Coating: Advanced epoxy electrostatic coating (sandblasting + high-adhesion) guarantees 10-year integrity, boosting corrosion resistance by 30%+ vs. standard carbon steel
Pressure-Resistant Design: Thickened body meets global standards, precision-cast flow channels cut 15% resistance
Zero-Leakage Assurance: Full-range pressure sealing tests (covering both gas and liquid sealing detection) ensure zero leakage, even under static pressure
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129: JISB2220
Side Flange Standards: ANSI 125LB/150LB; ASME; AS-D/E; BSPN10/16; DIN PN10/16; EN-1092 PN6/10/16/25; GB PN6/10/16; GOST 33259; HG/T PN6/10/16/25; JIS 5K/10K/16K
Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 588-1
Testing Standards: API 598; EN 12266-1; ISO 5208
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
| Type of Connection | Wafer |
| Size |
DN32~DN1200 (1 1/4~48in) |
| Pressure |
0bar~18bar (0mpa~1.8mpa) |
| Testing Pressure | 256psi |
| Medium | Water/Oil/Air |
| Medium Temperature | -25~180℃ |
Material of the Valve |
|
|---|---|
| Body | WCB/ WCC/ LCB/ LCC/ LC1 |
| Disc | DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
| Stem | 45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
| Seat | EPDM/ NBR/ SI/ FKM/ FPM/ VITON/ PTFE |
| Coating | Epoxy Resin 200um ~250um |
The following are the representative application industries of this valve. Since butterfly valves can be applied to almost all industries (as long as the temperature and pressure are in line), many industries have not been listed.
Our dual plate wafer check valve is engineered to prevent backflow of critical media, safeguarding upstream equipment such as pumps, compressors, separators, and flare systems. It ensures system integrity throughout oil and gas extraction, gathering, transportation, storage, and primary processing operations, preventing damaging reflux of oil, gas, and water.
Engineered for power plants, the double disc wafer check valve delivers reliable sealing in high-temperature media with reverse leakage rates below 0.05%, meeting stringent operational requirements.
Engineered for superior robustness and durability through heavy-duty cast construction, our double door wafer check valve provides strong resistance to vibration and impact. It boasts an impressive Mean Time Between Failures (MTBF) exceeding 8,000 hours, promising extended and reliable operational life in demanding industrial environments.
The dual disc wafer check valve accommodates large diameters, including DN1000 and above, making it optimized for high-volume municipal water applications (non-potable and non-sewerage).
The double wafer check valve can be customized with wear-resistant components. The valve disc and seat can be made of high-hardness carbon steel or alloy steel, improving wear resistance by 25%.
Q: Can your butterfly check valve operate normally at -40℃? Will the disc freeze and stick? |
A: Absolutely. JRVAL offers butterfly check valves manufactured from low-temperature carbon steel (e.g., LCB/LCC) or low-temperature stainless steel (e.g., 304L/316L). These materials maintain excellent impact toughness and mechanical properties even at -40℃ or lower temperatures. The valve design also accounts for low-temperature effects to ensure smooth, unrestricted disc movement and prevent sticking. |
Q: While a thick valve body ensures strength, won’t it be too cumbersome and make installation more difficult? |
A: The thick-walled design guarantees structural strength and durability while complying with relevant engineering standards. Butterfly check valves have a relatively compact structure, so even with a robust body, the overall weight remains within reasonable limits. We will provide precise weight specifications to assist with installation planning. |
Q: Your valves have an elegant appearance and clear cast markings. What practical benefits does this offer? |
A: The refined aesthetics and crisp cast markings not only enhance product quality perception but more importantly facilitate on-site identification, installation, and post-installation maintenance management. Clear indications of material grade, pressure rating, and model specifications help prevent misapplication and ensure proper handling. |
Q: Does “zero leakage under static pressure” refer to factory testing? What seal integrity standards are achieved? |
A: Yes, all JRVAL check valves undergo rigorous seal performance testing per industry standards (typically API 598, GB/T 13927) prior to shipment. Under specified test pressures, the seat seal is guaranteed to meet standard requirements for zero visible leakage when tested with liquid media. |
Q: How does the butterfly check valve perform in terms of pressure drop? Will it affect our system’s flow rate? |
A: Compared to certain other check valve designs (like lift-check valves), butterfly check valves offer superior flow characteristics. When fully open, the streamlined flow path ensures minimal pressure drop. We optimize internal flow passage designs to minimize any potential impact on system flow rates. |
The following are the representative application industries of this valve. Since butterfly valves can be applied to almost
all industries (as long as the temperature and pressure are in line), many industries have not been listed.
Oil & Gas Industry
Our dual plate wafer check valve is engineered to prevent backflow of critical media, safeguarding upstream equipment such as pumps, compressors, separators, and flare systems. It ensures system integrity throughout oil and gas extraction, gathering, transportation, storage, and primary processing operations, preventing damaging reflux of oil, gas, and water.
Power Generation Industry
Engineered for power plants, the double disc wafer check valve delivers reliable sealing in high-temperature media with reverse leakage rates below 0.05%, meeting stringent operational requirements.
General Industry & Manufacturing
Engineered for superior robustness and durability through heavy-duty cast construction, our double door wafer check valve provides strong resistance to vibration and impact. It boasts an impressive Mean Time Between Failures (MTBF) exceeding 8,000 hours, promising extended and reliable operational life in demanding industrial environments.
Water Treatment (Non-Potable) & Municipal (Non-Sewerage)
The dual disc wafer check valve accommodates large diameters, including DN1000 and above, making it optimized for high-volume municipal water applications (non-potable and non-sewerage).
Food & Beverage Industry
The double wafer check valve can be customized with wear-resistant components. The valve disc and seat can be made of high-hardness carbon steel or alloy steel, improving wear resistance by 25%.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
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