Universal tension gauges are recommended for precise calibration to avoid radial loads on the bearings

As a genuine HVAC furnace limit control

For high-pressure saturated steam

this unit supports both single/dual element configurations

Watts 0008499 Control Els PW 17895 Universal tension gauges are recommendedThe Watts 0008499 (Series LFP3) is a professional grade multi orifice flow control valve engineered specifically for tankless water heater installations. Designed to maintain optimal heat transfer, this 1 2 inch sweat connection valve prevents the excessive flow rates that often lead to inconsistent water temperatures in hydronic systems. This lead free brass unit is a direct replacement for the Watts P3 and LFP3 SWEAT 1 2 models, featuring a rugged,