Water Pressure Regulators
Excessive pressure can cause your plumbing to leak or even rupture. It doesn't take long at high pressures to cause damage, even a fairly brief "spike" can do it. RV pressure regulators are installed in your water supply line to limit the water pressure going into your RV.
263A-LF Regulator, Stainless Steel Oil Filled Gauge, Stainless Steel (s/s) Parts Kit