Watts 0121499 Valve THPU32HP7Y it allows the VAV controller

it allows the VAV controller to modulate dampers precisely

Compatible with a wide range of motor models across Series 71

This 120Vac 60Hz replacement coil features a Class FT insulation rating

It is the direct OEM replacement for legacy Barber Colman AT-11-399

Unlike standard fixed orifices

Watts 0121499 Valve THPU32HP7Y it allows the VAV controllerThe Watts 0121499 is a technical grade 1 inch LF174A Lead Free Pressure Relief Valve specifically engineered for high output hot water heating boilers and domestic supply systems. This valve features a robust lead free copper silicon alloy body, providing a set relief pressure of 100 PSI with an impressive steam discharge capacity of 2,635,000 BTU hr. Designed to meet ASME Section IV requirements, the Watts LF174A 1 100 utilizes a non mechanical seat