GM High vacuum diaphragm valve use valve rod to press rubber film directly on the valve seat, use to cut-off or connect Vacuum system. Connection form as: Lap joint flange connection, fast unload flange connection, weld type connection. Weld type connection is divided into weld I type connection(both end weld), weld II type connection(one end weld, another end insert). Applicable medium can be air and noncorrosive gases.
Basic Dimensions
Applicable Scope(Pa) | 2×105~1.3×10-4 |
Valve Leak Rate(Pa.L/S) | ≤1.3×10-6 |
Medium Temperature(℃) | -25~+80(Seal Material: chemigum) -30~+150(Seal Material: viton) |
Install Position | arbitrary |
lap joint flange connection and overall Dimensions(mm)
model | diameter(DN) | ΦD | ΦB | ΦW | H | L | n-ΦC | Flange standard |
GM-10 | 10 | 46 | 36 | 55 | 75 | 75 | 4-Φ6 | JB919 |
GM-25 | 25 | 70 | 55 | 90 | 115 | 120 | 4-Φ7 | GB/T6070 |
GM-40 | 40 | 100 | 80 | 100 | 132 | 150 | 4-Φ9 | |
GM-50 | 50 | 110 | 90 | 100 | 157 | 180 | 4-Φ9 |
fast unload flange connection and overall Dimensions
model | diameter(DN) | ΦD | ΦB | ΦW | H | L | Flange standard |
GM-10/KF | 10 | 30 | 12.2 | 55 | 75 | 75 | GB4892 |
GM-25/KF | 25 | 40 | 26.2 | 90 | 115 | 100 | |
GM-40/KF | 40 | 55 | 41.2 | 100 | 132 | 150 | |
GM-50/KF | 50 | 75 | 52.2 | 100 | 157 | 180 | / |
weld type connection and overall Dimensions
model | diameter(DN) | ΦD | ΦW | H | L |
GM-10-H(Ⅰ) | 10 | 19 | 55 | 75 | 150 |
GM-25H(Ⅰ) | 25 | 32 | 90 | 115 | 200 |
GM-40H(Ⅰ) | 40 | 45 | 100 | 132 | 240 |
GM-50H(Ⅰ) | 50 | 57 | 100 | 157 | 240 |
GM-10H(Ⅱ) | 10 | 9 | 55 | 75 | 150 |
GM-25H(Ⅱ) | 25 | 19 | 90 | 115 | 200 |
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