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Products details:
Product name:DIN cast steel rubber seat flange Check Valves
Product Catalog:check valve
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Static sound type Check Valves

 

1 Product characteristic and use

Static sound type Check Valves Mainly by the valve chest, the valve seat, the conduction current body, the valve petal, the bearing and the spring and so on the major parts is composed, the internal flow channel uses the streamline form design, the pressure loss is minimum. The valve petal opens shuts the traveling schedule to be very short, stops when the pump may close fast, prevented the giant impingement sound, has the static sound closure characteristic.
This valve mainly uses in giving draining water, the fire prevention, passing the system warmly, may install in the water pump exit, prevented flows backwards and the impingement to harm

2Main technical parameter

 

type

DRVZ-10

DRVZ-16

DRVZ-25Q

Nominal pressure

PN1.0MPa

PN1.6MPa

PN2.5MPa

Nominal diameter

DN50~250mm

Maximum operating pressure

PN1.0MPa

PN1.6MPa

PN2.5MPa

Seal test pressure

PN1.0MPa

PN1.6MPa

PN2.5MPa

Shell test pressure

PN1.5MPa

PN2.4MPa

PN3.75MPa

Main  parts materials

Body diffuser insert

gray cast iron

Ductile Cast Iron

seat Bearing Disc Disc Axial

albronze or Chromium Stainless Steel

Spring

 

 Stainless Steel

3Main external dimensions (flange size PN1.0Mpa according to GB4216.4-84 standard, PN1.6MPa according to GB4216.5-84 standard, PN2.5Mpa according to GB9113.4-88 standard,)

DNmm

L

50

120

65

150

80

180

100

240

125

300

150

350

200

450

250

500

 

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