GM series manual vacuum diaphragm valveDetailed product description：

The GM series manual vacuum diaphragm valve is a valve used to open or block airflow in vacuum systems ranging from 1.3 × 10-5 to 3 × 105Pa.

Main performance

Leakage rate: ≤ 1.3 × 10-9Pa.M3/S;
Applicable pressure range: 1.3 × 10-5Pa to 3 × 105Pa;
Working temperature: Fluororubber -25 ℃~+150 ℃;
Installation location: arbitrary;
The pressure difference on both sides of the valve plate is not related to the opening and closing of the valve;
Lifespan: ≥ 10000 cycles.

Principle
Rotate the screw to move the valve core up and down, while pulling the diaphragm up and down to close and open.

characteristic
The GM series manual vacuum diaphragm valve has a compact, simple, small volume, and beautiful appearance;
The switch is guided and moves smoothly;
Small closing torque, long lifespan, ≥ 30000 times;
The membrane compression can be automatically adjusted, with uniform compression and reliable sealing;
The membrane is inserted into the valve core in a push in manner, making it easy to replace;

Main component materials
Valve cover, valve core, valve body	304； Valve stem: H62
Diaphragm	Fluorine rubber, ethylene propylene rubber, etc

Overall dimensions

Model	DN	E	H	L
GM-10	ten	fifty	sixty-five	eighty
GM-25	twenty-five	sixty-five	eighty-eight	one hundred and ten
GM-40	forty	eighty	one hundred and twelve	one hundred and forty

GM vacuum diaphragm valve insertion welding connection size

Model	DN	A	B	C	L	Kg
GM-10A	ten	twenty-five	eighteen	ten	eighty	zero point nine
GM-25A	twenty-five	forty	thirty-three	fourteen	one hundred and ten	one point eight
GM-40A	forty	forty-eight	forty	eighteen	one hundred and forty	two point nine

GM vacuum diaphragm valve loose flange connection size (standard: GB6070)

Model	DN	A	B	n	C	L	Kg
GM-10B	ten	fifty-five	forty	four	six point six	eighty	zero point nine
GM-25B	twenty-five	seventy	fifty-five	four	six point six	one hundred and ten	one point eight
GM-40B	forty	one hundred	eighty	four	nine	one hundred and forty	two point nine

GM vacuum diaphragm valve quick release flange connection size (standard: GB4982)

Model	DN	A	B	C	L	Kg
GM-10C	ten	thirty	twelve point two	sixteen	eighty	zero point nine
GM-25C	twenty-five	forty	twenty-six point two	thirty-one	one hundred and ten	one point eight
GM-40C	forty	fifty-five	forty-one point two	forty-six	one hundred and forty	two point nine

GM vacuum diaphragm valve sanitary flange connection size (standard: ISO-2852)

Model	DN	A	B	C	L	Kg
GM-10D	ten	thirty-four	twenty-seven point five	sixteen	eighty	zero point nine
GM-25D	twenty-five	fifty point five	forty-three point five	thirty-one	one hundred and ten	one point eight
GM-40D	forty	fifty point five	forty-three point five	forty-two	one hundred and forty	two point nine