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Cast iron valves for water treatment systems

DIN type silencing check valve

The function of this valve is to prevent flow in the opposite direction while only allowing the medium to flow in one direction. Usually, valves work automatically. Under the pressure of unidirectional fluid flow, the valve disc opens; When the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc act on the valve seat, cutting off the flow. Not suitable for media containing solid particles and high viscosity.

Category:

Cast iron check valve

Consultation Hotline:

0086-512-6270-1855

technical manual

Product Message

Product characteristics

1. The short closing stroke of the valve core, combined with the closed design of spring speed, can effectively reduce the impact of water hammer.

Before the water hammer strikes, the valve has been closed to achieve a silent effect.

3. Full flow design with extremely low water loss.

4. Due to the use of a disc guide design at both ends, it can be installed in any direction.

technical specifications

Product parameters

Main technical parameters

Test pressure	PN10	Shell: 1.5MPa Sealing: 1.1MPa
	PN16	Shell: 2.4MPa Sealing: 1.76MPa
	PN25	Shell: 3.75MPa Sealing: 2.75MPa
Temperature	0℃~80℃
Connection end	Flange: EN1092-2
Surface Treatment	Epoxy powder coating, 150-500um, according to AWWA C550 standard.
Application scope	Pipelines for drinking water, water supply and drainage, sewage treatment, irrigation, air conditioning, fire protection, etc. should prevent medium backflow and eliminate water hammer noise.

Main component materials

No.	component	material
01	valve body	Ductile iron GGG50
02	valve stem	Stainless steel 304
03	spring	Stainless steel 304
04	hex nut	Stainless steel 304
05	Valve flap	Ductile iron is plated with copper or brass
06	valve seat	Ductile iron is plated with copper or brass
07	O-ring	Nitrile rubber or ethylene propylene rubber