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膜片阀
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更新时间： |
2013-07-16 |
产品型号： |
DV82系列 |
产品报价： |
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产品特点： |
DV82 Series Diaphragm Valve |
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DV82 Series Diaphragm Valve |
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Suitable for high purity applications
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316L Stainless Steel enhances weldability and resistance to corrosion
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Both manual and pneumatic actuation are available
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Face seal fittings （FSR）, compression tube fittings or butt weld connections
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Internal spring
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Metal-to-metal diaphragm seals
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High-cycle life
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100% Helium-leak tested
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Materials of Construction |
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Wetted |
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Body |
316L stainless steel |
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Seat |
PCTFE*, Vespel®** |
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Diaphragm |
Elgiloy® |
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Non-wetted |
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Nut |
316 stainless steel |
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Knob |
ABS |
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Operating Conditions |
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Maximum operating pressure: |
3500 psig（240 barg）: Pneumatic and manual actuation |
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Minimum operating pressure: |
vacuum |
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Temperature |
-40°F to 150°F （-40°C to 65 °C） |
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Pneumatic Actuator: |
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Operating Pressure |
70-125psig |
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Inlet Connection |
1/8" NPT（Female） |
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Normally |
Closed |
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Functional Performance |
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Flow Capacity |
Cv=0.16 |
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Maximum Leak Rate: |
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Inboard Leakage |
1 x 10-9 atm cc/sec He |
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Outboard Leakage |
1 x 10-9 atm cc/sec He |
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Across Seat Leakage |
4 x 10-9 atm cc/sec He |
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Proof Pressure |
150% of maximum rated pressure |
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Burst Pressure |
400% of maximum rated pressure |
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Surface Finish |
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Standard Ra （BA） |
15-20µin. |
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Internal Volume |
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0.8 cc |
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* Standard Material
** Vespel® seat is recommended for Nitrous Oxide （N2O） service .
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