Relief Valves are designed for gas or liquid applications.
Press Release Summary:

Original Press Release:
Gas Or Liquid Service, Adjustable High Pressure Relief Valves
Erie, PA - January 7, 2002 - MAXPRO Technologies introduces a series of high-pressure relief valves for gas or liquid applications. These valves are designed to protect a system or
device from over-pressure damage and failure.
MAXPRO high pressure relief valves are available in pressures from 1,000 to 10,000 psi. The valve features a stainless steel body, nylon seat and the PTFE/EPDM seals. Inlet or thru ports and outlet/vent sizes are 1/4" FNPT. The valve orifice is 0.70" diameter; the Cv is 0.12. These MAXPRO valves are externally adjustable and can be mounted in line.
MAXPRO Technologies offers a complete line of Maximator® air driven liquid pumps, air amplifiers, and gas boosters. Packaged systems available include gas booster systems, air amplifier systems, hydraulic power units and hydraulic test stands for pressure testing. MAXPRO also offers cost-effective repair and refurbishing services, featuring original manufacture parts and guaranteed quality.