Dixon® Pressure/Vacuum Relief Cap, Automatic, Cap Fitting/Connector, 2-1/2 in Nominal, MNPT End Style, Zinc, Domestic

ITEM FEATURES:

• Pad lockable to prevent fuel theft and tampering
• Normally closed vent stops fuel evaporation and airborne contaminants
• Protects tank from pressure or vacuum buildup
• Relieves pressure at 7.5 to 9 psi and vacuum at 0.33 HG
• Can be used as a fuel filler cap
• Manufactured to thread into both NPS and NPT tank openings
• Die cast zinc body, brass screen
• Used on stationary fuel tanks
• Not intended for use on mobile tanks, to ensure that the cap can properly vent, the vent cap must be kept free of any debris i.e. dirt, snow, ice, rags etc