The Weldmark® by Victor G 150 manufactured by IWDC is a light duty, light capacity, single stage, industrial rear entry mc regulator, designed to be used with acetylene. Best paired with industry types such as HVAC, light fabrication and welding, hobbyists, and maintenance and repair. This 1.5 in diameter gauge is made with a brass body, high strength alloy bonnet, and fabric reinforced neoprene diaphram. Connection details include 0.628 in female rear port 200 CGA inlet, with NGO thread standard at 20 threads per inch, and 0.5625 in male 023 CGA outlet, with a left hand UNF standard thread at 18 threads per inch. The inlet pressure cylinder max is rated at 350 psi, inlet pressure gauge max rated at 500 psi, and inlet pressure max rated at 350 psi. The outlet pressure min/max is rated at 2/15 psig, and outlet pressure gauge max is rated at 15 psig. Meets or exceeds UL Listed standards.