Eaton 2045-2-4S Pipe Adapter 1/4-18 Mnpt X 1/8-27 Fnpsm

Product Description

The EATON 2045-2-4S is a straight industrial pipe adapter designed to connect a 1/4-18 male NPT fitting to a 1/8-27 female NPSM port. It steps down thread size between two pipe connections in a single inline fitting, making it a common solution when a larger male port must mate with a smaller female port in hydraulic, pneumatic, or fluid-transfer systems. The adapter carries a maximum working pressure of 2,500 psi and handles temperatures from -40 degrees F up to 250 degrees F, giving it a broad service range across industrial and mechanical applications. Licensed tradespeople in plumbing, HVAC, and industrial maintenance install this type of adapter during system assembly or repair.

This adapter fits applications where MNPT male threads must transition to FNPSM female threads in a straight-run configuration. Typical install scenarios include hydraulic line assemblies, compressed-air distribution systems, fluid-handling manifolds, and equipment utility connections requiring a 1/4-inch to 1/8-inch thread step-down. It is suited for both new construction and retrofit service work in industrial and commercial environments. The SAE 140130 standard designation confirms it meets recognized industry dimensional and performance criteria for pipe-thread fittings.

Key Features

• Straight adapter profile keeps the connection inline with no change in flow direction
• 2,500 psi maximum working pressure rating for hydraulic and high-pressure pneumatic service
• Wide temperature range from -40 degrees F to 250 degrees F suits demanding environments
• 1/4-18 MNPT male thread to 1/8-27 FNPSM female thread step-down in a single fitting
• Meets SAE 140130 standards for pipe-thread adapter dimensional compliance

Compatibility

Designed as an OEM-style replacement or system-build component for industrial pipe assemblies requiring a 1/4-18 MNPT to 1/8-27 FNPSM straight adapter rated to 2,500 psi.

Installation Notes

This fitting is typically installed by licensed plumbers, pipefitters, or qualified industrial maintenance technicians. Depressurize and isolate the system completely before removing or installing any pipe fittings. Apply thread sealant or PTFE tape appropriate for the fluid service; consult system design specifications for sealant compatibility. Follow applicable piping codes, including ASME B31 or IFGC requirements, for the specific system being serviced.