Aqualine SCU-3-LF Brass Compression Coupling 1in Cts

Product Description

The AQUALINE SCU-3-LF is a brass compression coupling designed to join copper tubing or iron pipe in potable water and plumbing systems. It accepts 1 inch CTS (copper tube size) or 3/4 inch IPS (iron pipe size) connections, giving installers flexibility across two common pipe standards without switching fittings. The compression design creates a secure, leak-resistant joint without soldering or special tools. At 0.73 pounds, it is a compact, durable fitting suited for tight spaces and retrofit work. Licensed plumbers and experienced plumbing technicians are the primary installers of this fitting.

This coupling is used in residential and light commercial plumbing applications where copper tubing or threaded iron pipe must be joined or repaired. Its dual-size compatibility — 1 inch CTS or 3/4 inch IPS — makes it a practical choice for service and repair scenarios where the existing pipe standard may vary. Typical install locations include water supply lines, in-wall or under-slab repairs, and mechanical room piping where a flame-free connection method is required or preferred.

Key Features

• Accepts 1 inch CTS or 3/4 inch IPS pipe for cross-standard compatibility
• Brass construction for corrosion resistance in potable water service
• Compression-style connection — no soldering, torch, or flux required
• Lead-free (LF) designation suitable for drinking water systems
• Compact and lightweight at 0.73 pounds

Compatibility

Designed as an OEM-style compression fitting replacement compatible with 1 inch CTS or 3/4 inch IPS pipe in standard residential and commercial potable water plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off the water supply and depressurize the line before installation. Ensure pipe ends are cut square, deburred, and clean before seating the compression nut and ferrule. Do not overtighten compression fittings, as this can deform the ferrule and cause leaks.

Technical Specifications

• Connection Size (CTS): 1 inch
• Connection Size (IPS): 3/4 inch
• Connection Type: Compression
• Material: Brass
• Lead-Free: Yes
• Weight: 0.73 pounds
• UPC: 843687100805

Standard Information

• Brand: AQUALINE
• Manufacturer Part Number: SCU-3-LF