Brasscraft 68-6-4X Reducing Adapter 3/8x1/4 Compression Mnpt

Product Description

The BRASSCRAFT 68-6-4X is a reducing adapter from the 68 Series, designed to connect a 3/8-inch compression fitting to a 1/4-inch male NPT threaded port. Machined from brass, it provides a durable, leak-resistant transition between two different connection types and sizes. This fitting is a standard plumbing component used when reducing line size or adapting compression tubing to a threaded male fitting. Licensed plumbers and HVAC technicians install this type of adapter during new construction, system retrofits, and appliance connections.

The 68-6-4X fits residential and light commercial plumbing and HVAC applications where a compression-to-MNPT transition is required. Common scenarios include connecting copper or plastic supply tubing to gas valves, water supply valves, or other threaded ports that require a reduced line size. It is suited for use in tight spaces where a compact, reliable fitting is needed.

Key Features

• Reduces from 3/8-inch compression to 1/4-inch MNPT in a single fitting
• Brass construction provides corrosion resistance and long service life
• Compression inlet eliminates the need for soldering on the tubing side
• Male NPT thread conforms to standard tapered thread specifications for a secure seal
• Compact form factor suits confined installation spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial plumbing and HVAC systems requiring a 3/8-inch compression to 1/4-inch MNPT reducing adapter.

Installation Notes

Installation is performed by a licensed plumber or HVAC technician. Shut off the water or gas supply and relieve system pressure before disassembling any fittings. Apply thread sealant tape or compound to the male NPT threads before assembly; do not apply sealant to the compression side. Hand-tighten the compression nut first, then snug with a wrench — do not overtighten, as brass threads can be damaged by excessive force.

Technical Specifications

• Inlet Size: 3/8 inches (Compression)
• Outlet Size: 1/4 inches (MNPT)
• Connection Type: Compression x Male NPT
• Material: Brass
• Series: 68 Series

Standard Information

• Brand: BRASSCRAFT
• Manufacturer Part Number: 68-6-4X