Silent type check valve

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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

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【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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