Watts 0830886 1/2 In Iron Process Steam Pressure Regulator, Reduced Pressure Range 3 To 15 psi

Both ends of the Watts 152A (model 830886) are 1/2 inch female NPT threaded, inlet and outlet alike. So it threads directly onto 1/2 inch male NPT nipples or close nipples off your steam line, no flanges or unions required. Because inlet and outlet are the same size and type, it drops into a straight 1/2 inch run as long as you respect flow direction.

The reduced (downstream) pressure is field adjustable from 3 to 15 psi. That covers typical low pressure process and heating steam work. If your process needs a setpoint above 15 psi, this spring range won't reach it and you need a different reduced pressure range in the 152A family.

No. The 830886 ships without an integral strainer and without a gauge. On a steam reducing station you'll want to pipe a separate Y-strainer upstream to keep scale off the stainless steel disc, and add a gauge on the downstream side so you can actually dial the 3 to 15 psi setpoint. Budget both as separate line items on the order.

No. The 152A is a process steam pressure regulator for commercial and industrial service, with an iron body and no corrosion resistant coating. For domestic water pressure reduction you want a bronze or lead-free water pressure reducing valve, not this one.

It does not. The 152A has no thermal expansion bypass, so if you're protecting a closed downstream system against expansion you handle that with a separate relief valve or expansion tank. On steam reducing duty that is normally a downstream safety relief valve sized to the reduced 3 to 15 psi setpoint.

Order Watts 152A, manufacturer part number 830886. That is the 1/2 inch NPT, standard valve style version with the 3 to 15 psi reduced pressure spring range. Adjacent models in the series carry different port sizes and different spring ranges, so match both the 1/2 inch size and the 3 to 15 psi range when you spec it.