DK941X Vacuum butterfly valveDetailed product description：

Product Overview:

DK941X vacuum butterfly valve is suitable for use as a closed circuit equipment on non corrosive saturated steam low vacuum pipelines. This series of valve sealing butterfly valves uses a pressure of 0.25MPa to seal the shaft seals at both ends of the butterfly valve, ensuring that there is no leakage at the shaft seals. The DS9D41X-2.5C model has a double seat structure, with rubber slits and pressure water (pressure value of 0.25MPa) sealing between the two seats and at the shaft end. If required by the user, an electric heating device can be installed on the closed valve body.

Main parameters of DK941X vacuum butterfly valve

Model		DS9D41X-2.5C	DS9D41X-2.5C
Nominal pressure (MPa)		zero point two five	zero point two five
Test pressure (MPa)	strength test	zero point four	zero point four
	Sealing Test	zero point two seven five	zero point two seven five
Work pressure (MPa)		zero point two five	zero point two five
Applicable Medium		Non corrosive saturated water vapor
Applicable temperature		≤120	≤200
Vacuum Shallow Leakage Rate		≤6.67×10-2PaM3S-1
Flange connection size standard		GB25555～2556-81
Pressure test standard		GB/T13927-92

DK941X vacuum butterfly valve main component materials

Part Name	Valve body and valve plate	Valve shaft, sealing seat	Butterfly plate sealing ring
Material	Q235-A, F steel plate	2Cr13、1Cr18Ni9Ti	Ternary ethylene rubber, fluororubber

DK941X-2.5C vacuum butterfly valve main external connection dimensions Unit: mm

DN	D	D1	D2	L	n-d	b	f	A	B	H
one thousand	one thousand one hundred and seventy	one thousand one hundred and twenty	one thousand and eighty	three hundred and five	28-30	forty-two	five	five hundred and ninety	nine hundred and eighty	two thousand two hundred and thirty
one thousand and two hundred	one thousand three hundred and seventy-five	one thousand three hundred and twenty	one thousand two hundred and eighty	three hundred and eighty-one	32-30	forty-four	five	five hundred and ninety	nine hundred and eighty	two thousand four hundred and seventy-six
one thousand and four hundred	one thousand five hundred and seventy-five	one thousand five hundred and twenty	one thousand four hundred and eighty	three hundred and eighty-one	36-30	forty-six	five	six hundred and thirty	one thousand one hundred and seventeen	two thousand seven hundred and ninety-three
one thousand and six hundred	one thousand seven hundred and ninety	one thousand seven hundred and thirty	one thousand six hundred and ninety	four hundred and fifty-seven	40-30	forty-eight	five	six hundred and thirty	one thousand one hundred and seventeen	two thousand eight hundred and fifty
one thousand and eight hundred	one thousand nine hundred and ninety	one thousand nine hundred and thirty	one thousand eight hundred and ninety	four hundred and fifty-seven	44-30	fifty	five	eight hundred and fifty	one thousand four hundred and eighty	three thousand one hundred and eighty-seven
two thousand	two thousand one hundred and ninety	two thousand one hundred and thirty	two thousand and ninety	five hundred and forty	48-30	fifty-two	five	eight hundred and fifty	one thousand four hundred and eighty	three thousand three hundred and ten
two thousand and two hundred	two thousand four hundred and five	two thousand three hundred and forty	two thousand two hundred and ninety-five	five hundred and ninety	52-33	fifty-six	six	eight hundred and fifty	one thousand five hundred and fifty-four	three thousand nine hundred and fifteen
two thousand and four hundred	two thousand six hundred and five	two thousand five hundred and forty	two thousand four hundred and ninety-five	six hundred and fifty	56-33	sixty	six	eight hundred and fifty	one thousand five hundred and fifty-four	four thousand one hundred and eighty-seven
two thousand and six hundred	two thousand eight hundred and five	two thousand seven hundred and forty	two thousand six hundred and ninety-five	seven hundred	60-33	sixty-four	six	one thousand five hundred and thirty-three	one thousand four hundred and thirty-five	four thousand four hundred and nine
two thousand and eight hundred	three thousand and thirty	two thousand nine hundred and sixty	two thousand nine hundred and ten	seven hundred and sixty	64-36	sixty-six	six	one thousand five hundred and eighty-five	one thousand eight hundred and thirty-seven	four thousand seven hundred and sixty
three thousand	three thousand two hundred and thirty	three thousand one hundred and sixty	three thousand one hundred and ten	eight hundred and ten	68-36	seventy	six	one thousand five hundred and eighty-five	one thousand eight hundred and thirty-seven	five thousand and eight