The 170 Series features instantaneous on-off operation.  These valves have a solid bottom and are O-ring sealed.  The O-ring seal, unlike packings, require no maintenance.  The lapped brass body and plug are individually mated to give the best possible seal. 
Generally recommended for gasoline, oil, kerosene, LP gas, gas-air mixtures, and air system applications.  The maximum operating pressure is 30 P.S.I. 
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Common Applications:
Motor Craft
Fuel/Water Drain Applications
Gas Lanterns