【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 |
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 |
- |
