Flange Type Double Offset Butterfly Valve

AWWA C504 butterfly valve has two forms, midline line soft seal and double eccentric soft seal, usually, the price of midline soft seal will be cheaper than the double eccentric, of course, this is generally done according to the requirements of customers. Usually the working pressure for AWWA C504 are 125psi, 150psi, 250psi, flange connection pressure rate are CL125,CL150,CL250.

Size: 2”-88”/DN50-DN2200

Pressure Rating: PN10/16, JIS5K/10K, 150LB

Warranty: 18 Month

Brand Name: ZFA Valve

Service: OEM

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Product Detail

Size & Pressure Rating & Standard
Size	DN40-DN2200
Pressure Rating	PN10, PN16, CL150, JIS 5K, JIS 10K
Face to Face STD	API609, BS5155, DIN3202, ISO5752
Connection STD	PN6, PN10, PN16, PN25, 150LB, JIS5K, 10K, 16K, GOST33259
Upper Flange STD	ISO 5211

Material
Body	Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L)
Disc	DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L)
Stem/Shaft	SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
Seat	NBR, EPDM/REPDM, Viton, Silicon
Bushing	PTFE, Bronze
O Ring	NBR, EPDM, FKM
Actuator	Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator

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Product Advantage

Double offset butterfly valve has two offsets.

1st is the axis of the shaft deviate from the center of the disc;
2nd is the axis of the shaft deviate from the pipeline center.

The suitable application for double offset butterfly valve is: working pressure under 4MPa, working temperature under 180℃ as it has a rubber sealing surface.