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China Pneumatic Actuator Wafer Butterfly Valves Manufacturer, Exporters
Product Description
Our valve has standard thickness according to GB26640, makes it capable of holding high pressure when needed.
Our valve seat use imported nature rubber, with more than 50% of rubber inside. The seat has a good elasticity property, with long service life. It can be open and close more than 10,000 times with no damage for the seat.
The valve seat with 3 bushing and 3 O ring, helps supporting the stem and guarantee the sealing.
The valve body use high adhesive force epoxy resin powder, helps it adhere to the body after melting.
Bolts and nuts use ss304 material, with higher rust protection capability.
Butterfly valve pin use modulation type, high strength, wear-resisting and safe connection.
Each product of ZFA has material report for the main parts of the valve.
The valve adopt epoxy powder painting process, thickness of tht powder is 250um at least. Valve body should be heating 3 hours under 200℃, powder should be solidify for 2 hours under 180℃.
Pneumatic actuator adopt double piston structure, with high precision and effective, and stable output torque.
Special Test: According to customer’s requirement, we can do any test you need.
ZFA Valve strictly execute API598 standard, we do both side pressure testing for all the valve 100%, guarantee deliver 100% quality valves to our customers.
All valve body casted by precise casting body, DI, WCB, Stainless Steel and many other materials, with perfect appearance, each batch has its casting stove number, easy to trace for material protection.
We use CNC machining to process the valve disc, control the precision of the valve by ourselves, guarantee good sealing property from low to high temperature.
Technical Specifications
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN1200 |
| Pressure Rating | PN10, PN16, CL150, JIS 5K, JIS 10K |
| Face to Face STD | API609, BS5155, DIN3202, ISO5752 |
| Connection STD | PN6, PN10, PN16, PN25, 150LB, JIS5K, 10K, 16K, GOST33259 |
| Upper Flange STD | ISO 5211 |
| Material | |
| Body | Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy. |
| Disc | DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA |
| Stem/Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat | NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
Product Gallery
Frequently Asked Questions (FAQ)
What testing standards are executed for ZFA valves?
ZFA Valve strictly executes the API598 standard. We perform 100% two-sided pressure testing for every valve to ensure complete quality compliance before delivery. Additionally, special custom tests are supported according to customer requirements.
What is the lifespan and composition of the valve seat?
The valve seat utilizes imported natural rubber with more than 50% rubber content, offering high elasticity. It is designed for longevity and can open and close over 10,000 times without causing damage to the seat.
How does the epoxy coating process ensure corrosion resistance?
The valve adopts high adhesive force epoxy resin powder with a thickness of at least 250 µm. The valve body undergoes pre-heating for 3 hours at 200°C, followed by solidification for 2 hours at 180°C, ensuring optimal adhesion and coating performance.
What materials and sizes are available for these valves?
Sizes range from DN40 up to DN1200. Valve body materials include Cast Iron (GG25), Ductile Iron (GGG40/50), Carbon Steel (WCB A216), Stainless Steel (SS304/SS316/SS304L/SS316L), Duplex Stainless Steel, Bronze, and Aluminium Alloy.
How is traceability ensured during valve manufacturing?
All bodies are manufactured via precise casting, and each production batch is clearly stamped with a casting stove number. Additionally, material test reports are provided for all main components to ensure safety and full material traceability.
What types of actuation can be mounted onto these valves?
The valves feature an ISO 5211 upper flange standard and can be configured with manual Hand Levers, Gear Boxes, Electric Actuators, or high-precision double-piston Pneumatic Actuators.
