Guest Ball Vlv, 1/4 Tube, Straight

The John Guest Ball Valve, 1/4" Tube, Straight, from Reliance Worldwide Corporation puts an inline shut-off right in your tube run. With push-fit 1/4" tube ports on both ends and a quarter-turn handle, it lets you stop and start flow instantly, a must-have for servicing reverse osmosis and filtration systems without draining the entire setup.

An inline shut-off valve is one of the most useful additions to any point-of-use water system. It lets you isolate a filter cartridge, membrane, or downstream component for maintenance while keeping the rest of the system intact, which saves time and avoids the mess of draining a whole circuit. The straight body drops cleanly into an existing 1/4" run without rerouting.

Key Features

• Connection: Tube x Tube, both ends 1/4"
• Straight inline ball valve with quarter-turn handle
• Corrosion-resistant polypropylene construction
• Push-in collets grip and seal each tube automatically
• Tool-free installation, fully demountable
• Positive on/off control for quick isolation

To install, cut both tube ends square and free of burrs, then push each fully into a valve port until it seats past the collet. The internal O-rings seal each connection automatically, and a gentle tug confirms the grip on both sides. To control flow, turn the handle a quarter-turn: inline with the body for open, crosswise for closed. When servicing is finished, reopen the valve and the system returns to normal operation. Because polypropylene resists corrosion and the chemicals in treated water, the valve performs reliably over years of service without scaling or rusting, and the push-fit connections can be taken apart and remade as needed. Reliable, easy to operate, and matched to standard 1/4" tubing, this John Guest straight ball valve is an essential control component for water treatment plumbing.

Within the John Guest range, this straight valve integrates with the unions, tees, elbows, and connectors that share the same collet system, so you can drop isolation into any point of a layout without rerouting. Fitting a shut-off ahead of each serviceable component is a smart design habit, turning filter and membrane changes into quick, contained jobs rather than full-system shutdowns that risk spills and downtime.