GD-J series manual vacuum baffle valveDetailed product description：

The GD-J series manual vacuum damper valve is a valve used to open or block airflow in vacuum systems with a pressure range of 1.3 × 10-5 to 3 × 105Pa.

Main performance
Leakage rate: ≤ 1.3 × 10-9Pa.M3/S;
Applicable pressure range: 1.3 × 10-5~3 × 105Pa;
Working medium: air, non corrosive gases;
Working temperature: Fluorine glue -30 ℃~+150 ℃;
Installation location: arbitrary;
Lifespan:>100000 cycles.

Principle
Screw driven lifting valve plate, clockwise closed and counterclockwise open.

characteristic
GD-J vacuum baffle valve shaft seal double sealing, reliable sealing, long service life;
The valve plate seal has an automatic adjustment function. If the sealing force of the shaft seal decreases, the tightening nut can be tightened.

Main component materials
Body, board, cover rod	Nickel plating on stainless steel and carbon steel
sealing element	Fluorine rubber, nitrile rubber, polytetrafluoroethylene

GD-J vacuum baffle valve quick release flange connection size (standard: GB4982)

model	DN	A	B	C	d	H
GD-J10	ten	thirty	thirty	twelve point two	-	one hundred and one
GD-J16	sixteen	forty	thirty	seventeen point two	-	one hundred and fourteen
GD-J25	twenty-five	fifty	forty	twenty-six point two	-	one hundred and twenty-five
GD-J40	forty	sixty-five	fifty-five	forty-one point two	-	one hundred and fifty-five

GD-J vacuum baffle valve sleeve flange connection size (standard: GB6070)

model	DN	A	B	C	n	c	d	H
GD-J10	ten	thirty	fifty-five	forty	four	six point six	-	one hundred and one
GD-J16	sixteen	forty	sixty	forty-five	four	six point six	-	one hundred and fourteen
GD-J25	twenty-five	fifty	seventy	fifty-five	four	six point six	-	one hundred and twenty-five
GD-J40	forty	sixty-five	one hundred	eighty	four	nine	-	one hundred and fifty-five
GD-J50	fifty	eighty	one hundred and ten	ninety	four	nine	-	one hundred and ninety
GD-J63	sixty-three	eighty-eight	one hundred and thirty	one hundred and ten	four	nine	-	two hundred and twenty
GD-J80	eighty	one hundred	one hundred and forty-five	one hundred and twenty-five	eight	nine	-	two hundred and fifty-five
GD-J100	one hundred	one hundred and eight	one hundred and sixty-five	one hundred and forty-five	eight	nine	-	two hundred and seventy-three
GD-J160	one hundred and sixty	one hundred and forty-five	two hundred and twenty-five	two hundred	eight	eleven	forty	three hundred and forty-five
GD-J200	two hundred	one hundred and seventy	two hundred and eighty-five	two hundred and sixty	twelve	eleven	fifty	four hundred and ten
GD-J250	two hundred and fifty	two hundred	three hundred and thirty-five	three hundred and ten	twelve	eleven	sixty-three	four hundred and seventy-eight
GD-J320	three hundred and twenty	two hundred and fifty	four hundred and twenty-five	three hundred and ninety-five	twelve	fourteen	eighty	five hundred and sixty-five

GD-J vacuum baffle valve sleeve flange connection size (standard: JB919)

model	DN	A	B	C	n	c	d	H
GD-J10	ten	thirty	forty-six	thirty-six	four	six	-	one hundred and one
GD-J16	sixteen	forty	fifty-four	forty-two	four	six	-	one hundred and fourteen
GD-J25	twenty-five	fifty	seventy	fifty-five	four	seven	-	one hundred and twenty-five
GD-J40	forty	sixty-five	eighty-five	seventy	four	seven	-	one hundred and fifty-five
GD-J50	fifty	eighty	one hundred and ten	ninety	four	nine	-	one hundred and ninety
GD-J63	sixty-three	eighty-eight	one hundred and twenty-five	one hundred and five	four	nine	-	two hundred and twenty
GD-J80	eighty	one hundred	one hundred and forty-five	one hundred and twenty-five	four	nine	-	two hundred and fifty-five
GD-J100	one hundred	one hundred and eight	one hundred and seventy	one hundred and forty-five	four	eleven	-	two hundred and seventy-three
GD-J150	one hundred and fifty	one hundred and thirty-eight	two hundred and twenty	one hundred and ninety-five	eight	twelve	forty	three hundred and forty
GD-J200	two hundred	one hundred and seventy	two hundred and seventy-five	two hundred and fifty	eight	twelve	fifty	four hundred and ten
GD-J250	two hundred and fifty	two hundred	three hundred and thirty	three hundred	eight	fourteen	sixty-three	four hundred and seventy-eight
GD-J300	three hundred	two hundred and forty	three hundred and eighty	three hundred and fifty	eight	fourteen	eighty	five hundred and forty-five