Anti-Siphon Valves are used in a situation where there is a possibility of chemical being siphoned through the pump. This can happen if the point of injection to the system is below the level of the supply tank or into the suction side of a feed pump. The Anti-Siphon Valve will insure positive head pressure to reduce or eliminate the possibility of siphoning chemical through the pump.
Tri-Purpose Valve provides back pressure for accurate metering of fluids into low or open discharge pressure, anti-siphon protection when metering fluids into negative pressure, or pressure relief adjustable between 30 & 125 psi.
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