High Pressure Flanged Block Fittings

Fittings available in a wide range of sizes and pressure ratings

KMT’s McCartney flanged block fittings are available in a wide range of sizes and pressure ratings up to 60,000 PSI / 4100bar. Higher pressure designs will be considered upon request.

KMT will design and manufacture the fittings based on your data sheets or, using your supplied design and drawings, will simply manufacture the fittings.

Standard materials include forged AISI 4340, Special McCartney 4340 forged to Spec. #43-72, forged 15-5ph stainless steel, and ASME SA723.

KMT’s computer modeling capabilities ensure all design considerations are recognized and addressed.

KMT's abrasive honing process can be implemented upon request, providing 4 RMS surface finishes, eliminating stress riser concerns in small internal radius and intersecting bore areas. The standard bore surface finish is 32RMS.

When cyclic stress is a concern, fitting bores can be autofrettaged, effectively prolonging the in-service life of the fitting. Autofrettage pressures are calculated based on material properties and design pressure to ensure maximum benefit.