Our “standard” valve is unquestionably the best of its kind on the market. Key features include a large outlet port, CGA #660 outlet threads, an O-ring seal, and large internal ports. This valve can support systems to 400+ HP. The newest versions of the NOS Hi-Flo™ valve are identified by the 45° handwheel, while earlier models had handwheels 90° to the valve. Available for 5 lb. to 20 lb. bottles.