Butterfly Tilting Disc Check Valve

The Butterfly Tilting Disc Check Valve is one kind of non return valve of water works valves. The Butterfly Tilting Disc Check Valve allows the fluid to flow only in the desired direction. The design of butterfly check valve is such that any flow or pressure in the opposite direction is mechanically restricted from occurring.

The non return check valve is used to prevent backflow of fluid, which could damage equipment or upset the process. The butterfly Double Check Valve is especially useful in protecting a pump in liquid applications or a compressor in gas applications from backflow when the pump or compressor is shut down. The Butterfly Tilting Disc Wafer Check Valve is also applied in process systems that have varying pressures, which must be kept separate.

The butterfly resilient seat check valve is mainly used in the pipeline outlet of the water supply and drainage system, petroleum, chemical industry and other industrial sectors. Due to the slant design of the sealing ring of the rubber check valve, the closing time is short and the water hammer pressure can be reduced. The disc of this kind of non return valve is made of nitrile rubber and steel plate through high temperature (vulcanization). It is easy to be washed and sealed. The product structure is simple, maintenance, maintenance and transportation are convenient.

Standard:

Basic Design: BS5153, DIN3352

Face to Face: BS5153, DIN3202, ISO5752

Flange Ends: EN1092-2

Pressure Test: EN12266-1 Rating A

Design Feature:

Ball Check, Non-Return

Resilient Seat

Rubber NBR EPDM Capsuled Ball

Double Flange Ends

Bolted Cap

Size Range: 2" to 20" (DN50 to DN500)

Pressure Class: PN6 (0.6Mpa), PN10 (1Mpa), PN16 (1.6Mpa), PN25, Class 125, Class 150

Material:

Body: Ductile Iron GGG50, GGG40 EN-GJS 500-7

Ball: Ductile Iron, Aluminium

Seat: EPDM NBR

Coating: Fusion Bonded Epoxy, RAL5005, RAL5015, Min. Thickness 300Micron

Optional:

WRAS Approved Fusion Bonded Epoxy, Resicoat R4

WRAS Approved EPDM, NBR

Thanks for your selection of RSF’s non return valve like Butterfly Tilting Disc Check Valve! If you have any inquiries of our ductile iron wafer check valve or other type of water works valves , please don’t hesitate to contact with us!