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Home > Products > Check valve > Vertical steel stop return valveH42H PN16~PN40 vertical steel stop valve

Description Material Performance Product Size Specifications

Check valve refers to the flow of the media itself and automatic open, closed disc, used to prevent media backflow of the valve, also known as check valve, one-way valve, reverse flow valve, or back pressure valve. Type H42H vertical check valve check valve belongs to an automatic valve, its main role is to prevent medium backflow, prevent pump and drive motor reversal, as well as the discharge of container medium.
Check valves can be divided into swing check valve (rotating according to the center of gravity) and lift check valve (moving along the axis). By choosing different structure and material, it can be widely used in water, steam, oil, acid, alkali and other media.
Flange elevating check valve (H41 horizontal, H42 vertical) sealing pair matching advanced reasonable, disc, seat sealing surface using iron base alloy, or Stellite cobalt-based hard alloy surfacing welding, can also cover the valve plate with rubber. Type H41 is suitable for horizontal pipe installation and type H42 is suitable for vertical pipe installation. Wear resistance, high temperature resistance, corrosion resistance, abrasion resistance, long service life.
Scope of use: the product can be used in petroleum, chemical and other industries.
Products conform to the standard: GB/T 12235

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Main performance parameters

model	Nominal pressure PN	Applicable temperature /°C	Applicable medium
H42H16C	16	≤425	Water, steam, oil
H42H-25	25	≤425	Water, steam, oil
H42H-40	40	≤425	Water, steam, oil

Main overall dimensions

（unit：mm）

model	size	Nominal size
model	size	15	20	25	32	40	50
H42X-16C	L	80	90	100	110	120	140
	D	95	105	115	135	145	160
	D₁	65	75	85	100	110	125
	D₂	45	55	65	78	85	100
H42H-25	L	80	90	100	110	120	140
	D	95	105	115	135	145	160
	D₁	65	75	85	100	110	125
	D₂	45	55	65	78	85	100
H42H-40	L	80	90	100	110	120	140
	D	95	105	115	135	145	160
	D₁	65	75	85	100	110	125
	D₂	45	55	65	78	85	100

model	size	Nominal size
model	size	65	80	100	125	150	200
H42X-16C	L	160	185	210	275	300	380
	D	180	195	230	270	300	360
	D₁	145	160	190	220	250	310
	D₂	120	135	160	188	218	278
H42H-25	L	160	185	210	275	300	380
	D	180	195	230	270	300	360
	D₁	145	160	190	220	250	310
	D₂	120	135	160	188	218	278
H42H-40	L	160	185	210	275	300	380
	D	180	195	230	270	300	375
	D₁	145	160	190	220	250	320
	D₂	120	135	160	188	218	282

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