3/4" New Vacuum Relief Valve for Heliocol Pool Solar Panels - New White EDN3_L1MST07
$11.40
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Original replacement part for the PVC Vacuum Relief Valve on Heliocol solar pool heaters. Allows air to enter the solar pool heating system when the pool pump is turned off and facilitate water drainage from the panels. This is especially important when winterizing your panels to prevent freeze damage.
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