The Watts 0383310 (Model 740-1 1/4-50) is a high-capacity ASME Section IV heating boiler safety relief valve designed for overpressure protection in large-scale commercial and industrial hydronic heating systems

This is a fixed-metering device

while the manual override allows for commissioning adjustments without power

the valve includes an externally equalized 1/4" ODF connection to compensate for evaporator pressure drops

This 6-pack is specifically engineered for HVAC leak detection and repair

Browning 5VX1400 Belt 322056-301 The Watts 0383310 (Model 740-1When you're spec'ing out a drive system, the Browning 5VX1400 Belt is a solid choice for demanding HVACR applications. This 5VX Gripnotch V belt, with its 140 inch outside length and 5 8 inch top width, is engineered for superior power transmission. Constructed from durable EPDM material, it offers an impressive operating temperature range of 60F to 250F, making it ideal for extreme conditions. The cogged and notched design ensures optimal flexibility