Product introduction
Model: h42t / DRVZ caliber (DN): 50 ~ 500 (mm) pressure (PN): 1.0 ~ 2.5 (MPA) product price: telephone discussion date: 13-07-03 brand: Shanghai Europe

H42T/DRVZType V silent check valve is composed of valve body, valve seat, guide body, valve disc, bearing bush and spring. The internal flow passage adopts streamline design, the pressure loss is very small, the opening and closing stroke of valve disc is very short, and the opening and closing stroke of pump stop is very short. When the pump is stopped, it can be closed quickly to prevent huge water hammer sound and form silent effect. It is mainly used for water supply, drainage, fire protection and HVAC systems. It can be installed at the outlet of water pump to prevent the damage of medium backflow and water hammer to the pump.

H42T/DRVZMain technical parameters of silent check valve
model	DRVZ/T-10	DRVZ/T-16	DRVZ/T-25Q
Nominal pressure	PN1.0MPa	PN1.5MPa	PN2.5MPa
Nominal diameter	DN50～DN300(mm)
Maximum working pressure	1.0MPa	1.6MPa	2.5MPa
Sealing test pressure	1.1MPa	1.76MPa	2.75MPa
Shell test pressure	1.5MPa	2.4MPa	3.75MPa

H42T/DRVZMain parts of silent check valve
Part name	Material Science
Valve body, guide body	Gray cast iron, ductile iron, cast steel
Valve seat, bearing bush, valve disc and shaft	Bronze or chrome stainless steel
Spring	stainless steel

 

H42T/DRVZMain connection dimensions of silent check valve
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	700

Check valve installation should pay attention to the following matters
1. In the pipeline, do not make the check valve bear the weight, large check valve should be independently supported, so that it is not affected by the pressure produced by the pipeline system.  
2. During installation, the direction of medium flow should be consistent with the arrow direction of valve body.  
3. Lift type vertical disc check valve shall be installed in vertical pipeline.  
4. Lift type horizontal disc check valve shall be installed on horizontal pipeline.