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China CF8 Body CF8M Disc Double Flange Butterfly Valve Manufacturers, Exporters
Product Description
Compared to ductile iron butterfly valves, which have the same external configuration as the valve body, stainless steel butterfly valves clearly have some advantages.
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The material itself is corrosion-resistant, requiring no surface anti-corrosion treatment; it does not peel or rust. Even with scratches or impacts, it retains its corrosion resistance.
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It does not contaminate the medium and is highly adaptable to water, humid environments, weak acids and alkalis, and chloride ion environments, meeting the cleanliness requirements of food, water treatment, pharmaceuticals, and public utilities.
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It is unaffected by external environments (humidity, salt spray, condensation), making it particularly suitable for underground pipe racks, coastal projects, and high-humidity factories.
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Stainless steel butterfly valves have lower total lifespan costs.
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Stainless steel butterfly valves exhibit excellent low-temperature adaptability (do not crack), strong resistance to thermal expansion and contraction, and can be exposed outdoors for extended periods.
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They are easy to clean and can be disinfected.
| 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 |
Our valves are compliance with valve international standard of ASTM, ANSI, ISO, BS, DIN, GOST, JIS, KS and so on. Size DN40-DN1200, nominal pressure: 0.1Mpa~2.0Mpa, suitable temperature:-30℃ to 200℃. The products are suitable for non-corrosive and corrosive gas, fluid, semi-fluid, solid, powder and other medium in HVAC, fire control, water conservancy project, water supply and drainage in urban, electric powder, petroleum, chemical industry, and so on.
Price Advantage: Our price is competitive because we process valve parts by ourselves.
We think “Customer satisfaction is our ultimate goal.” Depending on our advanced technology, complete quality control and good reputation, we will offer more high-quality valve products.
SS CF8 Replaceable Seat Butterfly Valve
DI Replaceable Seat Butterfly Valve
Ductile Iron Vulcanized Seat Butterfly Valve
Frequently Asked Questions (FAQ)
Why choose stainless steel butterfly valves over ductile iron?
Stainless steel butterfly valves provide superior natural corrosion resistance without requiring surface treatments. They will not peel or rust, deliver lower total lifespan costs, withstand extreme temperatures, and ensure zero contamination to sensitive media.
What industries are suitable for these valves?
They are ideal for HVAC, fire protection, municipal water supply and drainage, water conservancy, petroleum, chemical processing, electric power, food processing, and pharmaceuticals.
What size ranges and pressure ratings are available?
We supply valve sizes ranging from DN40 up to DN4000, with nominal pressure ratings including PN6, PN10, PN16, PN25, Class 150 (150LB), and JIS 5K/10K/16K.
Which international standards do your valves comply with?
Our butterfly valves comply with major international engineering standards, including ASTM, ANSI, ISO, BS, DIN, GOST, JIS, and KS.
What actuation options are supported?
The valves can be operated manually or automatically via hand levers, gearboxes, pneumatic actuators, or electric actuators adhering to the ISO 5211 upper flange standard.
What is the operating temperature range?
Depending on the specific seat and body material configuration, our valves operate smoothly within temperatures ranging from -30℃ to 200℃.
