against pressure. inverted bucket steam traps open and close based on the difference in density between condensate and steam-the inverted bucket principle. They open and close gently, minimizing wear. This simple fact means that inverted buckets are subject to less wear than some other types of traps.Inverted Bucket Steam Traps belong to the family of mechanical traps. They operate on the difference in density between steam and water.
  • Free float ball type steam traps
    Free float steam trap is one of the most advanced traps since its ability of timely discharge of the condensed water in the pipelines and heating equipment. This trap has an extensive application in petroleum, chemical industry, light textile, printing, pharmacy, paper making, foods and mines.Continues discharging saturation condensed water without accumulation, and so get the maximum thermal efficiency.When steam pressure changes, the ball float can adjust the opening of valve seat without influence, and so it is stable.With automatic and manual releaser, and so its exhaust performance is good without airlock and working is smooth without noise.
  • Thermodynamic Steam Traps
    The TANA Thermostatic Steam Traps & Thermodynamic Steam Traps are available with balanced-pressure bellows or wafer-type elements, which are constructed in a variety of materials in both stainless steel and carbon steel. These traps are used on applications with very light condensate loads.
  • Lever Ball Float Type Steam Traps
    Ball float steam traps have an integral air vent as standard and the options of a manually adjustable needle valve and drain cock tapping,the Ball floating range is adaptable to all applications where ball float traps are recommended and instantaneous removal of condensate is required.
  • HRF3 High temperature and high pressure Disc type steam traps
    HRF3 High temperature and high pressure Disc type steam traps is made of alloyed steel.It can operate in the environment of 550℃ with agile action and high quality.It is appropriate for the water discharge in the environment of high temperature and pressure.It is one of the optimal traps for the steam pipelines and steam equipment of high pressure.
    Structure:1.The automatic blowing equipment is equipped inside the valve.With new crow-type valve disc and reliable sealing performance;warm-keeping,high effective and energy-saving;
    2.Being able to rapidly discharge the gas and condensed water when started,with large amount of water discharged,and small rate of steam leakage;
    3.Strong abilities to resist corruption and enduring performances.
    4.There needs no adjustment within working pressure,excellent,excellent abilities to save energy.
  • Electric Straight Through control valve
    Electric Straight Through control valve is actuating unit of electrical unit combined apparatus. It receives direct current signal from regulating apparatus and change flow of mediums directly (e.g. liquid, gas, steam, etc.) to keep controlled technological parameters (e.g. temperature, pressure, flow, liquid level, etc.) at setting values. Electric Straight Through control valve is PS series or 3810L series straight stroke electric actuator and low flow resistance through single seat valve. (can also be equipped with other brands direct travel agencies). Electric actuator for electronic integrated structure, a servo amplifier, the input control signal (4-20mADC or 1-5VDC) and the power to control the valve, it can regulate the parameters of pressure, flow, liquid level, temperature etc.
  • 3 way converging/diverging control valve
    3 way converging/diverging control valve adopts the cage guided structure and pressure unbalanced plug. It is mainly used for converging or diverging media of several flow channels. Entering from two channels and exiting from one channel is called three-way converging, and conversely, entering from one channel and exiting from two channels is called diverging. The three-way valve can also play the pipe shut-off and opening function. The standard converging/diverging design is the unbalanced double-seat trim structure. In addition, special cages with noise reduction and anti-cavitation functions can also be designed according to the service conditions.
  • Pneumatic Diaphragm Straight Through Control Valve
    Pneumatic diaphragm straight through Control Valve is light in weight,accurate and efficient,It is a new-geraration regulating valve developed on the basis of domestic and oversea sophisticated designing technology,abundant manufacturing experience and advanced structure,which accord with IEC standard. pneumatic diaphragm straight through is one of the most widely-used and most important products in production process control systems.In this series products,pneumatic single set control valve,penumatic sleeve type control valve,pneumatic double seat control valve is one of the universal products for user to select.It applies to the process control system of general fluid mediums and technical conditions.
    Except the common advantages of pneumatic instruments,pneumatic diaphragm straight through control valve also has reliable action characteristics,accurate floow characteristics,broad adjustable range,stable operability and tiny leakage rate.
  • Cage single-seat Control Valve(analogous to "Fisher")
    Cage single-seat Control Valve(analogous to "Fisher") adopts the cage guided structure and pressure balanced plug. It is suitable for applications with relatively high differential pressure. The balanced seal ring replaces the upper seat to change the traditional cage double-seat structure into the cage single-seat structure. This improvement has greatly enhanced the shut-off class of the cage valve. The plug makes use of the pressure balanced structure, the opening and closing force is low and the media under service conditions with high differential pressure can be controlled through relatively low actuator thrust. It is widely used for fluid control on pipelines of middle and low temperatures and middle and low pressures that require good dynamic stability. With such features as good sealing performance, high allowable differential pressure, cage guiding, large guiding area, good stability and compact structure.
