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The MIDLAND INDUSTRIES R30300 is a 1-bolt patch clamp designed for temporary or permanent repair of damaged or leaking pipe sections. Built with a 301 stainless steel body and a neoprene gasket, this clamp seals around 3-inch pipe and withstands operating temperatures up to 180 degrees F. The single-bolt design allows for fast installation with minimal hardware, making it a practical field repair solution for plumbers and pipefitters working on pressurized or gravity-flow piping systems. It meets ASTM A47 Grade 32610, Grade 60, and ASTM A307 standards, confirming material and fastener quality for reliable service in demanding environments.
This patch clamp is suited for residential and light commercial plumbing repair applications where a 3-inch pipe section has cracked, corroded, or developed a pinhole leak. It is commonly applied to drain, waste, and vent lines as well as supply piping where a fast, low-tool repair is needed. The stainless steel construction resists corrosion in wet and humid environments, and the neoprene gasket conforms to the pipe surface to create a reliable seal. Licensed plumbers and pipefitters are the primary installers in both new repair and maintenance scenarios.
Designed as an OEM-style patch repair clamp for 3-inch pipe in residential and commercial plumbing systems.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off water supply and relieve system pressure before applying the clamp. Clean and dry the pipe surface at the repair area to ensure proper gasket contact and seal integrity. Do not over-torque the bolt, as this may damage the neoprene gasket or distort the clamp body.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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