Silence check valve , coating with epoxy

Slience Check  Valve:

Main structure  and  their materials :

Bady /lineG  Material:QT500-7,GGG50 with internal and external epoxy resin coating

Disc  Material:GGG50 or Casting Steel

Guiding Stem、Spring:1Cr17Ni2、1Cr18Ni9Ti,Stainless Steel

Guiding bushing:ZCuAl10Fe3 Bronze ZCuAl10Fe3

Flange washer      Material:NBR,EPDM,FPM

Technical data:

Design standard: GB21387

Flange standard: EN1092-2/GB17241.6

Face to face dim：EN5752 serie10/GB12221

Testing standard: EN1074-2/EN12266-1/GB13927

Body: GGG50/GJS500-7

Sealing: Rubber

DN: 50~300

PN:1.6Mpa

Working temp.: NBR ≤80℃/EPDM≤120℃

Drive Mode: Damper

Connecting:Flange

Coating: Epoxy

Silence check valve

Features:

Space of the valve cavity employs streamlined design,overcoming turbulent flow of the media. the spherial  structure at the front part of the discs and bevelled sealed surface reduce impacts on medias and also the flow-resistant coefficient.The inner guide vane adoptes a style of thin eggshell so as to ensure the flow of the media unblocked.At the same time,the weight of the valve reduces as well. A largest flowing sectional area is created by reasonably lifting the height and enlarging the inner space,which also effectively avoid the produce of an air-chamber,upgrade the  valve’s Cv value and overcome noise.

Application：

The two kinds of valves are widely used in heating systems and industrial water supply and drainage systems