Midland Industries 77436 Wrot Copper Sweat Cap 1-1/2 in

Product Description

The MIDLAND INDUSTRIES 77436 is a wrot copper sweat cap designed to terminate the end of a 1-1/2 inch copper tube in plumbing and hydronic piping systems. Rated to 400 psi and suitable for operating temperatures from 32 to 200 degrees F, this fitting handles standard domestic water, heating, and light commercial applications with consistent reliability. The wrot construction - wrought copper shaped under pressure rather than cast - delivers a denser grain structure and tighter dimensional tolerances than cast fittings. Licensed plumbers and pipefitters install this cap where a copper run-end must be sealed permanently or where a branch stub requires capping during pressure testing.

This sweat cap is suited for residential and light commercial copper piping systems using 1-1/2 inch tube. Common install scenarios include capping unused branch outlets, sealing off decommissioned lines, and blanking pipe ends during rough-in inspections or pressure tests. The soldered end connection makes it compatible with standard Type L and Type M copper tubing per ASTM B88. No threaded adapters or transition fittings are required.

Key Features

• Wrot copper construction for tighter tolerances and higher density than cast alternatives
• 1-1/2 inch sweat (solder) end connection for direct copper-to-copper joint
• 400 psi pressure rating suitable for standard domestic and commercial water lines
• Operating temperature range of 32 to 200 degrees F covers typical potable water and hydronic service
• Compact profile: 1.75 inches height, 1.7 inches length, 1.2 inches width
• Lightweight at 0.155 pounds, minimizing added load on piping runs

Compatibility

Designed as an OEM-style sweat cap for 1-1/2 inch copper tube in standard plumbing, hydronic heating, and light commercial piping systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter following IPC and applicable local plumbing codes. Shut off the water supply and depressurize the line fully before cutting or fitting. Clean the tube end and fitting cup with emery cloth or a fitting brush, apply flux, and sweat-solder the joint using lead-free solder per code requirements. Do not apply heat directly to the fitting cup for extended periods, as overheating can burn flux and result in a void joint.