View Union Back Wash Valve 40mm BSP Thread
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View Union Back Wash Valve 40mm BSP Thread – White 32505 Black W89280101
Zodiac Titan Multi Port Valve View Glass For Back Wash .
40mm BSP union complete.
A way to check if you have back washed
enough so as not to waste water and have a clean filter
A Clean Filter means you will have better suction for your pool cleaner.