Parker PN553 Male Pipe Rigid Nipple Fitting 1/2 in 200 Psi

Product Description

The PARKER PN553 is a male pipe rigid nipple fitting designed for hydraulic and fluid-transfer applications where a secure, non-valved threaded connection is required. Constructed from brass with a straight body profile, this fitting uses NPTF threading to create a pressure-tight mechanical seal without relying on sealant tape alone. It carries a maximum working pressure of 200 psi and handles fluid temperatures from -20 degrees F to 400 degrees F. The 1/2-inch hose size paired with a 3/8-inch NPTF thread makes it a compact, reliable interface point for controlled-flow systems. Licensed plumbers, pipefitters, and fluid-system technicians are the primary installers of this type of fitting.

The PN553 belongs to the Parker Moldmate series, engineered specifically for die casting equipment and mold coolant lines. These environments demand fittings that resist thermal cycling, maintain pressure integrity under continuous flow, and hold up to the oils and water-glycol blends common in industrial mold cooling circuits. The straight, rigid nipple configuration suits installations where hose routing is fixed and movement or flex at the connection point is not needed. This fitting ships individually and is suited for both initial build and maintenance replacement in production environments.

Key Features

• Brass construction resists corrosion in water-glycol and light-oil coolant circuits
• NPTF threaded shaft type provides a dry-seal mechanical connection
• 200 psi maximum working pressure suits typical mold coolant line operating ranges
• Wide service temperature range: -20 degrees F to 400 degrees F
• Straight, rigid body keeps hose routing simple in fixed-line assemblies
• Non-valved design allows unrestricted flow when connected

Compatibility

Designed for use with die casting equipment and mold coolant lines as part of the Parker Moldmate series. Fits 1/2-inch hose with a 3/8-inch NPTF threaded connection point.

Installation Notes

Depressurize and drain the system completely before removing or installing any hydraulic or coolant fittings. NPTF threads are designed to seal on the thread form itself; inspect threads for damage before assembly and torque to the fitting manufacturer's standard hand-tight-plus guidelines using an appropriate wrench. Installations in industrial fluid systems should comply with applicable facility safety standards and equipment OEM specifications. A licensed pipefitter or fluid-system technician should perform or verify the installation in pressurized production environments.