About Stop Valves

Stop valves, also known as water turn-off valves, supply stops, or shut-off valves, are small but essential components in nearly every plumbing system. Installed near sinks, toilets, dishwashers, faucets, and other plumbing fixtures, stop valves allow water flow to be temporarily interrupted without shutting down the entire home or building water supply. They are invaluable for repairs, fixture replacement, maintenance, and emergency shut-offs.

At Plumbingsell, we offer a wide range of stop valves, including angle stop valves and straight stop valves compatible with modern plumbing systems using PEX, copper, CPVC, PVC, and plastic pipe connectors. Whether you are a contractor, maintenance professional, or DIY homeowner, our selection ensures you get a reliable, code-approved shutoff solution at competitive pricing.

What Is a Stop Valve?

A stop valve is a localized water shut-off device that controls water flow to a single plumbing fixture. Instead of shutting off the main system, a stop valve isolates only the fixture it serves. This is especially useful for sinks, toilets, laundry units, icemakers, or appliance supply lines.

Stop valves are typically offered in two common flow orientations:

• Angle Stop Valves – Designed for water lines exiting the wall, with inlet and outlet at a 90-degree angle.
• Straight Stop Valves – Used when the water line comes up through the floor, with inlet and outlet aligned straight through.

Both types are equally effective and widely used in residential and commercial applications.

Stop Valve Styles & Options

Stop valves come in different styles to match your plumbing layout, shut-off needs, and installation preferences. At Plumbingsell, you'll find options designed for convenience, durability, and long-term performance.

• Multi-Turn Stop Valve — Traditional turning mechanism requiring multiple rotations to open or close. Allows gradual shutoff to reduce water hammer, uses a stem and washer system, and is common in long-term residential installs and classic plumbing upgrades.
• Quarter-Turn Ball Stop Valve — Opens and closes with a 90-degree turn for fast water control. Provides a clear on/off position, uses a solid brass or stainless steel ball mechanism, and is preferred by professionals for its durability, ease of operation, and reduced maintenance needs.

Shop Stop Valves at Plumbingsell

Whether you're upgrading an old shut-off valve, installing a toilet supply stop, or outfitting an entire renovation, Plumbingsell has the water valves, supply stop valves, angle stop valves, shutoff valves, and waterline valve options you need—backed by competitive pricing, bulk availability, and fast delivery.

Browse our complete collection of stop valves and order with confidence.