GDQ-JPb series pneumatic vacuum damper valveDetailed product description：

The GDQ JPb series pneumatic 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 2 × 105Pa.

Principle
Powered by compressed air, it achieves the purpose of opening and closing through cylinder actuators.

Pneumatic control mode
Two position two-way, spring reset, normally closed;
Two position two-way, spring reset, normally open,
Two five in one, dual acting actuator.

characteristic
Circular design, compact structure, beautiful appearance, and light weight;
Low mechanical wear and long service life; The shaft seal adopts corrugated tube sealing;
High conductivity, maximizing the efficiency of the pump;

Main performance
Leakage rate: ≤ 1.3 × 10-9Pa.M3/S;
Applicable pressure range: 1.3 × 10-5~2 × 105 Pa;
Working medium: air, water vapor, corrosive gases;
Working temperature: Fluorine glue -30 ℃~+150 ℃;
Installation location: arbitrary;
Lifespan: ≥ 100000 cycles.

Main component materials
Valve body, cylinder head	304 or 316
Valve stem, corrugated pipe	304 or 316
O-ring	fluororubber

GDQ JPb series pneumatic vacuum baffle valve external dimensions:

model	DN	A	L	H
GDQ-J10Pb	ten	thirty	forty-three point five	one hundred and thirty
GDQ-J16Pb	sixteen	forty	sixty-two	one hundred and thirty
GDQ-J25Pb	twenty-five	fifty	seventy-eight	one hundred and forty-eight
GDQ-J40Pb	forty	sixty-five	one hundred and three	one hundred and eighty-eight

GDQ JPb series pneumatic vacuum baffle valve flange connection size:
Quick release flange connection size (standard: GB4982)

model	DN	A	B	C	L	H
GDQ-J10Pb	ten	thirty	thirty	twelve point two	forty-three point five	one hundred and thirty
GDQ-J16Pb	sixteen	forty	thirty	seventeen point two	sixty-two	one hundred and thirty
GDQ-J25Pb	twenty-five	fifty	forty	twenty-six point two	seventy-eight	one hundred and forty
GDQ-J40Pb	forty	sixty-five	fifty-five	forty-one point two	one hundred and three	one hundred and eighty-eight

Dimensions of loose flange connection (standard: GB6070)

model	DN	A	B	C	n	c	L	H
GDQ-J10Pb	ten	thirty	fifty-five	forty	four	six point six	forty-three point five	one hundred and thirty
GDQ-J16Pb	sixteen	forty	sixty	forty-five	four	six point six	sixty-two	one hundred and thirty
GDQ-J25Pb	twenty-five	fifty	seventy	fifty-five	four	six point six	seventy-eight	one hundred and forty-eight
GDQ-J40Pb	forty	sixty-five	one hundred	eighty	four	nine	one hundred and three	one hundred and eighty-eight

Sanitary flange connection size (standard: ISO-2852)

model	DN	A	B	C	L	H
GDQ-J10Pb	ten	thirty	thirty-four	twenty-seven point five	forty-three point five	one hundred and thirty
GDQ-J16Pb	sixteen	forty	thirty-four	twenty-seven point five	sixty-two	one hundred and thirty
GDQ-J25Pb	twenty-five	fifty	fifty point five	forty-three point five	seventy-eight	one hundred and forty-eight
GDQ-J40Pb	forty	sixty-five	fifty point five	forty-three point five	one hundred and three	one hundred and eighty-eight