Uniweld’s RV8017 is a heavy duty, single stage hydrogen regulator with a forged brass body and bonnet, and a 3-1/4 inch stainless steel diaphragm. A polished brass, single scale, 2-1/2 inch diameter, 0-4000 PSI Contents Gauge (Part No. G27) and 0-200 PSI Delivery Gauge (Part No. G24) allow you to monitor pressure flowing through the regulator. Additionally, as part of our RV80 series, the RV8017 comes with a removable back plug for fast seat servicing. The RV8017 has a CGA350 inlet connection, a “B” Left Hand 9/16 inch -18 Male outlet connection, and a delivery pressure of 5-125 PSI. The regulator also includes an externally serviceable pressure relief device (PRD) which protects the regulator. The PRD is not designed to protect the downstream equipment. Since hydrogen is flammable, this regulator must be used outside in open air and not in an enclosed space. If used in an enclosed space, the PRD must be vented to outside open air. Uniweld single stage regulators are used for general purpose applications where nominal delivery pressure changes, due to decreasing cylinder pressure, do not affect operations. Single stage regulators have greater flow capacity than two stage models. Made in U.S.A.