GM vacuum diaphragm valve

GM series high vacuum diaphragm valve

Characteristics and Applications of Vacuum Diaphragm Valves

GM vacuum diaphragm valve is used to connect or disconnect vacuum systems. The welded vacuum diaphragm valve is an ideal accessory in lithium bromide refrigeration equipment. The applicable medium for high vacuum diaphragm valves is air and non corrosive gases. The standard for connecting flanges shall be in accordance with GB6070 or GB4982, and can also be a welding type for connecting pipes.

Main performance specifications for vacuum diaphragm valves

Scope of application Pa	103～1.3×10-4
Leakage rate Pa L/S	6.7×10-4
Medium temperature ℃	When the diaphragm is made of nitrile rubber, the range is -25 to+80
Medium temperature ℃	When the diaphragm is made of fluororubber -30-150

The materials of the main components of the vacuum diaphragm valve

Part name	material
valve body	Carbon steel, stainless steel
membrane	Nitrile rubber, fluorine rubber
valve stem	stainless steel

Vacuum diaphragm valve appearance and connection dimensions (mm)

Outline dimension drawing 1 of GM series high vacuum diaphragm valve

Outline dimension drawing 2 of GM series high vacuum diaphragm valve

Type I connecting pipe welding diaphragm valve appearance and connection dimensions (Figure 1)

Model/Size	DN	D	H	A	L	L1
GM-10C-H(Ⅰ)	10	19	80	55	240	120
GM-25C-H(Ⅰ)	25	32	105	80	240	120
GM-40C-H	40	45	133	100	240	120
GM-50C-H	50	57	157	100	240	120
GM-10D-H(Ⅰ)	10	19	77.5	50	150	150
GM-25C-H(Ⅰ)	25	32	105	60	75	75

Type II connecting pipe welding diaphragm valve appearance and connection dimensions (Figure 2)

Model/Size	DN	D	H	A	L	L1
GM-10C-H(Ⅱ)	10	19	80	55	195	120
GM-25C-H(Ⅱ)	25	32	105	80	236	120
GM-10D-H(Ⅱ)	10	19	77.5	50	150	75
GM-25D-H(Ⅱ)	25	32	105	66	175	75

III. Outer shape and connection dimensions of flange connected diaphragm valve (Figure 3)

Model/Size	DN	D	D1	H	A	L
GM-10C-KF	10	30	12.2	80	55	75
GM-25C-KF	25	40	26.2	105	80	120
GM-40-KF	40	50	41.2	133	100	120

IV. Outer shape and connection dimensions of flange connected diaphragm valve (Figure 4)

Model/Size	DN	D	D1	H	A	L	n-Фc
GM-10C	10	46	36	80	55	75	4-Ф6
GM-25C	25	70	55	105	80	120	4-Ф7
GM-40C	40	100	80	133	100	150	4-Ф9
GM-50C	50	110	90	157	100	180	4-Ф9

Ordering precautions:

The parameter table, performance table, dimension table, pictures, text description and other information covered by the electronic sample of GM vacuum diaphragm valve products are only part of the Shanghai Yinai GM vacuum diaphragm valve manual for selection reference. Please call to request detailed product manuals, as well as CAD drawings, installation drawings, dimension drawings, etc. Due to limited editing skills, errors and inadequacies are inevitable. We sincerely hope for your criticism and correction.

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