Anti-Siphon Valve

Technical

Materials
Body: clear anodized aluminium.
Bonnet: powder-coated aluminium.
Cap: powder-coated aluminium.
Spring: stainless steel.
Poppet: hard-coated aluminium.
Screw: hard-coated aluminium.
Poppet Seal: Nitrile.

Operation
The 199ASV installs on the top of an aboveground storage tank with a suction rod on the inlet and the fuel supply line (to a remote pump) on the outlet of the valve.

A poppet in the valve remains normally closed, isolating the tank from siphoning. When the remote pump is activated, it overcomes a factory-adjusted spring set to a predetermined hydrostatic head pressure and allows flow of fuel out of the AST. 

An internal pressure relief valve helps absorb thermal expansion in the fuel supply line.

• Factory-Adjusted Hydrostatic Head Pressure Settings - Allow for quick, safe and easy installation on above ground tanks.
• Internal Pressure Relief Valve - Helps protect piping & fittings from damage due to thermal expansion. Set to operate between 20 to 40 PSI (1.3 to 2.7 bar).
• Aluminum Bodies - Compatible with gasoline, diesel, kerosene, ethanol, methanol, fuel oil, and jet fuels.
• Temperature Rating - -20°F - 120°F (29°C - 49°C).
• UL approved.