Resideo TDV-040 3-1/8" Dial & Shut Off Valve Tridicator W/1/2" NPT

The Resideo TDV-040 3-1/8” Dial Tridicator with Shut-off Valve is a single unit that have three essential operates for HVAC systems. Its unique features include a dial thermometer for accurate temperature measurements, a pressure gauge for measuring system pressures and a shut-off valve that allows easy system isolation. It enables temperature measurement, and the pressure gauge tracks pressure changes to ensure system performance. With the use of a shut-off valve, the system can be easily switched off quickly for maintenance and to improve safety.