Parker PN251F Female Pipe Rigid Nipple Fitting 1/4 in 200 Psi

Product Description

The PARKER PN251F is a female pipe rigid nipple fitting designed for hydraulic hose assemblies requiring secure, leak-resistant connections in demanding fluid-transfer applications. Built from steel with NPTF threaded ends, this straight fitting handles a maximum working pressure of 200 psi and a temperature range of -20 degrees F to 400 degrees F. Part of the Moldmate series, it is sized for 1/4 inch hose with a 1/8 inch thread and is supplied as a non-valved, single-piece component. Hydraulic technicians and pipefitters install this fitting in systems where vibration resistance and a rigid, permanent connection are required.

This fitting is specified for die casting equipment and mold coolant lines, making it a common choice in industrial manufacturing environments where coolant flow control and pressure integrity are critical. Its Moldmate series designation indicates suitability for mold cooling circuits that demand reliable sealing at elevated temperatures. The compact straight-body profile fits in tight plumbing runs where angled or bulkier fittings are impractical.

Key Features

• NPTF threaded connection provides a pressure-tight seal without sealant tape in many applications
• 200 psi maximum working pressure rated for hydraulic and coolant service
• Operating temperature range of -20 degrees F to 400 degrees F suits high-heat industrial environments
• Steel construction offers durability in abrasive or high-cycle applications
• Non-valved straight body allows unrestricted flow and simplified installation
• Moldmate series design optimized for die casting and mold coolant circuit use

Compatibility

Designed for use with die casting equipment and mold coolant lines as part of the Parker Moldmate series. Fits 1/4 inch hose with a 1/8 inch NPTF threaded port.

Installation Notes

Installation should be performed by a qualified hydraulic technician or pipefitter familiar with NPTF thread engagement requirements. Depressurize and drain the system completely before removing or installing any fittings. NPTF threads are designed to seal on the thread form itself, but inspect threads for damage before assembly. Follow applicable industry standards for hydraulic piping torque and assembly practices.