The butterfly check valves are a compact kind of check valve. With a small face to face length and being wafer type, these dual plate check valves can be mounted directly between flanges and in accordance to many standard connections.
Series - 150 | PN10-PN25
The body is made in one piece only, in cast iron with disc in ductile iron, stainless steel or AI-Bronze and spring in stainless steel these parameters allow the dual plate check valves to be applied for several applications. The automatic mechanism of plate opening grants low water losses, and the spring avoids fluid hammer effect.
Design Features
- Small in size, light in weight, compact in structure, easy in maintenance
- Two torsion springs are used excerting on each of the pair valve plates. Which close the plates quickly and automatically
- The quick-close action prevents the medium from flowing back and eliminates water-hammer effect
- This valve is short in length, so that it is rigid and easy to mount
- It is easy to install on pipeline which is laid horizontally or vertically
- This valve is tightly sealed without leakage under the pressure water test
- Safe and reliable in operation, high interference-resistance
Product Specifications
- Size 2″-48″ DN50-DN1200
- Pressure Class "150" | PN10-PN25
- End Connection Flange
- Body Material WCB, DI, LCB, WC6, WC9, CF8, CF8M, CF3, CF3M
- Disc Material WCB, DI, LCB, CF8, CF8M, CF3, CF3M
- Seat Material NBR, EPDM
- Stem Material 2Cr13, 304, 316, 304L, 316l
- Design Standard API594, API 6D, ASME B16.34, DIN3356, JB/T8937
- Face to Face Standard API 594, API 6D, DIN3202, JB/T8937
- Test Standard API598, ISO5208, DIN3230, JB/T9092
- Temperature Range -196℃~540℃
- Actuator Options Bevel Gear, Pneumatic, Electric
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Structure Style
- Full Port, Butterfly Disc
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Connection Standard
- Flange Drilling: ASME B 16.5/ASME 16.47, DIN2543-2545, JB/T9112~24