Watts 152A-030140 1 1 In Iron Process Steam Pressure Regulator, Reduced Pressure Range 30 To 140 psi

Maximum working pressure is 200 psi (14 bar). That is the ceiling for the supply side, and the valve reduces down to a setting anywhere in the 30 to 140 psi band. If your boiler header runs above 200 psi, this is the wrong valve.

No. It is an iron-body process steam regulator and is not lead free, so it should not be used on potable water lines. For domestic water pressure reduction you want a lead-free bronze water pressure reducing valve instead.

It ships with no gauge. Plan on a separate gauge and a tapped tee or gauge port downstream of the valve, otherwise you have no way to verify the setting when you adjust it. Most steam PRV installs also want a gauge on the inlet side to confirm supply pressure stays within the 200 psi limit.

No. The 152A-030140 is listed as not Buy American Act compliant, so it will not satisfy a BAA or Buy America domestic-content clause on a federal or federally funded project. On open-spec commercial or institutional work that restriction does not apply.

Body material here is iron, which is the usual choice for process steam and higher pressure industrial service, and it carries a 200 psi working pressure. Bronze bodies are the normal pick for potable water and lower pressure service. Since this one is not lead free, the iron body is doing exactly the job it is meant for: steam and process lines, not drinking water.

The manufacturer part number is 152A-030140 1, a Watts 152A series standard-style regulator with 1 inch female threaded ends and a 30 to 140 psi reduced pressure range. The pressure band is built into the part number, so other 152A numbers cover other ranges.

Minimum rated temperature is 33 F (0.5 C), essentially just above freezing. The iron body is not intended to sit in a line that can freeze, so in an unheated mechanical space or rooftop run the piping and valve need to stay above that point.