LMI

LMI Roytronic 4 Function Valve Assemblies

48753

Select Four Function Valve

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LMI Roytronic 4 Function Valve Assemblies are highly recommended optional safety and performance enhancing discharge valves LMI pumps. Most LMI pumps come equipped with these valves, but they can also be easily retrofitted on most pump models. The four functions are:

  1. Anti-Siphon - The discharge flow path goes through a port that only open on the discharge stroke of the pump. This prevents the discharge line from siphoning liquid from the supply tank in most applications

  2. Back Pressure - The diaphragm that controls anti-siphoning creates approximately 20 PSI back pressure on the pump's discharge valve which improves performance.

  3. Pressure Relief - A second diaphragm protects the pump from over pressure by releasing fluid to a relief port in the event of excessive discharge line pressure. Select the required valve based on the preset pressure relief setting - 150 PSI or 250 PSI.

  4. Pressure Release - This function makes it easy and safe to depressurize the discharge line without loosening tubing or fittings.

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