Guest Angle Stop Adptr Vlv, 3/8x3/8x3/8

The John Guest Angle Stop Adapter Valve, 3/8" x 3/8" x 3/8", from Reliance Worldwide Corporation provides a clean, reliable way to tap your cold-water supply for reverse osmosis units, filtration systems, ice makers, and similar point-of-use equipment, without resorting to a leak-prone saddle valve. With a full 3/8" branch outlet, this version suits installations that call for higher flow than a 1/4" tap can deliver.

It installs between your stop valve, riser, and supply line, then offers a dedicated 3/8" push-in tube outlet for your treatment line. This approach is far more dependable than piercing the supply with a saddle valve, which tends to clog, restrict flow, and develop slow leaks over time. By tying into the existing angle stop, you get a robust, serviceable connection that professionals prefer.

Built-In Advantages

• Connection: Male Compression x Female Compression x John Guest Slip tube
• John Guest push-in tube connection on the 3/8" outlet
• Integrated 90-degree shut-off for the branch line
• Swivels for easier positioning in tight spaces
• Replaces the saddle valve entirely
• Corrosion-resistant polypropylene body

To set it up, turn off the water and separate the supply line from the angle stop. Thread the male compression end into the stop valve, connect the riser to the female compression end, and push your 3/8" tubing into the slip outlet until it seats fully. The swiveling body lets you aim the outlet precisely toward your equipment before final tightening, which is a real help in confined under-sink spaces. The integrated shut-off lets you isolate the treatment line for maintenance without affecting the rest of the fixture, so changing a filter or membrane is quick and mess-free. For a professional, no-pierce connection to your water supply that supports higher flow, this John Guest angle stop adapter valve delivers dependable performance.

Choosing the 3/8" outlet over a 1/4" version is worthwhile whenever a system benefits from greater flow, such as larger RO units or multi-stage filters. Like any saddle-valve replacement, this adapter provides a permanent, full-bore tap that will not clog over time, making it the connection method most professionals favor for both new installations and upgrades of failing saddle-valve hookups.