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Description & Features

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. 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.

● 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.

Specifications

Size Range	Body Material
2"-48" DN50-DN1200	WCB, DI, LCB, WC6, WC9, CF8, CF8M, CF3, CF3M
Pressure Rating	Disc Material
Class150 PN10-PN25	WCB, DI, LCB, CF8, CF8M, CF3, CF3M
End Connection	Seat Material
Flange	NBR, EPDM
Structure Style	Stem Material
Full Port, Butterfly Disc	2Cr13, 304, 316, 304L, 316l
Actuator Options	Design Standard
Bevel Gear, Pneumatic, Electric	API594, API 6D, ASME B16.34, DIN3356, JB/T8937
Temperature Range	Face to Face Standard
-196℃~540℃	API 594, API 6D, DIN3202, JB/T8937
Connection Standard	Test Standard
Flange Drilling: ASME B 16.5/ASME 16.47, DIN2543-2545, JB/T9112~24	API598, ISO5208, DIN3230, JB/T9092

Brand	DAGO or OEM
Test	100% quantity tested before delivery
Guarantee	12 months from date of shipment or Negotiable
MOQ	1 Set
Sample	Available
Color	Customer required or manufacturer default
Packing	Plastic bag wrapped inside, seaworthy wooden case outside
Certificate	API6D, CE, TUV, ISO9001, ISO14001, ISO45001, Mill Test Certificate
Country of Origin	Zhejiang, China
HS Code	848180 (universal), 8481804090 (China)
Port	Shanghai or Ningbo
Payment Terms	T/T, L/C, Western Union

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