Watts 152A 30-15 1/2 In Iron Process Steam Pressure Regulator, Reduced Pressure Range 3 To 15 psi

Both ends of the 152A 30-15 are 1/2 inch female threaded, inlet and outlet. It drops into a 1/2 inch threaded steam line with nipples or unions on each side; no flange kit or adapters are involved.

The reduced (downstream) pressure is adjustable from 3 to 15 psi. If your process needs a setpoint above 15 psi, this range code is the wrong one and you need a different 152A range.

Maximum working pressure on the 152A 30-15 is 200 psi (14 bar). So a boiler or header running anything up to 200 psi can feed it, and it will knock that down to a setpoint between 3 and 15 psi.

No. The 152A 30-15 is an iron-body process steam regulator and it is not lead free, so keep it off potable water service. For drinking water pressure reduction you want a lead-free bronze water pressure reducing valve instead.

It is not Buy American Act compliant. On a government, military or federally funded project with BAA or Build America requirements in the spec, this regulator will not clear the submittal.

No gauge is supplied with the 152A 30-15. Since you are setting an outlet pressure in the 3 to 15 psi band, plan on a separate downstream gauge and a gauge port tee so you can actually dial the adjustment in.

Sizing is by steam flow, not by the pipe you happen to have. The 152A 30-15 is a 1/2 inch body, so it suits small process branches, kettles, sterilizers, humidifiers and single-coil heating runs. Work out the lb/hr the equipment needs at a setpoint inside the 3 to 15 psi range and check it against Watts' capacity table for the 152A before you commit; a larger body is required if the required flow exceeds the 1/2 inch capacity.

Minimum service temperature is 33 F (0.5 C), essentially just above freezing. That matters for where you mount it: an unheated mechanical space or outdoor pit that drops below freezing needs heat trace or an enclosure, and the line should be pitched so condensate drains rather than sitting in the body.