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Silent type check valve
Model: DRVZ (H42X)
Nominal diameter: DN50 ~ 350mm
Nominal pressure: PN1.0 ~ 2.5MPa
Suitable medium: water, oil, water, sewage
Temperature: 0 ~ 80 ℃
Flange Standard: GB / T17241.6 , GB / T 9113
Test standards: GB / T13927, API598

【DRVZ (H42X) Silent Check Valve - Product Description】

DRVZ (H42X) quiet check valve is mainly composed of the valve body, seat, diversion, Yan petals, bearings and springs and other major components, the internal flow channel streamlined design with minimal pressure loss. Valve flap opening and closing stroke can be shut down very fast to prevent the closure of a huge water hammer sound features mute. Mute check valve is mainly used for water supply and drainage, fire, HVAC system can be installed at the pump outlet to prevent backflow and water hammer damage to the pump.
 

【DRVZ (H42X) silent check valve - the main technical parameters】

model

DRVZ-10

DRVZ-16

DRVZ-25Q

Nominal pressure

PN1.0MPa

PN1.6MPa

PN2.5MPa

Nominal diameter

DN50-350mm

The maximum working pressure

1.0 MPa

1.6 MPa

2.5 MPa

Seal test pressure

1.0 MPa

1.6 MPa

2.5 MPa

Shell test pressure

1.5 MPa

2.4 MPa

3.75 MPa

The main 
part 
material

Body, fluid guide

grey cast iron

Ductile iron

Seat, bearings, disc, shaft

Aluminum bronze or Ming stainless steel

spring

stainless steel

 

[DRVZ (H42X) silent check valve - the main dimensions

(Flange size 1.0MPa press GB4216.84 standard, PNl.6MPa press GB4216.5-84 standard, PN2.5MPa press GB9113.4 88 standard)

Nominal diameter

L

50

120

65

150

80

180

100

229

125

254

150

267

200

292

250

340

300

-

350

-


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