The Webstone Isolator EXP E2 Isolation Valve Kit #44443WPR (Lead-Free) for All Bosch Gas Tankless Water Heaters comes with separate hot and cold isolation valves and a Pressure Relief Valve. The NEW Webstone isolation valve set #44443WPR replaces the older set of 44443PR. Easy two-step installation of your tankless water heater with unsurpassed safety, features and benefits. This is a complete inlet/outlet valve system that provides everything you need for a secure installation, including full port testing and flushing of the system with easy-to-install union connections.
Convenient two-step color coded union connections.
Easy quarter turn ball valve operation
Full port throughout entire valve body
Individually controlled full port drain outlet
Ready to use for flushing or descaling (Please see the Whitlam Descale Kit)
3/4" outlet for pressure relief valve
1/2" water supply adapters included (except when purchased with the 3/4" Bosch C1210ES/C1050ES/940ES/800ES heaters as they are not needed)
Heavy forged brass construction
Conforms to NSF 61-9
Allows for one man full diagnostic testing of heater unit
This product is intended for use with all of our indoor and outdoor tankless water heaters.
The Webstone 44443WPR Isolation valves are a set of Hot & Cold Full Port Forged Brass Ball Valves w/ Hi_Flow Hose Drains & Pressure Relief Valve Outlet 3/4" IPS Union x 3/4" IPS (500 WOG) & PRESSURE RELIEF VALVE (150 PSI/200K BTU) ISO 9001.