ASTM A351 CF8M Butterfly Valve is a high-performance flow control valve constructed from CF8M stainless steel (equivalent to 316 stainless steel), widely used in corrosive, high-humidity, or chemical environments. It excels in durability and corrosion resistance, making it ideal for water treatment, petrochemical, food & beverage, and other demanding applications.
Detailed Information of ASTM A351 CF8M Butterfly Valve
| Item | Specification |
|---|---|
| Material Standard | ASTM A351 CF8M (valve body), equivalent to AISI 316 stainless steel |
| Nominal Diameter | DN100 ~ DN1200 (4" ~ 48") |
| Pressure Rating | PN16 / Class 150 |
| Connection Type | Wafer, Lug (double flanged) |
| Actuation Method | Manual, Electric, Pneumatic (optional) |
| Seal Type | Soft seal (Rubber, EPDM, NBR, PTFE) |
| Operating Temperature | -40°C ~ 120°C (varies by seal material) |
| Applicable Media | Water, air, oil, weak acids/alkalis, steam, and other corrosive fluids |
| Testing Standards | Shell test: 24 bar; Seal test: 17.6 bar (for DN100 as example) |
| Origin & Brand | Manufactured in Tianjin, China; OEM or Davan brand, exported globally |
Component Structure Table of ASTM A351 CF8M Butterfly Valve
| Component | Material | Notes |
|---|---|---|
| Body | ASTM A351 CF8M Stainless Steel | High corrosion resistance for harsh environments |
| Disc | ASTM A351 CF8M / Ductile Iron / Carbon Steel | Optional coatings (nickel plating, epoxy) for enhanced corrosion protection |
| Stem | ASTM A182 304 / 316 / 410 Stainless Steel | Prevents crevice corrosion, ensures smooth rotation |
| Seat | EPDM / NBR / PTFE (Elastomer) | Maintains sealing performance within -45°C ~ 135°C |
| Bushing | PTFE / Bronze | Reduces friction, extends service life |
| Packing | EPDM / Graphite | Prevents external leakage under varying temperature conditions |
| Actuator | Aluminum Alloy or Stainless Steel Housing | Enables remote control and automatic regulation |
Key Features of ASTM A351 CF8M Butterfly Valve
- Superior Material: The valve body is cast from ASTM A351 CF8M stainless steel, equivalent to AISI 316, offering excellent resistance to chloride stress corrosion and acid/alkali corrosion
- Pressure Rating: Typically available in PN16 (1.6 MPa) or Class 150, suitable for low to medium-pressure systems
- Reliable Sealing: Equipped with resilient seals (e.g., EPDM, NBR, PTFE), ensuring bidirectional zero leakage with a wide operating temperature range (-40°C ~ 135°C)
- Compact Design: Lightweight and space-saving, ideal for tight piping layouts
- Flexible Operation: Compatible with manual, electric, or pneumatic actuators for easy integration into automated systems
- Complies with International Standards: Meets API 609, BS EN 593, DIN 3354, ensuring interchangeability and safety
GNEE ASTM A351 CF8M Butterfly Valve Factory
FAQ
What is ASTM A351 grade CF8M material
ASTM A351 Grade CF8M is an austenitic stainless steel casting material widely used in the manufacture of corrosion-resistant valves, pump bodies, and other pressure-bearing components. It is equivalent to a cast version of AISI 316 stainless steel, exhibiting excellent resistance to chloride stress corrosion cracking and acid/alkali resistance.
What is the equivalent of ASTM A351 grade CF8M
The equivalent material of ASTM A351 Grade CF8M is a cast version of AISI 316 stainless steel, meaning it closely corresponds to 316 stainless steel in chemical composition and properties.
Common equivalent grades include:
Forging standard: ASTM A182 F316
International standards: EN 1.4408, ISO X5CrNiMo17-12-2, JIS SCS14
Chinese grades: ZG07Cr19Ni11Mo2 or 0Cr17Ni12Mo2Ti
What does Cf8m mean on a valve
CF8M is the marking code of valve material, which means that the valve body is made of stainless steel castings under the ASTM A351 standard, corresponding to 316 stainless steel (SS316), which is mainly used in industrial scenarios with high corrosion resistance requirements. Its core meaning includes the dual definition of material properties and process standards:
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