Product Description

The stainless steel vertical check valve is normally closed. Due to the pressure of the medium at the inlet end of the pipeline, the valve is opened by overcoming the resistance of the spring. When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat to close the valve, preventing the medium from flowing back, so it acts as a check. The valve can be installed vertically or horizontally due to the spring-supported valve core.

Product Features

1. The sealing pair of the stainless steel vertical check valve is advanced and reasonable. The sealing surface of the valve disc and valve seat is made of iron-based alloy or Stellite cobalt-based hard alloy surfacing surface, which is wear-resistant, high-temperature resistant and corrosion-resistant. , Good scratch resistance and long service life.2. The stainless steel vertical check valve is designed and manufactured according to the standard, and can adopt various piping flange standards and flange sealing types to meet various engineering needs and user requirements. The valve body has a complete variety of materials, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions.

Material of main parts

Part Name	Body, disc	Pilot valve	Sealing surface
H42W-16C	Carbon steel	Carbon steel	Carbon steel
H42W-16P	Chrome-nickel-titanium stainless steel	chrome-nickel-titanium stainless steel	Chrome-nickel-titanium stainless steel
H42W-25P
H42W-40P
H42W-25R	Chrome-nickel-titanium stainless steel	chrome-nickel-titanium stainless steel	Chrome-nickel-titanium stainless steel
H42W-40R
H42Y-40	Carbon steel	Carbon steel	Hardfacing carbide

Main performance parameters

Model	PN(MPa)	Test pressureP3(MPa)		Proper temperature(℃)	Applicable media
		Case	Seal
H42W-16C	1.6	2.4	1.76	≤425	Water, oil
H42W-16P				≤200	Weak corrosive medium
H42W-25P	2.5	3.75	2.75
H42W-25R					Corrosive media
H42W-40P	4.0	6.0	4.4		Weak corrosive medium
H42W-40R					Corrosive media
H42Y-40					Water, oil

Main external connection dimensions and weight（1.6MPa）

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200
L	mm	105	105	105	150	160	170	180	200	210	275	300	380
D	mm	95	105	115	135	145	160	180	195	215	245	280	335
WT	kg	-	-	-	-	-	7.9	11	12	19.5	36	47	65

Main external connection dimensions and weight（2.5MPa）

Size	DN	20	25	32	40	50	65	80	100	125	150	200
L	mm	105	105	150	160	170	180	200	210	275	300	380
D	mm	105	115	135	145	160	180	195	230	275	300	360
WT	kg	-	-	-	-	7.9	11	12	20	38	48	70

Main external connection dimensions and weight（4.0MPa）

Size	DN	50	65	80	100	125	150	200
L	mm	170	180	200	210	275	300	380
D	mm	160	180	195	230	270	300	375
WT	kg	7.9	11	12	20	38	48	72