Do It Best 401090 Quarter Turn Straight Valve 5/8x3/8 in

Product Description

The DO IT BEST 401090 is a quarter-turn straight shutoff valve designed for residential plumbing applications where reliable, single-motion water shutoff is required. Built with a solid brass body and a chrome-plated finish, this valve connects via compression fittings at a nominal 5/8 x 3/8 inch size. The quarter-turn ball mechanism allows a technician or plumber to fully open or close water flow with a 90-degree handle rotation, reducing service time and eliminating the risk of valve creep common with multi-turn designs. Domestically produced, it is suited for under-sink supply line connections and similar low-pressure service points.

This valve is commonly installed on residential water supply lines feeding sinks, lavatories, and similar fixtures. It is appropriate for applications where a compression inlet connects to a 3/8 inch compression outlet feeding a flexible supply line. The straight valve orientation is used when the supply stub-out and the fixture inlet are aligned on the same axis. Licensed plumbers and experienced DIYers routinely install this type of valve during fixture replacements, remodels, or shutoff upgrades.

Key Features

• Quarter-turn operation provides full open or full closed with a single 90-degree handle rotation
• Solid brass body construction for corrosion resistance and durability
• Chrome-plated finish for a clean appearance in visible under-sink installations
• Compression connection type on both inlet and outlet — no soldering required
• Nominal 5/8 x 3/8 inch sizing fits standard residential supply stub-outs and fixture supply lines
• Domestically produced

Compatibility

Designed as an OEM-style replacement or upgrade shutoff valve for residential plumbing supply lines using compression-style connections at a 5/8 x 3/8 inch nominal size.

Installation Notes

Installation should be performed by a licensed plumber or qualified tradesperson in accordance with local plumbing codes and IPC guidelines. Shut off the main water supply and relieve line pressure before removing the existing valve. Compression fittings require only hand-tight plus approximately one full wrench turn — do not overtighten, as this can deform the ferrule and cause leaks. Inspect the stub-out for corrosion or damage before installing the new valve.