

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The PARKER KP78526 is a straight industrial pipe adapter designed to connect BSPP-ORR female ports to NPT or NPTF male threads. It accepts a 3/8-18 female thread on one end and a 3/8-18 male thread on the other, allowing technicians to transition between British Standard Parallel Pipe threads with O-ring face seal and National Pipe Taper threads in a single fitting. Rated to 5,000 psi maximum working pressure, this adapter suits demanding hydraulic and pneumatic applications where reliable thread conversion and leak-free sealing are required. Licensed plumbers, pipefitters, and hydraulic system technicians are the typical installers.
This adapter is used in industrial fluid power systems, hydraulic circuits, and pneumatic lines where BSPP-ORR and NPT or NPTF thread standards must interface. Common installation scenarios include connecting imported hydraulic components with BSPP ports to domestic NPT-threaded plumbing or manifold assemblies. The straight fitting geometry allows in-line installation without angular offset. This SKU is packaged in a quantity of two per package.
Designed for use in industrial hydraulic and pneumatic systems requiring a BSPP-ORR to NPT or NPTF thread conversion at 3/8-18 thread size.
Installation should be performed by a qualified pipefitter, hydraulic technician, or licensed plumber. Always depressurize and isolate the hydraulic or pneumatic circuit fully before removing or installing any fitting. Apply thread sealant appropriate to the NPT/NPTF side as required by system specifications; the BSPP-ORR side relies on its O-ring for sealing and should not have sealant applied to the sealing face. Verify the O-ring is properly seated and undamaged before torquing the connection.
Thanks for subscribing!
This email has been registered!