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Engineered for 66,000 psi, GPP’s high-pressure fittings deliver unmatched strength, reliability, and compliance for extreme industrial applications.

GPP Extreme Pressure takes pride in producing a comprehensive line of high-quality adapters tailored for the waterjet, food processing, and general fluid handling industries. Our adapters encompass a wide range of configurations, including male-to-male and male-to-female designs, accommodating various connection types such as NPT, BSP, JIC, O-ring Boss, hose barb, and compatibility with pressure specifications ranging from 20 ksi to

GPP offers highly engineered basic elements of any waterjet infrastructure, tubing, fittings, and valves. Ordinary plumbing systems can be successfully created with components available from hundreds of parts vendors. However, in high pressure systems, the source of componentry does make a difference. With GPP’s expertise in metallurgy, machining, and high-pressure engineering, you are assured of quality parts that will provide

The extreme water pressures used in waterjet equipment cause very large tensile (stretching) stresses at the wetted surfaces of the stainless steel high pressure parts. Repeated changes in these pressure-induced stresses from normal pump operation will eventually result in formation and growth of metal “fatigue cracks” at these same wetted surfaces, causing part failure manifested by a dripping or spraying