Nibco PRESCOUP4 Copper Press Coupling with Stop 4 in

Product Description

The NIBCO PRESCOUP4 is a copper press x press coupling with stop, designed for joining copper tubing in pressurized plumbing and hydronic systems. The integral stop positions the tubing consistently for repeatable press connections without soldering. At 4 inches, this fitting suits larger-diameter runs found in commercial plumbing, mechanical rooms, and high-flow hydronic distribution systems. A licensed plumber or pipefitter installs this fitting using a compatible press tool and jaw set, eliminating open flame from the connection process.

This coupling is suited for commercial and residential applications where flame-free joining is required or preferred. It is used in potable water supply, hydronic heating and cooling distribution, and fire suppression pre-work where copper press fittings are specified. The press x press end configuration accepts standard copper tubing on both ends, making it a straightforward in-line repair or extension fitting for 4-inch copper pipe systems.

Key Features

• Press x press end configuration for flame-free, tool-pressed copper connections
• Integral stop ensures consistent tubing insertion depth on both ends
• 4-inch size suits commercial plumbing and large-diameter hydronic systems
• Copper construction provides corrosion resistance in water and hydronic fluid service
• Eliminates soldering, reducing labor time and open-flame risk on the job site

Compatibility

Designed as an OEM-style press fitting for use with standard 4-inch copper tubing in press-fit plumbing and hydronic piping systems. Compatible with standard press tools and jaw sets sized for 4-inch copper press fittings.

Installation Notes

Installation requires a calibrated press tool with the correct jaw or ring for 4-inch copper press fittings. Shut off and depressurize the system and drain the line before making the connection. Ensure tubing is cut square, deburred, and fully seated against the internal stop before pressing. Work must comply with applicable local plumbing codes and IPC requirements for press-fit copper fittings.

Technical Specifications

• Material: Copper
• Connection Type: Press x Press
• Size: 4 inches

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: PRESCOUP4