GDQ-J series pneumatic vacuum damper valveDetailed product description：

The GDQ-J series pneumatic vacuum damper valve is a valve used to open or block airflow in vacuum systems with a pressure range of 10-5-106Pa.

Main performance
Leakage rate: 1.3 × 10-9Pa; M3/S。
Applicable pressure range: 1.3 × 10-5~105Pa;
Working medium: gas, non corrosive gas;
Working temperature: Fluororubber -30 ℃~+150 ℃;
Pressure difference on both sides of the opening and closing valve plate: ≤ 1000Pa;
Installation location: DN ＜ 300, any; DN ≥ 300 vertical
Gas source pressure: 4-6Kgf/cm2;
Electromagnetic directional valve: voltage 220V, power 3W;
Opening and closing signal: control signal; Electric signals are available for users to choose from.

characteristic
Compact structure, reliable sealing, long service life;
Increase the conductivity and improve the pumping speed of the pump.
Easy to install, use, and maintain, and there is no need to remove the valve during major repairs.
Two types of position signal indications are available for users to choose from: electrical signals using micro switches and magnetic switches;

Main component materials
Body, pole, board	Stainless steel, carbon steel
Sealing components	Fluorine glue, Ding Fen glue

[Flange connection size]
GDQ pneumatic vacuum baffle valve quick release flange connection dimensions (standard: GB4982)

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

GDQ-J series pneumatic vacuum baffle valve sleeve flange connection size (standard: GB6070)

model	DN	A	B	C	n	c	d	H
GDQ-J10	ten	thirty	fifty-five	forty	four	six point six	-	one hundred and one
GDQ-J16	sixteen	forty	sixty	forty-five	four	six point six	-	one hundred and fourteen
GDQ-J25	twenty-five	fifty	seventy	fifty-five	four	six point six	-	one hundred and twenty-five
GDQ-J40	forty	sixty-five	one hundred	eighty	four	nine	-	one hundred and fifty-five
GDQ-J50	fifty	eighty	one hundred and ten	ninety	four	nine	-	one hundred and ninety
GDQ-J63	sixty-three	eighty-eight	one hundred and thirty	one hundred and ten	four	nine	-	two hundred and twenty
GDQ-J80	eighty	one hundred	one hundred and forty-five	one hundred and twenty-five	eight	nine	-	two hundred and fifty-five
GDQ-J100	one hundred	one hundred and eight	one hundred and sixty-five	one hundred and forty-five	eight	nine	-	two hundred and seventy-three
GDQ-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
GDQ-J200	two hundred	one hundred and seventy	two hundred and eighty-five	two hundred and sixty	twelve	eleven	fifty	four hundred and ten
GDQ-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
GDQ-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
GDQ-J400	four hundred	two hundred and eighty-five	five hundred and ten	four hundred and eighty	sixteen	fourteen	one hundred	nine hundred and twenty-five
GDQ-J500	five hundred	three hundred and sixty	six hundred and ten	five hundred and eighty	sixteen	fourteen	one hundred and twenty-five	one thousand and two hundred
GDQ-J630	six hundred and thirty	four hundred and fifty	seven hundred and fifty	seven hundred and twenty	twenty	fourteen	one hundred and sixty	one thousand five hundred and twenty
GDQ-J800	eight hundred	five hundred and twenty	nine hundred and twenty	eight hundred and ninety	twenty-four	fourteen	two hundred	one thousand nine hundred and twenty
GDQ-J1000	one thousand	seven hundred	one thousand one hundred and twenty	one thousand and ninety	thirty-two	fourteen	three hundred and twenty	two thousand and six hundred
GDQ-J1250	one thousand two hundred and fifty	eight hundred	one thousand four hundred and forty	one thousand four hundred and four	thirty-six	sixteen	four hundred	three thousand

GDQ pneumatic vacuum baffle valve sleeve flange connection size (standard: JB919)

model	DN	A	B	C	n	c	d	H
GDQ-J10	ten	thirty	forty-six	thirty-six	four	six	-	one hundred and one
GDQ-J16	sixteen	forty	fifty-four	forty-two	four	six	-	one hundred and fourteen
GDQ-J25	twenty-five	fifty	seventy	fifty-five	four	seven	-	one hundred and twenty-five
GDQ-J40	forty	sixty-five	eighty-five	seventy	four	seven	-	one hundred and fifty-five
GDQ-J50	fifty	eighty	one hundred and ten	ninety	four	nine	-	one hundred and ninety
GDQ-J63	sixty-three	eighty-eight	one hundred and twenty-five	one hundred and five	four	nine	-	two hundred and twenty
GDQ-J80	eighty	one hundred	one hundred and forty-five	one hundred and twenty-five	four	nine	-	two hundred and fifty-five
GDQ-J100	one hundred	one hundred and eight	one hundred and seventy	one hundred and forty-five	four	eleven	-	two hundred and seventy-three
GDQ-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
GDQ-J200	two hundred	one hundred and seventy	two hundred and seventy-five	two hundred and fifty	eight	twelve	fifty	four hundred and ten
GDQ-J250	two hundred and fifty	two hundred	three hundred and thirty	three hundred	eight	fourteen	sixty-three	four hundred and seventy-eight
GDQ-J300	three hundred	two hundred and forty	three hundred and eighty	three hundred and fifty	eight	fourteen	eighty	five hundred and forty-five
GDQ-J400	four hundred	two hundred and eighty-five	five hundred	four hundred and sixty-five	eight	eighteen	one hundred	nine hundred and twenty-five
GDQ-J500	five hundred	three hundred and sixty	six hundred	five hundred and sixty-five	twelve	eighteen	one hundred and twenty-five	one thousand and two hundred
GDQ-J600	six hundred	four hundred and fifty	seven hundred and ten	six hundred and seventy	twelve	twenty-one	one hundred and fifty	one thousand five hundred and twenty
GDQ-J800	eight hundred	five hundred and twenty	nine hundred and twenty	eight hundred and eighty	twenty	twenty-one	two hundred	one thousand nine hundred and twenty
GDQ-J1000	one thousand	seven hundred	one thousand one hundred and forty	one thousand and ninety	twenty-four	twenty-three	three hundred	two thousand and six hundred