Nibco PRESCOUP3 Copper Press Coupling with Stop 3 in

Product Description

The NIBCO PRESCOUP3 is a 3-inch copper press-by-press coupling with an integrated stop, designed for use in pressurized water and hydronic piping systems. The stop feature positions pipe consistently, ensuring full insertion depth before the press tool is applied. This fitting suits potable water, heating, and cooling distribution lines where soldering is not practical or permitted. Licensed plumbers and pipefitters install this fitting using a compatible press tool and jaw set sized for 3-inch copper connections. No open flame is required, reducing fire risk in occupied or combustible spaces.

This coupling is suited for residential and light commercial plumbing and mechanical systems. It is used when joining straight runs of copper tubing in domestic water supply, hydronic heating loops, and chilled water distribution. The press connection system makes it a preferred choice in retrofit and renovation work where torch access is restricted. Installation is fast relative to sweat fittings, making it efficient for high-volume rough-in work.

Key Features

• 3-inch press-by-press end connections for tool-based, flame-free joining
• Integrated stop ensures consistent pipe insertion depth before pressing
• Copper construction provides corrosion resistance in water and hydronic service
• Compatible with standard press tools and 3-inch copper press jaw sets
• Eliminates open-flame requirements, reducing fire hazard in sensitive work areas

Compatibility

Designed as an OEM-style press fitting for use with 3-inch copper tubing in residential and commercial plumbing and hydronic piping systems.

Installation Notes

Installation requires a calibrated press tool with the correct 3-inch copper jaw or ring set. Shut off and depressurize the system before cutting into existing lines. Deburr and clean pipe ends before insertion to ensure a leak-free press joint. Work must comply with applicable local plumbing codes and ASME B16.18 or B16.22 standards as required by the authority having jurisdiction.

Technical Specifications

• Connection Size: 3 inches
• Connection Type: Press x Press
• Material: Copper
• Stop Feature: Yes

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: PRESCOUP3