Midland Industries 500062 Reducing Pipe Coupling Steel

Product Description

The MIDLAND INDUSTRIES 500062 is a steel reducing pipe coupling designed to connect two female NPTF threaded ports of different sizes within a hydraulic or fluid system. One end accepts a 3/8-18 NPTF thread and the other accepts a 1/8-27 NPTF thread, allowing a direct in-line reduction between two pipe segments without additional adapters. The body is machined steel and rated for operating temperatures up to 375 degrees F. At 1.13 inches in length, this is a compact fitting suited for tight installations. It is installed by licensed plumbers, hydraulic system technicians, and experienced pipefitters working on fluid transfer and distribution systems.

This coupling is used in hydraulic plumbing circuits, industrial fluid lines, and mechanical systems where a 3/8-inch pipe run must transition to a 1/8-inch port or vice versa. The NPTF thread form provides a dry-seal connection that does not depend on a sealant compound alone to prevent leakage, making it appropriate for pressure applications. It falls within the 5000 Series Steel Pipe Coupling category and conforms to SAE 140138 dimension standards, ensuring consistent fitment with other SAE-spec components in the same circuit.

Key Features

• Reduces from 3/8-18 NPTF female to 1/8-27 NPTF female in a single in-line fitting
• Steel construction supports high-temperature and high-pressure hydraulic service
• Rated for operating temperatures up to 375 degrees F
• NPTF dry-seal thread form minimizes reliance on thread sealant to maintain pressure integrity
• Conforms to SAE 140138 dimension standards for interchangeability with other SAE-spec fittings
• Compact 1.13-inch body length suits space-constrained installations

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid system plumbing applications requiring an in-line female NPTF 3/8-inch to 1/8-inch pipe size reduction in steel construction.

Installation Notes

Installation is typically performed by a licensed plumber or qualified hydraulic technician. Depressurize and drain the system completely before removing or installing any pipe fitting. NPTF threads are designed to seal on the thread form itself, but applying a compatible thread sealant tape or compound per the system manufacturer's recommendation is common practice. Verify thread engagement and torque to the fitting manufacturer's standard; do not overtighten steel fittings into softer-material ports. Applicable work should comply with ASME B31.3 or the governing mechanical or hydraulic code for the installation jurisdiction.