NKJ61H/Y Vacuum shut-off valveDetailed product description：

NKJ61H/Y globe valve is suitable for pipelines with working temperatures ≤ 425 ℃ and ≤ 550 ℃ and working media of water, steam or air, as an opening and closing device; Especially suitable for steam turbine condensation and vacuum negative pressure systems in thermal power plants, it plays a role in vacuum isolation and sealing.

Main structural features
1. The main body of the NKJ61H/Y globe valve adopts a cast and forged structure, with parallel double sealing pairs and semi forced bidirectional sealing. The sealing surface moves in place and the wedge-shaped block moves step by step to achieve zero leakage.
2. The sealing surface has low friction during movement, easy opening and closing, and automatic compensation for sealing surface wear.
3. The structure is simple, compact, easy to maintain, and has a long service life.
4. The valve cover packing chamber is equipped with a vacuum sealing structure, which has a self expanding and compressing effect, and is sealed with high-strength expansion materials, completely isolating the system from the atmosphere and having good system airtightness.
5. This series of valves has two connection forms: flange and welding, and there are two driving modes: manual and electric.

Main performance specifications of NKJ61H/Y vacuum globe valve:

Product Type	Shell strength test/MPa	Upper sealing test/MPa	Sealing test/MPa	Applicable Medium	Applicable temperature/℃
NKJ61H-40	6.O	four point four	four point four	Water, steam, air	≤425
NKJ61H-64	ninety-six	7.O	7.O
NKJ61H-100	15.O	eleven	11.O
NKJ61Y-40l	6.O	four point four	four point four	Water, steam, air	≤550
NKJ61Y-64l	nine point six	seven	7.O
NKJ61Y-1OOI	15.O	11.O	11.O

Main component materials of NKJ61H/Y vacuum globe valve:

Part Name	Valve body and valve cover	valve stem	valve disc	sealing surface	stem nut	filler	fastener
NKJ61H-C type	25 or WCB	Chromium stainless steel	Chromium stainless steel	H: Alloy steel	aluminum bronze	Expanded composite graphite	high-quality carbon steel
NKJ61Y-l type	chromium-molybdenum steel	20CrlM01vA or 38CrMoAlA	12CrlMo 1VA	Y: Hard alloy			chromium-molybdenum steel

Main dimensions and weight of NKJ61H/Y vacuum globe valve:

Nominal Diameter DN/mm	Nominal Pressure PN/MPa	Main external dimensions and connection dimensions/mm
		L	H	D	D0	D1	L1	α	W
1O	four	one hundred and thirty	two hundred and forty-five	thirty-six	eleven	eighteen point four	1O	-	one hundred and twenty
fifteen		one hundred and thirty	two hundred and forty-five	thirty-six	sixteen	twenty-two point five	1O	-	one hundred and twenty
twenty		one hundred and fifty	two hundred and sixty-five	forty-four	twenty-one	twenty-eight point five	eleven	-	one hundred and sixty
twenty-five		one hundred and sixty	two hundred and seventy	forty-eight	twenty-six	thirty-four point five	twelve	-	two hundred
thirty-two		one hundred and eighty	two hundred and eighty-five	forty-eight	thirty-four	-	-	37 o 30"	two hundred
forty		two hundred	three hundred and twenty	fifty-five	forty	-	-	37 o 30"	two hundred and forty
fifty		two hundred and thirty	three hundred and sixty-five	sixty-four	forty-eight	-	-	37 o 30"	three hundred and twenty
sixty-five		two hundred and ninety	41O	eighty-two	sixty-six	-	-	37 o 30"	three hundred
eighty		31O	four hundred and thirty	ninety-five	seventy-eight	-	-	37 o 30"	three hundred
one hundred		three hundred and fifty	four hundred and seventy	one hundred and seventeen	1OO	-	-	37 o 30"	three hundred and fifty
one hundred and twenty-five		four hundred	five hundred	one hundred and forty-three	one hundred and twenty-six	-	-	37 o 30"	three hundred and fifty
one hundred and fifty		four hundred and eighty	five hundred and thirty-three	one hundred and sixty-seven	one hundred and fifty	-	-	37 o 30"	four hundred
1O	six point four	one hundred and thirty	two hundred and forty-five	thirty-six	1O	eighteen point four	1O	-	one hundred and twenty
fifteen		one hundred and thirty	two hundred and forty-five	thirty-six	fifteen	twenty-two point five	1O	-	one hundred and twenty
twenty		one hundred and fifty	two hundred and sixty-five	forty-four	twenty	twenty-eight point five	eleven	-	one hundred and sixty
twenty-five		one hundred and sixty	two hundred and seventy	forty-eight	twenty-five	thirty-four point five	twelve	-	two hundred
thirty-two		one hundred and eighty	two hundred and eighty	forty-eight	thirty-three	-	-	37 o 30"	two hundred
forty		two hundred	three hundred and twenty	fifty-five	thirty-nine	-	-	37 o 30"	two hundred and forty
fifty		two hundred and thirty	three hundred and sixty-five	sixty-four	forty-eight	-	-	37 o 30"	three hundred and twenty
sixty-five		two hundred and ninety	41O	eighty-two	sixty-five	-	-	37 o 30"	three hundred and twenty
eighty		31O	four hundred and thirty	ninety-five	seventy-six	-	-	37 o 30"	three hundred and sixty
one hundred		three hundred and fifty	four hundred and seventy	one hundred and seventeen	ninety-eight	-	-	37 o 30"	four hundred
one hundred and twenty-five		four hundred and eighty	five hundred	one hundred and forty-three	one hundred and twenty-three	-	-	37 o 30"	four hundred
one hundred and fifty		four hundred and eighty	five hundred and thirty-three	one hundred and sixty-seven	one hundred and forty-eight	-	-	37 o 30"	five hundred
1O	10.O	one hundred and thirty	two hundred and forty-five	thirty-six	1O	eighteen point four	1O	-	one hundred and twenty
fifteen		one hundred and thirty	two hundred and forty-five	thirty-six	fourteen	twenty-two point five	1O	-	one hundred and twenty
twenty		one hundred and fifty	two hundred and sixty-five	forty-four	twenty	twenty-eight point five	eleven	-	one hundred and sixty
twenty-five		one hundred and sixty	two hundred and seventy	forty-eight	twenty-five	thirty-four point five	twelve	-	two hundred
thirty-two		one hundred and eighty	two hundred and eighty-five	forty-eight	thirty-two	-	-	37 o 30"	two hundred
forty		two hundred	three hundred and twenty	fifty-five	thirty-eight	-	-	37 o 30"	two hundred and forty
fifty		two hundred and thirty	three hundred and fifty-five	sixty-four	forty-eight	-	-	37 o 30"	three hundred and twenty
sixty-five		two hundred and ninety	41O	eighty-two	sixty-three	-	-	37 o 30"	three hundred and twenty
eighty		31O	four hundred and thirty	ninety-five	seventy-four	-	-	37 o 30"	three hundred and sixty
1OO		three hundred and fifty	four hundred and seventy	one hundred and seventeen	ninety-seven	-	-	37 o 30"	four hundred
one hundred and twenty-five		four hundred	five hundred	one hundred and forty-three	one hundred and twenty-three	-	-	37 o 30"	four hundred
one hundred and fifty		four hundred and eighty	five hundred and thirty-three	one hundred and sixty-seven	one hundred and forty-eight	-	-	37 o 30"	five hundred

NKJ61H/Y vacuum shut-off valve