HH44X Micro resistance slow closing check valveDetailed product description：

The HH44X check valve consists of a valve body, valve cover, valve disc, valve shaft, and regulating valve. It is installed at the outlet of the water pump to prevent medium backflow and eliminate destructive water hammer. It can effectively reduce the water hammer pressure when the valve is closed, ensuring the safe operation of the pipeline network. HH44X check valve has the characteristics of light valve disc, large opening, significant energy-saving effect, low fluid resistance, novel design of water hammer elimination mechanism, stable and reliable sealing performance, wear resistance, long service life, smooth operation, no vibration, no noise, etc.

Main component materials of HH44X micro resistance slow closing check valve:

Part Name	valve body	valve disc	Valve stem, oil cylinder, piston, spring	valve seat
Material	Cast iron, cast steel	Carbon steel	stainless steel	Nitrile rubber

Main technical parameters of HH44X micro resistance slow closing check valve:

Model	Nominal Pressure	Test pressure		Applicable temperature	Applicable Medium	Slow closing time
		housing	seal
HH46X HDH48X HH49X	one	one point five	one point one	≤80℃	Clear water, sewage, seawater	≤ 60 seconds
	one point six	two point four	one point seven six
	two point five	three point seven five	two point seven five

Main external dimensions of HH44X micro resistance slow closing check valve:

Nominal Diameter	Size			Nominal Diameter	Size
	L	H	H1		L	H	H1
forty	one hundred and forty	two hundred	eighty-eight	three hundred and fifty	two hundred and ninety	four hundred and eighty	two hundred and ninety-seven
fifty	one hundred and fifty	two hundred and fifteen	ninety-eight	four hundred	three hundred and ten	five hundred and fifty	three hundred and twenty-four
sixty-five	one hundred and seventy	two hundred and twenty-five	one hundred and eight	four hundred and fifty	three hundred and thirty	five hundred and eighty-five	three hundred and fifty-one
eighty	one hundred and eighty	two hundred and thirty-five	one hundred and eighteen	five hundred	three hundred and fifty	six hundred and forty	three hundred and seventy-nine
one hundred	one hundred and ninety	two hundred and eighty	one hundred and thirty	six hundred	three hundred and ninety	seven hundred and twenty	four hundred and thirty-four
one hundred and twenty-five	two hundred	two hundred and ninety	one hundred and forty-eight	seven hundred	four hundred and thirty	seven hundred and eighty	four hundred and ninety-one
one hundred and fifty	two hundred and ten	three hundred and ten	one hundred and seventy-two	eight hundred	four hundred and seventy	eight hundred and forty	five hundred and forty-nine
two hundred	two hundred and thirty	three hundred and fifty	two hundred and ten	nine hundred	five hundred and ten	nine hundred and ninety	six hundred
two hundred and fifty	two hundred and fifty	four hundred and fifteen	two hundred and forty	one thousand	five hundred and fifty	one thousand and fifty	six hundred and fifty-five
three hundred	two hundred and seventy	four hundred and fifty	two hundred and sixty-four	one thousand and two hundred	six hundred and thirty	one thousand two hundred and ten	seven hundred and seventy