H74X,H74H Clamp disc check valveDetailed product description：

H74X and H74H check valves are ultra-thin check valves that have the advantages of simple structure, beautiful appearance, light weight, and easy installation. H74X and H74H check valves are mainly suitable for industrial sectors such as water supply systems, petroleum, chemical, and metallurgical industries, and are most suitable for places with installation space limitations.

Main technical parameters of H74H wafer type check valve:

Model	Nominal Diameter	Test pressure		Applicable temperature		Applicable Medium
		housing	seal	hard seal	soft seal
H74H（X）-10	one	one point five	one point one	≤400℃	≤ 120 ℃, maximum ≤ 250 ℃	Liquids such as oil, water, iodine acid, etc
H74H（X）-16	one point six	two point four	one point seven six
H74H（X）-25	two point five	three point seven five	two point seven five
H74H（X）-40	four	six	four point four

H74H wafer type check valve main component materials:

Part Name	Valve body and disc	Seal ring
Material	Carbon steel, stainless steel, copper	Nitrile rubber, ternary propylene rubber, polytetrafluoroethylene, stainless steel

Main external dimensions of H74H wafer type check valve:

Nominal Diameter	D	L		D
		Type I	Type II	PN1.0	PN1.6	PN2.5	PN4.0
fifty	twenty-five	fifteen	twenty-two	one hundred and nine	one hundred and nine	one hundred and nine	one hundred and nine
sixty-five	thirty-eight	fifteen	twenty-two	one hundred and twenty-nine	one hundred and twenty-nine	one hundred and twenty-nine	one hundred and twenty-nine
eighty	forty-six	fifteen	twenty-two	one hundred and forty-four	one hundred and forty-four	one hundred and forty-four	one hundred and forty-four
one hundred	seventy-two	fifteen	twenty-four	one hundred and sixty-four	one hundred and sixty-four	one hundred and seventy	one hundred and seventy
one hundred and twenty-five	ninety-five	sixteen	twenty-six	one hundred and ninety-four	one hundred and ninety-four	one hundred and eighty-six	one hundred and eighty-six
one hundred and fifty	one hundred and fourteen	nineteen	twenty-nine	two hundred and twenty-one	two hundred and twenty-one	two hundred and twenty-six	two hundred and twenty-six
two hundred	one hundred and forty	twenty-nine	forty-three	two hundred and seventy-five	two hundred and seventy-five	two hundred and eighty-three	two hundred and ninety-three
two hundred and fifty	one hundred and eighty-eight	twenty-nine	forty-three	three hundred and thirty	three hundred and thirty-one	three hundred and forty-three	three hundred and fifty-five
three hundred	two hundred and sixteen	thirty-eight	fifty	three hundred and eighty	three hundred and eighty-six	four hundred and three	four hundred and twenty
three hundred and fifty	two hundred and sixty-three	forty-one	fifty-two	four hundred and forty	four hundred and forty-six	four hundred and sixty	four hundred and seventy-seven
four hundred	three hundred and five	fifty-one	sixty-two	four hundred and ninety-one	four hundred and ninety-eight	five hundred and seventeen	five hundred and forty-nine
four hundred and fifty	three hundred and fifty-six	fifty-one	sixty-two	five hundred and forty-one	five hundred and fifty-eight	five hundred and sixty-seven	five hundred and seventy-four
five hundred	four hundred and six	sixty-five	eighty	five hundred and ninety-six	six hundred and twenty	six hundred and twenty-seven	six hundred and thirteen
six hundred	four hundred and eighty-two	seventy	ninety	six hundred and ninety-eight	seven hundred and thirty-seven	seven hundred and thirty-four	seven hundred and fifty

Note: (1) Flange connection size: According to GB/T9113.1-2000 standard. (2) Type I is used for stable flow conditions; Type II adds a spring device on top of Type I.