Watkins Wellness 1.5" Check Valve w/ Spring 71981 Type_Pillow but it works alongside your

but it works alongside your sanitizer and shock — not instead of them

They control the metal-based staining and scaling that quietly damages spa surfaces and equipment — but instead of measuring out a liquid

dramatically improving overall spa operation and health

Utopia Cantabria CAB 2018-2023

Watkins Wellness 1.5" Check Valve w/ Spring 71981 Type_Pillow but it works alongside yourWatkins Wellness 1. 5" Check Valve w Spring 71981 Overview A Watkins Wellness replacement part. A check valve is a one way valve that allows water (or air) to flow in only one direction and prevents it from flowing backward. What's in the Box 1 x Watkins Wellness 1. 5" Check Valve w Spring 71981 Brand Watkins Wellness