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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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DRVZ (H42X) Silent Check Valve

DRVZ (H42X) Silent Check Valve Structure
DRVZ (H42X) Silent Check Valve Structure

Structural features

DRVZ (H42X) mute check valve uses a streamlined internal flow path, with minimal pressure loss, a very short opening and closing stroke of the valve flap, which can be quickly closed when the pump is stopped, preventing huge water hammer sounds, and has the feature of silent closing. The mute check valve is composed of main parts such as a valve body, a valve seat, a fluid guide, a valve disc, a bearing and a spring. DRVZ silent check valve is mainly used in water supply, drainage, fire protection, and HVAC systems. It can be installed at the outlet of the pump to prevent backflow and water hammer damage to the pump, which effectively protects the normal operation of the pump.

Performance parameter

model DRVZ-10 DRVZ-16 DRVZ-25Q
Nominal pressure PN (MPa) 1.0 1.6 2.5
Nominal diameter DN (mm) 50 ~ 350
Working pressure (MPa) 1.0 1.6 2.5
Sealing test pressure (MPa) 1.0 1.6 2.5
Shell test pressure (MPa) 1.5 2.4 3.75
Parts material Valve body and fluid Grey cast iron
Seat, bearing, disc, shaft Aluminum bronze or stainless steel
spring stainless steel

Dimension table (flange size 1.0MPa according to GB4216.84 standard, PNl.6MPa according to GB4216.5-84 standard, PN2.5MPa according to GB9113.4 88 standard)

Nominal diameter DN product code L D D1 DN number of holes
PN10 PN16 PN25 PN10 PN16 PN25 PN10 PN16 PN25 PN10 PN16 PN25
50 DRVZ-0050 120 165 165 165 125 125 125 18 18 18 4 4 4
65 DRVZ-0065 150 185 185 185 145 145 145 18 18 18 4 4 8
80 DRVZ-0080 180 200 200 200 165 160 160 18 18 18 8 8 8
100 DRVZ-0100 240 220 220 235 180 180 190 18 18 25 8 8 8
125 DRVZ-0125 300 250 250 270 210 210 220 18 18 25 8 8 8
150 DRVZ-0150 350 285 285 300 240 240 250 twenty three twenty three 25 8 8 8
200 DRVZ-0200 450 340 340 360 295 295 310 twenty three twenty three 25 8 12 12
250 DRVZ-0250 500 395 405 425 355 355 370 twenty three twenty three 30 12 12 12