John Guest Black Union Elbow, 3/4" CTS

The John Guest Black Union Elbow, 3/4" CTS, from Reliance Worldwide Corporation turns a 3/4" CTS pipe run a clean 90 degrees. Part of the UV-resistant black PEI Twist and Lock range, it was developed for the most common water filtration and treatment applications, including point-of-entry filter housings and water conditioning, while also serving plumbing repair, remodel, marine, and RV installations.

This elbow lets you route 3/4" pipe around corners and obstacles without strain on the line or the kinking that flexible pipe can suffer when forced into a tight bend. Manufactured from high-quality engineered PEI plastic with EPDM O-rings, it delivers a leak-free connection, and the Speedfit push-in system assembles in seconds with no tools, saving considerable installation time compared with soldered or crimped fittings.

Features

• Push-fit connections for fast, tool-free installation
• Suitable for use with PEX, CPVC, and copper pipe
• Rated for hot and cold water and hydronic heating
• Lead-free and non-toxic
• Truly demountable without damage to pipe or fitting
• Corrosion-free with no scale build-up and no risk of fire or flames

The black UV-resistant body makes this elbow a strong choice for exposed runs where standard fittings could degrade under sunlight over time. Since installation needs no torch, there is no fire risk near finished surfaces or in tight spaces, a genuine safety benefit on remodel and retrofit jobs. To install, cut and deburr both pipe ends, then push each 3/4" CTS pipe fully into the elbow until it seats, confirming the grip with a gentle tug. The connection is fully demountable, so reconfiguring the layout later is just as quick as the first install, and the fitting can be reused. For reliable right-angle turns in point-of-entry water treatment plumbing, this John Guest black union elbow performs dependably across a wide range of applications.

Within the JG Twist and Lock range, this union elbow pairs with the matching black union connectors and male adapters built on the same engineered PEI platform, letting you assemble a complete point-of-entry layout from one coordinated family. Its ability to turn larger 3/4" pipe cleanly, without a torch and with full demountability, makes it a practical choice for both new whole-house installations and retrofits around existing equipment.