  • Self-operated Regulator Valve
    Self-operated regulator valve is mainly used to control pressure, temperature and flow of vapors and other industrial liquids. During its work, it can carry out the control through the medium itself without the need of using external energy. The product is provided with the built-in bellows balanced structure with excellent control performance and agile response to medium changes. This product can serve as an important part in a system to ensure efficiency and stability of the system through its outstanding performance.
  • Threaded Safety Relief Valve
    A21 type thread safety relief valve are used for the equipment and pipelines with such medium air,ammonia and petroleum at a working temperature less than 200 ℃ .A27 type Thread safety relief valve are used for the equipment and pipelines such media as water,air and steam at a working temperature less than 200 ℃ .A28 type thread safety relief valve are used for the equipment and pipelines with such medium as of air,vapour,water and N2-H2 mixed gas at a working temperature less than 200 ℃ .
  • Pilot operated safety relief valve
    Pilot operated safety relief valve ,newly -structure,is mainly applied to such trades as petroleum&natural gas,Chemistry,electric,metallurgy&burning gas.It is the best super-pressure protecting equipment on press equipment,Container,or pipeline.It is mainly characterized by shifting direct function of spring to indirect function of guide valve,What's more,main valve,applying for sleeve piston&double sealed seat,It is characterized by high precision of action,good recycling function,fast turning back to seat,ability to high-pressure leaking,long working time&security,together with read-adjustment on line,automatic turning back to seat after leaking again and again,tight closure,operating and maintaining convenience.
  • Brass/Bronze Safety Relief Valve
    Brass/Bronze Safety Relief Valve are used for the equipment and pipeline of the steam and air medium etc.the working temperature are less than 350℃,Take for extra pressure protection devices.Flange connection dimensions of comply with standard of JB/T79.1-94,when the pressure less than 4.0Mpa,comply with standard series two of JB/T79.2-94 when more than 4.0Mpa.It can be used in different production fields and various activities such as compressed air, technical gases, fluids, chemical industries, pharmaceutical industries, food industries and water treatment.
  • Spring Loaded Safety Relief Valve For Liquid
    Spring-loaded safety relief valve works through adjusting spring force to prevent medium pressure and realize sealing purpose. Under the condition of spring force greater than medium's normal pressure, valve disc is at the close state, when medium pressure exceeds the set pressure, the spring is compressed, and lead the disc sealing faces separated, the valve open automatically, and relief pressure; When medium pressure reduced to normal pressure, the valve disc go back to valve seat under the spring force, disc sealing faces and valve seat sealed again, the valves close automatically.
  • Spring Loaded Steam Safety Relief Valve
    Spring Loaded Steam Safety Relief Valve is used in power plant boilers,pressure containers and temperature reducing devices and other facilities.It serves to prevent pressure from exceeding max. allowed value and ensure the safety of the device during working.Steam Safety Valve sizing and selection API 520(ASME secⅧ),designed API 526,test API 527(ASME PTC 25),flange ASME B16.5. This valve’s type include A48C Open Bonnet Plain Lever Safety Valve,A48Y High Temperature and High Pressure With Radiator Safety Valve,High Performance Steam Safety Valve which meets the requirement of ASME secⅠ,High Temperature High Pressure Welded Safety Valve.
  • Rubber,PTFE,PFA,F46 Lined Diaphragm Valve
    Rubber,PTFE,PFA,F46 lined Diaphragm Valve have two types : weir (saddle) type and "straight-way" type .The weir type diaphragm valve has its two ports in line with each other on the opposite sides of the valve, whereas the weir type has the in/out ports located at a 90 degree angle from one another. The weir type is the most common in process applications and more commonly used as a tank bottom valve.
  • Pilot Operated Pressure Reducing Valve
    Pilot Operated Pressure Reducing Valve, similar to Spirax Sarco Design, mainly used for steam system to reduce pressure, which is superior to normal piston type steam pressure reducing valve.Pressure reducing valve the new type pilot extra-huge membrane pressure reducing valve developed by our company. It is greatly improved on basis of normal pressure reducing valve. The membrane use new material, enlarging the working area, so the slight change of upper pressure or lower pressure can be fed back to membrane of main valve, and adjust the opening of main valve to ensure the constant pressure of lower stream pressure.Pilot Pressure Reduce Valve can realize the temperature control, upsteam pressure control, remote switch control. Super high sensitivity guide type diaphragm actuator provide a super high sensitivity regulate and flow control.

Wenzhou Topnotch Machine Co.,Ltd is a professional leader China gate valve,globe valve,check valve,butterfly valve,ball valve,Single Seat Control Valve,WCB swing check valve,flanged globe valve,stainless steel ball valve,cast steel globe valve manufacturers and suppliers with high quality and low price.Welcome to contact us!


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Contact Us

​Company:Wenzhou Topnotch Machine Co.,Ltd. 

Address:Dongyang Rd., Heyi Industrial Zone,Oubei Town, Yongjia County,Wenzhou,Zhejiang, China 325105

Contact Person:
  Mr. Kevin Tung 

Tel: +86-577-67318591 67318935


MB: 86-18906638592

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