A water pressure regulator is one of the top three items I command recommend to all RV owners (the other two are a surge protector and a valid driver’s license). This simple $20 device is a vanguard for your water system, protecting your delicate plastic fittings from the evils of high water pressure.
Plastic and Pressure Don’t Make Good Friends
“Plastic fittings,” I say? Yes, I do! Whereas your sticks n’ bricks house was likely plumbed with sweated copper pipe, your RV is likely plumbed with PEX or PB plastic pipe and polymer plastic fittings. Plus, the fittings on your faucets, shower diverters, toilet water valve, city water inlet, and other features are usually also – you guessed it – plastic!
These plastic fittings grow brittle with age, much like ourselves. They can easily crack or bust from pump water hammer, pressure spikes, and high city water pressure.
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