7/8 inch x 3/4 inch Brass Compression Reducer Reducing Adapter Lead-Free OD x Male

7/8 inch x 3/4 inch Brass Compression Reducer Adapter – For Reliable Transitions Between Tubing Sizes

The 7/8 inch x 3/4 inch Brass Compression Reducer Adapter is manufactured for use in compression-style plumbing systems where a secure size reduction is required between dissimilar tubing diameters. This fitting enables a transition from 7/8 inch OD tubing to 3/4 inch OD tubing without the need for soldering or specialized joining techniques, making it ideal for mechanical connections in confined or finished spaces.

Produced from lead-free brass to meet potable water regulations, this reducer adapter supports compliance with ANSI and NSF standards while offering mechanical durability, corrosion resistance, and ease of installation in both new and retrofit applications.

Performance Characteristics

• ✅ Machined Brass Construction – Provides excellent tensile strength and corrosion resistance in potable and non-potable systems.
• ✅ Lead-Free Composition – Compliant with NSF/ANSI 372 for low-lead content, suitable for drinking water systems.
• ✅ Compression-to-Compression Transition – Designed for tubing systems using mechanical compression nuts and ferrules.
• ✅ Stable Under Pressure – Maintains seal integrity under typical working pressures for residential and light commercial water distribution.
• ✅ Minimal Installation Footprint – Allows tight installations in valve boxes, fixture outlets, and wall cavities.
• ✅ Disassemblable Joint – Supports future maintenance or component replacement without pipe damage.

Application Scope

Used extensively in sink supply lines, toilet shut-off connections, and other water supply assemblies where downsizing from 7/8 inch OD riser to 3/4 inch OD tubing is required. This fitting is applicable in both copper and cross-linked polyethylene (PEX) installations when used with appropriate inserts and supports per manufacturer guidance.

Installation Notes

Use compression nuts and brass or copper ferrules matched to tube material. Tighten to specification using two wrenches to avoid overtightening. Ensure cut tubing ends are clean, square, and free of burrs to prevent gasket failure or uneven sealing pressure. Do not use thread sealant or tape on compression threads.

Material Insight

Brass offers long-term reliability in potable water service due to its resistance to dezincification and bacterial colonization. Its workability and compatibility with dissimilar metals make it a practical choice for mixed-material plumbing configurations.

The 7/8 inch x 3/4 inch Brass Compression Reducer Adapter is a dependable component for mechanical transitions in water distribution systems. Its precision-machined construction and compatibility with common supply tubing make it suitable for use in contractor-grade installations where accuracy and performance are required.