OEM PTFE Seat Flange Type Butterfly Valve Manufacturers, Factory
Product Description
Connection Standards: Our valve connection standards include DIN, ASME, JIS, GOST, BS etc., it’s easy for customers to choose the suitable valve, help our customers reduce their stock.
Standard Thickness: Our valve has standard thickness according to GB26640, makes it capable of holding high pressure when needed.
Durable Valve Seat: 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.
Secondary Sealing Design: The valve seat is wide edge seat, sealing gap is wider than regular type, makes the sealing for connection easier. Wider seat also easy to install than narrow seat. The stem direction of the seat has lug boss, with O ring on it, archive the second sealing of the valve.
Ultra-Sonic Cleaning: Each valve should be cleaned by ultra-sonic cleaning machine, in case of contaminant left inside, guarantee the cleaning of the valve, in case of pollution to the pipeline.
Epoxy Resin Coating: The valve body use high adhesive force epoxy resin powder, helps it adhere to the body after melting.
SS304 Fasteners: Bolts and nuts use ss304 material, with higher rust protection capability.
Ergonomic Ductile Iron Handle: Handle of the valve use ductile iron, is anti-corrosion than regular handle. Spring and pin use ss304 material. Handle part use semicircle structure, with good touch feeling.
Anti-Blowout Stem: Non-pin stem design adopts anti-blowout structure, the valve stem adopt double jump ring, not only can compensate the error in installation, but also can stop the stem being blow off.
Certified Quality: Each product of ZFA has material report for the main parts of the valve.
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN4000 |
| 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 |
We not only supply valve, but also valve parts, mainly body, disc, stem and handle. Some of our regular customers keeping order valve parts more than 10 years, we also produce valve parts mold according to your drawing.
We’re OEM manufacturer for famous customers in Moscow(Russia), Barcelona(Spain), Texas(USA), Alberta(Canada) and 5 other countries.
We have total 30 machines (include CNC, machine center, semi-auto machine, pressure testing machine, spectrograph etc.) mainly used for valve part machining.
Our valve connection standards accommodate DIN, ASME, JIS, GOST, BS, and more, allowing customers to easily match specifications and lower inventory costs.
The valve seat utilizes imported natural rubber containing over 50% rubber composition. It offers exceptional elasticity, supporting over 10,000 opening and closing cycles without damage, alongside an extra O-ring structure on the lug boss for secondary sealing.
We adopt a non-pin stem anti-blowout structure with double jump rings that compensate for installation deviations and securely stop the stem from blowing out under pressure.
Yes, we provide individual valve parts like bodies, discs, stems, and handles, and we can develop customized molds and parts directly from customer technical drawings.
Each ZFA product is accompanied by a material test report for the main parts, and all valves undergo ultrasonic cleaning to prevent internal contamination before leaving the factory.
