1. Design and manufacture according to: API6D, API594, ASME B16.34
2. Connection flange dimension according to ANSI B16.5, ANSI B16.47;
3. Test and inspection according to: API 598.
4. Structure features: Double-plate wafer check valve
5. Material conform to : ANSI/ASTM
6. Main Material: WCB, CF8M, CF3M, CN7M, CW12MW, CW6MC, CY40, CR20, etc.
The double plate wafer check valve is built for reliable backflow prevention in industrial fluid systems. Made from WCB cast steel, it delivers high strength and durability in water, oil, and gas applications. Its wafer-style design installs between flanges—saving space and reducing weight. The spring-loaded dual-disc mechanism ensures fast closure to minimize water hammer and protect downstream equipment. Rated at 150LB and tested per API 598, every valve meets API 594, ASME B16.34 standards. Whether for refineries, power plants, or municipal pipelines, this double plate wafer check valve combines compactness, performance, and long service life. Trust SFANVALVE for valves engineered to last.
| Brand | SFAN VALVE OR "OEM" |
|---|---|
| Flow bore | Standard bore |
| Material | Carbon steel, Stainless steel, Alloy steel or other |
| Dimension | DN50(2") to DN1200(48") |
| Class | 150~2500 |
| Medium | Water, oil &gas. |
| Temperature | -196℃(cryogenic design) to 700℃ |
| Valve test | 100% quantity tested before delivery |
| Valve guarantee | 18 months after shipments and 12 months after installed |
| Packing | Plywood or carton cases |
| Delivery time | 7 days to 30 days |
| Place of Origin | Zhejiang, China |
Your questions answered
For Sfanvalve’s standard products, we are willing to start production without any payment in advance. We accept product inspection upon completion, and payment is only due once the inspection is passed. SFAN will then arrange shipment to your designated warehouse as per your requirements.
Yes. After receiving the contract, we will provide technical drawings. Production will commence based on these drawings once they are confirmed by both parties.
After receiving the contract and confirming the drawings, we will provide a production schedule and manufacture strictly according to it. We will provide photos or videos to share and make a record for every stage of the production process. If a serious delay occurs due to management error, we will arrange air shipment and bear all costs by air.”
The warranty period is 18 months from the date of shipment or 12 months from the date of installation, whichever occurs first.
