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Wafer Butterfly Check Valve Descriptions
Wafer butterfly check valve is one type of dual plate check valve with two torsion springs added to each of pair valve plates, which closes the plates quickly and automatically, preventing the mediums from flowing back. Wafer butterfly check valve can be mounted between the two pipes in both horizontal and vertical directions. Wafe butterfly check valve is tightly sealed without leakage during the hydraulic pressure test. Flowspec Luokai can manufacture the wafer butterfly check valve with the face to face dimensions according to ANSI B16.10, with flanged dimensions of EN588-1, EN1092 PN10/PN16.
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1. FEATURES
- Small in size, light weight, compact structure, easy maintenance
- The quick action prevents of medium back flow
- Short face to face and good rigidity
- Easy installation, can be mounted horizontally and vertically
- This valve is tightly sealed, without leakage
- Safe and reliable operation, high interference-resistance
- Interior and exterior fusion bonded powder epoxy resin with minimum dry film thickness of 250 microns
3. STANDARDS
- Design & manufacturing: API594
- Face to face: EN558-1, ANSI B16.10
- Matching flanges: ANSI B16.1 125LB/150LB, EN1092 PN10/PN16
- Inspection & testing: API598
2. TECHNICAL SPECIFICATIONS
- 125LB / 150LB / 150PSI / 200PSI
- Size: 2”~30” (DN50~750mm)
- Materials: cast iron A126 B (GG25), ductile iron A536 65-45-12 (GGG50), DIN1691, DIN1693, BS EN1561, BS EN1563
- Applicable medium: water, sewage, sea water, air, steam, oils, food, corrosive liquids
- Applicable temperature: -15℃~+150℃ (higher temperature is available upon request)
4. APPLICATIONS
- Water works, water projects
- Environment protection
- Public facilities
- Building industry, real estate
- Petroleum, chemical industry
- Steel work, metallurgy
- Food & beverage
Why Choose Flowspec Luokai
45+ Years Experience
Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.
Global Certifications
ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.
OEM Custom Solutions
Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.
Worldwide Delivery
Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.
Our Service Promise
Strict Quality Control
Every valve tested to API 598, EN 12266 before shipment
Timely Global Delivery
Reliable logistics to 5 continents with secure packaging
OEM & Custom Design
Tailored material, size, pressure and actuation to your specs
Dedicated After-Sales
Technical support and service throughout product lifecycle