Union Ball Valves | McMaster-Carr

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268 Products

About On/Off Valves

Easy-to-Install Threaded On/Off Valves

For fast installation and removal from pipelines, these valves have a union fitting that disassembles into multiple pieces. They’re for use with water, oil, air, inert gas, and steam.

Easy-to-Install Plastic Threaded On/Off Valves

A threaded union on these valves makes them easy to install and remove without disrupting your line.

Easy-to-Install Socket-Connect
On/Off Valves for Chemicals

Streamline your installation and removal process. These valves give you the leak-tight permanent connection of a socket connect with the ease of fittings that come apart.

Easy-to-Install Threaded
On/Off Valves for Chemicals

For fast installation and removal from pipelines, these valves have union fittings that disassemble into multiple pieces. All have a fluoroelastomer seal and a plastic body that can stand up to aggressive and corrosive solutions in chemical-processing applications.

Easy-to-Install Socket-Connect
On/Off Valves for Drinking Water

Ideal for lines that need frequent maintenance, these valves have union fittings that disassemble quickly for removal. They meet NSF/ANSI 61 for use with drinking water.

Easy-to-Install Plastic Threaded
On/Off Valves for Drinking Water

Disassemble the union fittings on these valves for fast installation and removal from your pipeline. All meet NSF/ANSI 61 for use with drinking water.

On/Off Valves with Push-to-Connect
Fittings for Drinking Water

Made of brass, these valves are more durable than plastic valves. Push tubing into the fittings and an internal gripping ring and O-ring hold it tight—no heat, solder, or flux required. These valves meet NSF/ANSI 61 for use in drinking water systems.

Easy-to-Install Threaded Gradual On/Off Valves

A threaded union on these valves makes them easy to install and remove without disrupting your line.

Union Fittings for Flow-Control Valves

Attach these valve bodies to your actuator to automatically or manually control flow in your line.

Easy-to-Install Plastic Threaded
Flow-Adjustment Valves

A threaded union on these valves makes them easy to install and remove without disrupting your line.

Diverting Valves for Drinking Water

To divert flow between ports in drinking water lines, these valves meet NSF/ANSI 61.

Easy-to-Install Threaded
Diverting Valves for Chemicals

For easy installation and removal from pipelines, all ends on these valves have union fittings that disassemble into multiple pieces. Their fluoroelastomer seal and plastic body can withstand aggressive and corrosive solutions for diverting flow between ports in chemical-processing applications.

Easy-to-Install Threaded Diverting Valves

For easy installation and removal from pipelines, all ends on these valves have union fittings that disassemble into multiple pieces. Use with water. Valves divert flow between ports.

About On/Off Valves

Flow-Control Valves

Easy-to-Install Threaded On/Off Valves

Easy-to-Install Plastic Threaded On/Off Valves

Easy-to-Install Socket-ConnectOn/Off Valves for Chemicals

Easy-to-Install ThreadedOn/Off Valves for Chemicals

Easy-to-Install Socket-ConnectOn/Off Valves for Drinking Water

Easy-to-Install Plastic ThreadedOn/Off Valves for Drinking Water

On/Off Valves with Push-to-ConnectFittings for Drinking Water

Easy-to-Install Threaded Gradual On/Off Valves

Union Fittings for Flow-Control Valves

Easy-to-Install Plastic ThreadedFlow-Adjustment Valves

Diverting Valves for Drinking Water

Easy-to-Install ThreadedDiverting Valves for Chemicals

Easy-to-Install Threaded Diverting Valves

Easy-to-Install Socket-Connect
On/Off Valves for Chemicals

Easy-to-Install Threaded
On/Off Valves for Chemicals

Easy-to-Install Socket-Connect
On/Off Valves for Drinking Water

Easy-to-Install Plastic Threaded
On/Off Valves for Drinking Water

On/Off Valves with Push-to-Connect
Fittings for Drinking Water

Easy-to-Install Plastic Threaded
Flow-Adjustment Valves

Easy-to-Install Threaded
Diverting Valves for Chemicals