Color Coded No need to guess which end is for the hot water and which end is for the cold water. The valves are color coded. The blue end goes with cold water and the red end goes to the hot water.
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Pex Tubing Made in the USA, this bypass valve is comprised by a a length of PEX tubing, crimp rings, and fittings.
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PPSU Valves The valves are PPSU valves. These valves are more resistant to heat, aggressive water, and chemicals than normal valves are. This will help extend the life of the system.
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