WCB Wafer Check Valve

0bar-18bar (0mpa-1.8mpa)

Product Advantages

icon Coating: Advanced epoxy electrostatic coating (sandblasting + high-adhesion) guarantees 10-year integrity, boosting corrosion resistance by 30%+ vs. standard carbon steel

icon Pressure-Resistant Design: Thickened body meets global standards, precision-cast flow channels cut 15% resistance

icon Zero-Leakage Assurance: Full-range pressure sealing tests (covering both gas and liquid sealing detection) ensure zero leakage, even under static pressure

Standards and Certifications

Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129: JISB2220

Side Flange Standards: ANSI 125LB/ 150LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16/ PN25; GB; GOST; HG/T; JIS 5K/ 10K/ 16K

Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609

Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1

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
Coating	Epoxy Resin 200um ~250um

Industries Served

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%.

Our Certifications

Our Machining Equipments

WCB Wafer Check Valve

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JIS Dual Plate Wafer Check Valve Drawing

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ASME/API Standard Extended Body Double Door Wafer Check Valve Drawing

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GB Standard Butterfly Check Valve Drawing

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Wafer Check Valve Dimensions

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WCB Wafer Check Valve Technical FAQ

Can your butterfly check valve operate normally at -40℃? Will the disc freeze and stick?

Absolutely. We manufacture valves from specialized low-temperature carbon steel (LCB/LCC) or stainless steel (304L/316L) that retain excellent impact toughness at -40℃. Our design explicitly accounts for low-temperature effects to ensure the disc moves smoothly and freely, preventing any risk of freezing or sticking.

While a thick valve body ensures strength, won’t it be too cumbersome for installation?

Our thick-walled design guarantees structural integrity while meeting engineering standards. However, the inherent wafer-style structure of butterfly check valves is compact. Even with a robust body, the overall weight remains manageable. We provide precise weight specifications in advance to help you plan a smooth and easy installation.

Your valves have an elegant appearance and clear cast markings. What practical benefits does this offer?

Beyond aesthetics, the clear, crisp markings are crucial for safety and efficiency. They allow for easy on-site identification of material grade, pressure rating, and model specs, preventing misapplication. This simplifies installation, ensures proper handling, and streamlines future maintenance management.

Does "zero leakage under static pressure" refer to factory testing, and what standards are met?

Yes, it refers to our factory testing. Every JRVAL check valve undergoes rigorous pressure testing according to international standards (e.g., API 598 or GB/T 13927) before shipment. We guarantee the seat seal meets the standard's requirements for zero visible leakage when tested with liquid media at specified pressures.

How does the valve perform regarding pressure drop? Will it affect system flow rate?

Butterfly check valves offer superior flow characteristics compared to other designs like lift-check valves. When fully open, the streamlined flow path results in a very low pressure drop. We further optimize the internal flow passage to minimize any impact on your system's overall flow rate, ensuring high efficiency.

OUR SERVICE & GUARANTEE

Free Samples

Compare our quality against any brand. We're confident you'll choose JRVAL after an in-depth evaluation of our sample products.

2-30 Year Warranty

We stand by our craftsmanship. Enjoy a comprehensive warranty covering non-human damage, with spare parts readily available.

Verified Quality

Every shipment is backed by comprehensive documentation, including material test reports (MTR), heat treatment reports, and mechanical performance tests.

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