the construction of the DP3050 series is designed to meet the electrical requirements of modern systems

37H94 is identical to 37H9401

By decoupling the trap body from the piping

Most failures are secondary to a short circuit in the 24V line

Fail-Safe Operation: Mechanical spring-return design ensures the valve stem raises to the safe position during total air loss

Watts 0382589 Valve R-410A the construction of the DP3050The Watts 0382589, also designated as model 740 1 40, is a high capacity ASME Section IV iron body boiler pressure relief valve engineered specifically for hot water space heating applications. This 1" x 1. 25" NPT valve is designed to protect hydronic systems from over pressurization, featuring a set pressure of 40 PSI and a substantial steam discharge capacity of 1,600,000 BTU hr. Its construction utilizes a rugged iron body with an expanded outlet