Parker PN351-40 Male Pipe Thread Extended Nipple 3/8 in

Product Description

The PARKER PN351-40 is a brass male pipe thread extended nipple fitting designed for hydraulic hose assemblies and fluid transfer lines. It features a straight body with NPTF threaded connections and a 200 psi maximum working pressure rating. The fitting accepts a 3/8-inch hose size and a 1/8-inch thread size, making it a compact solution for low-to-moderate pressure applications. The brass construction provides corrosion resistance across a wide operating temperature range of -20 degrees F to 400 degrees F. This fitting is non-valved and sold individually. It is typically installed by hydraulic technicians, plumbers, or maintenance mechanics in industrial settings.

The PARKER PN351-40 belongs to the Parker Moldmate series and is specifically suited for die casting equipment and mold coolant lines. The straight, threaded configuration allows direct inline connection between hose ends and ported components. Its NPTF thread form creates a pressure-tight mechanical seal without relying solely on sealant, which is important in coolant and hydraulic circuits where leak integrity is critical. The compact 3/8-inch body diameter fits standard hose barb and coupling assemblies common in industrial mold cooling systems.

Key Features

• 200 psi maximum working pressure rating for moderate-pressure hydraulic and coolant circuits
• Brass construction offers corrosion resistance and durability in coolant environments
• NPTF straight thread form provides a pressure-tight seal at the connection point
• Wide temperature range: -20 degrees F to 400 degrees F
• Non-valved design for unrestricted flow in line connections
• Part of the Parker Moldmate series, engineered for die casting and mold coolant applications

Compatibility

Designed for use with die casting equipment and mold coolant lines as part of the Parker Moldmate series. Fits 3/8-inch hose assemblies with 1/8-inch NPTF ported connections.

Installation Notes

Installation should be performed by a qualified hydraulic technician or industrial mechanic. Depressurize and drain the system fully before removing or installing any fittings. NPTF threads are designed to seal on the thread form, but applying an appropriate thread sealant or PTFE tape per the system manufacturer's guidelines is common practice. Inspect threads for damage before installation and do not overtighten, as brass fittings can be susceptible to thread deformation under excessive torque.