Victor 0781-3880 Medium Duty Single Stage Flowmeter Regulator (Model HSR 1470-680) has a stem type seat mechanism with a pre set pressure of 25 PSIG. Fabric reinforced neoprene diaphragm and forged brass body with housing cap. Designed for for MIG/TIG applications, it has bronze sintered inlet filter with external self-reseating relief valve and offers accurate gas flow.