Blog: Balancing Valves

A thermostatic balancing valve has a sealed thermostatic "motor" in the flowstream of the valve body, which responds to temperature to open and close the valve to control water flow. The thermostat expands when heated which drives the valve seat toward closed, and contracts on falling temperature to open the valve seat. The linear action of the motor...

The Caleffi 132 Series QuickSetter™ and 132 Series QuickSetter+™ (low-lead for plumbing applications)...

We get calls about selecting, applying and setting differential pressure bypass valves (DPBVs). Why, where and when are they needed, and how do they work? The DPBV is a 2-way, self contained proportional valve with an integral differential pressure adjustment setting. The valve inlet is piped to the supply line and the outlet is piped to the return line...