• Technical Specifications
• Rated pressure - 6000 PSI (40 MPa)
• Inlet : 1/4" male NPT
• Materials / anodized aluminum, Buna N seals
• Model 708 seals on 4500 PSI cylinder valves but vents on lower pressure cylinder
• Model 835 seals on either type of cylinder
• Typical Applications
• Cylinder charging stations
• Mobile and stationary fire fighting facilities
• Connection to, filling, and transferring from CGA cylinders

The model 873 is a piston type hand loading regulator. It utilizes a balanced poppet design for high flow and minimum effect of inlet pressure on outlet pressure. The poppet assembly is contained in a cartridge with internal filtration permitting very easy in field servicing. The low cost poppet cartridge (pictured on the opposite side of this sheet) is factory preassembled. It contains the more critical valving elements of the regulator thus eliminating in-field servicing problems. The regulator is self venting but is optionally available without the vent. This regulator design was developed for gas mixers for commercial diving where high flow, very precise pressure control and high reliability are needed. They have served this application for many years. It is available with different size sensing pistons resulting in a complete range of outlet pressures. A highly sensitive dome loaded version rated to 6000 PSI is also available.