Offered in ½ and ¾ in. Tri-Clamp® body connections, PA1 has self-draining body design and trims that comply with ASME BPE 2012 SF-4. All wetted, metal parts are constructed of 316L stainless steel. Capable of withstanding inlet pressures up to 250 psig and outlet pressures up to 135 psig, regulator also has EPDM diaphragm and also comes with option of 316L stainless steel metal seat or USP Class VI PTFE soft seat. Standard knob mounted on adjusting screw facilitates adjustment of set points.