Bolt these valves to ANSI flanges—they meet ASME dimensional standards. They have a plastic body and a seal that withstand aggressive and corrosive solutions in chemical-processing applications.

PVC valves are the standard choice for most mild chemical processing systems. CPVC valves withstand higher temperatures than PVC valves, so they work well with systems that connect to a heater. Valves with a short lever handle are good for low-clearance lines because their lever takes up less space. Valves with flanged unions are easy to install and remove without disturbing your piping, making them ideal for lines that need frequent maintenance or cleaning. Bolt the flanged fitting to the pipe flange. Install and remove the valve by turning the union fitting.

Full-port valves do not restrict flow. Valves with a vented ball prevent pressure buildup from gases emitted by harsh chemicals, such as hydrochloric acid.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

Made of plastic, these valves are a lightweight alternative to metal valves. Union fittings connect the flanges to the valve—with a quick turn, you can install and remove the valve without having to bolt and unbolt the flange each time. This is useful for lines that require frequent maintenance and cleaning. Bolt the flanges to ANSI flanges. They meet ASME standards for dimensions, material, and pressure-temperature rating. All valves are full port, so they do not restrict flow.

Use CPVC valves for general purpose water applications.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

Also known as wafer ball valves, these combine the slim body of a butterfly valve with the high flow rates of a flanged ball valve. Bolt these valves to ANSI flanges—they meet ASME standards for dimensions, material, and pressure-temperature rating. They are full port, so they do not restrict flow.

316 stainless steel valves are more corrosion resistant than steel valves.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

Flexible joints keep these valves tightly sealed during pressure changes or vibrations from heavy machinery. Also known as gate valves, they gradually open and close to prevent system damage from sudden flow changes. They have a rubber-coated gate that compresses against the valve for a long-lasting, leakproof seal. They’ll seal tightly even when installed vertically, when there’s low back pressure, or when the liquid contains solids and debris. Made of ductile iron, these valves are stronger than cast iron valves and resist cracking from pressure changes. The body is coated with epoxy to protect against corrosion. They meet at least one American Water Works Association (AWWA) standard for reliable and safe performance in water supply systems.

These valves fit well in tight spaces since the stem doesn’t rise when they open. Their flanged stem housing bolts in place for easy disassembly for maintenance and repairs. Use a valve wrench to open and close these valves. Because they require a wrench, they can’t be opened accidentally when bumped or snagged.

Valves that meet NSF/ANSI 61 are safe to use with drinking water systems.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

FM-approved, these valves are often used to isolate sections of your facility’s water supply for fire suppression and protection. They bolt to flanges for easier installation and removal than threaded or weld-on valves. This makes them a great choice if you have to clean and maintain your line frequently. Also known as gate valves, they open and close gradually to prevent sudden starts and stops of flow that could damage your system. Epoxy coated, these valves resist corrosion. They’re bright red, so they’re easy to identify as fire valves.

Their rubber-coated gate, also known as a resilient wedge, compresses against the valve for a long-lasting, leakproof seal. It seals tightly even if you install these valves vertically, or if there’s low back pressure. For easy disassembly during maintenance, they have a flanged stem housing that bolts in place. However, the housing makes these valves heavier and larger than valves with a threaded or welded stem housing.

Valves with a wheel handle open and close with multiple turns for controlled, shock-resistant flow. Wrench-operated valves are the best choice for hard-to-reach locations, such as underground or inside a manhole. Operate them from a distance with a valve wrench. You can also open and close them with a fire indicator post.

Valves with a nonrising stem keep the handle in the same position whether they’re open or closed. They're often used underground and in low-clearance locations. Valves with a rising stem lift the handle as they open and lower it as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem. This makes them good for critical lines and lines that need to be opened and closed frequently.

Ductile iron valves are stronger and more durable than cast iron valves. They’ll handle greater pressure changes without cracking.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.