DRVZ silent check valve

intro

The DRVZ silent check valve is composed of body, seat, guide body, disc, bearing shell and spring. The internal flow path adopts streamlined design, the pressure loss is minimal, the valve flap opening and closing stroke is very short, the pump stop opening and closing stroke is very short, and the pump can be quickly closed to prevent the huge water hammer sound, forming a mute effect.
The valve is mainly used for water supply, drainage, fire fighting, HVAC system, can be installed at the pump outlet, to prevent the media backflow and water hammer damage to the pump.

Main technical parameters

Model number	DRVZ/T-10	DRVZ/T-16	DRVZ/T-25Q
Nominal pressure	PN1.0 MPa	PN1.5 MPa	PN2.5 MPa
Nominal diameter	DN50 to DN300(mm)
Maximum working pressure	1.0 MPa	1.6 MPa	2.5 MPa
Seal test pressure	1.1 MPa	1.76 MPa	2.75 MPa
Shell test press	1.5 MPa	2.4 MPa	3.75 MPa

Main parts

Part name	Materials
Body, deflector	Gray cast iron, ductile cast iron, cast steel
Seat, bearing bush, disc, shaft	Bronze or chrome stainless steel
Spring	Stainless steel

Main connection size

Nominal diameter (mm)	L(mm)
50	120
65	150
80	180
100	240
125	300
150	350
200	450
250	500
300	550
350	575
400	600
450	650
500	seven hundred

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