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What is an Angle Valve? Meaning, Working, Types, Use

Angle shutoff valve

The angle valve is one of the most common and a plumber’s favorite in modern plumbing systems. Given its immense popularity, you may want to know what it is, how it works, or even when and where to use it. That’s what this article is all about.

What is an Angle Valve? Angle valve Definition

The angle valve is a stop or control component used by plumbers and other professionals to shut off lines or regulate their flow. Compact and versatile, it’s also one of the most used valve types in modern plumbing systems.

This no-return valve is also valuable in industrial systems requiring flow stoppage or control and involving various media types such as water, air, and chemicals..

The typical valve of this type features a triangular design where the inlet and outlet ports are at an angle to each other, usually perpendicular or at right angles.

In addition to opening and closing mechanism variations, this valve can be in different configurations. It can be a one-way, two-way, three-way angle valve, etc.

Parts of an angle valve
Parts of an angle valve
Resource: https://terrylove.com/forums

Angle Valve Parts

Different components make up an angled non-return valve. Although these can vary depending on the type of valve, the general construction features these main parts:

Seat

The angle valve seat is the part that provides a seal when the valve closes. It can be different materials. Mostly, it’s plastic and PTFE in particular. This material is wear-resistant and has other benefits that help it produce an effective seal.

Stem

The stem connects to the handle on one side and the opening and closing component on the other. In a gate angle valve, this part is the threaded part that connects to the rotary handle on the upper side of the valve.

Body

The body is the housing that encloses all parts except the handle. Manufacturers may use different materials for this part. Standard options include brass, stainless steel, PVC, cast iron, bronze, and carbon steel.

Using an angle shutoff valve in a plumbing system
Using an angle shutoff valve in a plumbing system
Resource: https://forums.quattroworld.com

How Does an Angle Valve Work

The valve uses a twist handle or lever to control, shut off, or stop flow. It can also be an oval knob that you rotate open or close the valve. Although designs vary, most valves of this type are quarter-turn valves. The typical angle valve operation is as follows:

  • The valve inlet port connects to the supply, while the other port connects to a fixture (sink, shower, etc.) or an appliance such as a washing machine.
  • An on/off component (globe, gate, etc.) makes contact with the valve seat, sealing it to prevent flow and vice versa
  • When the valve is open, the on/off part moves away from the seat, and media flows through the valve
  • In a pressure-reducing angle valve, partially turning the on/off lever/knob raises or lowers the flow rate and pressure
  • In a stop or shutoff valve, the lever or knob is twisted or rotated to stop the flow
Angle valve for toilet hand spray and other pipes
Angle valve for toilet hand spray and other pipes
Resource: https://www.youtube.com/watch?v=CFTqQ9KByVc

Angle Valve Function

In a plumbing system, the valve either controls or shuts off flow. When used to control flow, it regulates pressure. During shut off, it stops the flow entirely and is called a stop or shut off type.

Shut Off Angle Valve

When installed in a plumbing or other line, a shutoff valve of this type allows the supply to be disconnected and is also called a stop angle valve. It provides fast disconnection in an emergency, such as a leaking or burst pipe, preventing a flood, hazard, and wastage.

You can also use it to stop the flow for maintenance or repair sessions. The valve in this application lets you isolate the fixture undergoing repair, leaving the main supply intact.

Angle Control Valve

An angle control valve helps regulate flow in a plumbing line. You can use it to decrease pressure in high-pressure lines and determine the amount of water from a pipe or faucet.

An example of this application is in the above image. Here, the control valve, when installed in the toilet or bathroom pipe, helps create a jet spray in hand showers.

Different types of angle valves
Different types of angle valves
Resource: https://www.youtube.com/watch?v=lZFgJYzmgaU

What Type of Valve Is an Angle Valve

Angle valve manufacturers design different fitting types for various applications or plumbing systems. These are mainly classified based on the kind of opening and closing mechanisms and include the following: ball, gate, and globe angle valve.

Angle Ball Valve

As the name implies, the ball-type valve uses a ball to open and close. Turning the handle 90 degrees opens and closes the valve—a 90° or quarter-turn valve best suits emergency shutoffs requiring fast-acting.

Angle Gate Valve

The angle gate valve features a ‘gate”, a disc that rests on a seat inside the valve, with a threaded part called the stem to move it into the seal and away. These valves can withstand higher pressures and are best suited for industrial use.

To close a valve of this type requires a 360-degree turn. Angle gate valves find application in large installations such as oil and gas or wastewater systems. Here, the valve helps isolate lines for maintenance and other reasons.

Angle Globe Valve

The globe angle valve relies on the action of a plug mechanism for on/off. Like the gate type, it requires a 360 turn to open or close. Its main benefit lies in the ability to produce a reliable seal, making it suitable for applications requiring lighter or less dense media.

These fittings are also classified using their connection methods. In this category, we have the following types of fittings: soldered, threaded, compression, push-to-connect, and those you attach to CPVC pipes using a kind of cement.

Angle valve for sink faucet
Installing angle shutoff valves under the sink
Resource: https://www.youtube.com/watch?VIh8Li4uUFk

What is an Angle Valve Used for

Angle valve application spans many industries and environments, from the plumbing systems of homes or commercial places to industrial plant applications. Here is a look at the most common of these uses and the reasons for their preference over other valves.

In Plumbing

The angle plumbing valve is designed for use in water lines and systems, whether potable or non-potable. You can use these systems to control the flow or shut off a plumbing line for repairs. Common uses include:

  • For showers with hot and cold water mixers
  • As compact shutoff and flow control fittings for sink faucets
  • For geyser hot and cold water lines
  • For wash basin pipes

Industrial

The industrial valve is identical to those of homes, only that it’s a heavy-duty version of them. For example, it can be an angle valve with flange connections for easy and secure connections for high-pressure lines or systems.

In addition to being heavy-duty, industrial valves of this type will either stop or regulate the flow of media. Examples of application industries are:

  • Oil and gas
  • Waste water systems
  • Manufacturing plants

Conclusion

The angle valve is an essential type of valve in many industries. With application as either a shutoff or flow regulatory component, it provides versatility and reliability benefits. These valves are also built in various designs and other features, giving you many options for your specific use or project.

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