Parker PN351-55 Male Pipe Thread Extended Nipple Brass

Product Description

The PARKER PN351-55 is a brass male pipe thread extended nipple fitting designed for hydraulic and fluid transfer applications requiring a secure, leak-resistant threaded connection. Part of the Parker Moldmate series, this straight fitting features NPTF threading on a 1/8 inch thread size and accommodates a 3/8 inch hose. Rated to 200 psi maximum working pressure, it is built to handle temperatures from -20 degrees F to 400 degrees F. The non-valved, straight-body design provides a direct flow path without restriction, making it a practical choice for controlled fluid routing in industrial settings.

This fitting is specified for die casting equipment and mold coolant lines, where precise fluid delivery and pressure integrity are critical. The Moldmate series is engineered for use in mold cooling circuits where brass construction resists corrosion from water-based coolants. Hydraulic system technicians and industrial maintenance professionals typically install this fitting as part of a cooling or hydraulic circuit assembly. Its compact 3/8 inch body diameter and straight geometry allow installation in tight plumbing configurations common to molding machinery.

Key Features

• 200 psi maximum working pressure for reliable hydraulic service
• NPTF thread form provides a pressure-tight seal without additional sealant
• Brass construction resists corrosion in mold coolant and water-based fluid systems
• Operating temperature range of -20 degrees F to 400 degrees F suits high-heat industrial environments
• Non-valved straight design delivers unrestricted, direct flow path
• Part of the Parker Moldmate series, engineered specifically for die casting and mold cooling applications

Compatibility

Designed for use with die casting equipment and mold coolant lines as part of the Parker Moldmate series. Suitable for 3/8 inch hose connections with 1/8 inch NPTF male pipe thread interfaces in non-valved hydraulic and coolant circuit assemblies.

Installation Notes

Installation should be performed by a qualified hydraulic or industrial maintenance technician. Depressurize and drain the system fully before removing or installing any fittings. NPTF threads are designed to seal on thread engagement alone, but inspect threads for damage before assembly and verify torque against applicable system standards. Do not overtighten brass fittings, as this can crack the fitting body or distort thread sealing surfaces.