Valve Manifolds | McMaster-Carr

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How to Measure Threaded Pipe Size

Modular Air Directional Control Valves
with Air and Electrical Manifolds

Mix and match valve styles on one manifold to meet your control needs. Mount multiple valves to a manifold to reduce piping requirements and create multiple actions from a single pressure input.

Modular Air Directional Control
Valves with Air Manifolds

Mount valves to a single-station base or to a manifold, which allows a single pressure source for multiple valves, then add or remove valves as your needs change.

Two-Speed Two-Action Electrically
Operated Air Directional Control Valves

Often used to extend and then retract a cylinder at different speeds, these valves create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Also known as 5/2 valves, they actuate when voltage is applied to the electrical connection.

Two-Speed Two-Action Electrically Operated Air
Directional Control Valves with Exhausting Shut-Off

In the off position, these valves exhaust all air pressure, allowing the equipment to return to the neutral position. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Apply voltage to the electrical connection to actuate.

Two-Speed Two-Action Electrically Operated
Air Directional Control Valves with Full Shut-Off

These valves close all ports in the off position to stop equipment in a locked position with air pressure holding it in place. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Apply voltage to the electrical connection to actuate.

Single-Action Electrically Operated
Air Directional Control Valves

These valves create one action, such as extending a cylinder. Apply voltage to the electrical connection to actuate. They're also known as 3/2 valves.

NFPA Valve-Mounting Blocks

NFPA valve-mounting blocks have standardized valve mounting patterns to keep hydraulic lines compact and organized.

Pipe and Pipe Fittings

Right-Angle Flow Rectangular Manifolds

Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers.

Dual-Section Right-Angle
Flow Rectangular Manifolds

These manifolds have two separate sections inside, so you can run two different substances through them without worrying about them intermixing. Also known as headers.

Cleaned-and-Bagged Right-Angle
Flow Rectangular Manifolds

Designed for ultra-clean environments, these manifolds are cleaned, dried, and vacuum sealed in plastic to prevent dirt and moisture from contaminating the inside. Use them to distribute air or fluid to multiple locations from a single supply source. Also known as headers.

Straight-Flow Rectangular Manifolds

Unlike other manifolds, which have an inlet on either end, these have one inlet on the opposite side from the outlets. This design allows air or fluid to follow a straight path, improving flow through your system. Also known as headers.

Low-Profile Square Manifolds

With outlets on the side instead of on top, these manifolds have a lower profile than rectangular manifolds and fit well in cramped spaces. Use them to distribute air or fluid to three locations from a single supply source.

Round Manifolds for Hose Lines

Mount these manifolds on the end of a hose line to distribute air, water, or hydraulic fluid to three locations from a single supply source.

Color-Coded Irregular Hex Manifolds

Use these manifolds with molding equipment to circulate hot and cold water through your line. They have a red side for hot water and a blue side for cold water.

Low-Profile Hex Manifolds

When you’re short on vertical space, these manifolds are a good fit—they have outlets on the side instead of on top, so they have a lower profile than rectangular manifolds. Use them to distribute air or fluid to five locations from a single supply source.

Miniature Hex Manifolds

A great solution when space is at a premium, these manifolds are less than an inch in height, yet allow you to supply up to 12 lines from one distribution point.

Straight-Flow Junction Blocks

Use these junction blocks to organize and separate multiple lines in your system. They have threaded holes that allow air or fluid to flow straight through the block.

Right-Angle Flow Junction Blocks

These junction blocks have threaded holes that allow air or fluid to flow at a 90° angle through the block. Use them to organize and separate multiple lines in your system.

Build-Your-Own Air Hose System

With an easy-to-cut hose and push-to-connect fittings, you can install a compressed air line system in just a few hours.

Manifolds for Hydraulic Jacks

Flow-Adjustment Manifolds for Hydraulic Jacks

Connect up to four rams and a gauge to a pump. Ram connections have flow-adjustment valves to adjust ram speed, or shut it off to temporarily hold a load.

Compact Manifolds for Hydraulic Jacks

Connect up to five rams to a single pump.

High-Pressure Threaded Precision Flow-Adjustment Manifolds

High-Pressure Threaded Precision
Flow-Adjustment Manifolds

Often attached to differential pressure gauges to measure liquid level in tanks, these manifolds have two isolation valves with a pressure-equalizing valve between them. To isolate your differential pressure gauge for maintenance or calibration, shut off flow on both sides and equalize pressure in the manifold. They are rated for at least 6,000 psi. Use with water, oil, air, and inert gas.

Air Conditioner Charging and Testing Manifolds

Digital Air Conditioner Charging
and Testing Manifolds

Monitor refrigerant pressure on an LCD when servicing air conditioning systems.

Air Conditioner Charging and Testing Manifolds

Monitor refrigerant pressure with analog gauges when servicing air conditioning systems.

Flow-Adjustment Valves and Manifolds

Flow-Adjustment Valve
Manifolds for Sealed Systems

A sealed design prevents contamination in dirty and dusty environments.

Flow-Adjustment Valve
Manifolds for Vented Systems

For use in clean environments, these manifolds have multiple air vents that keep pressure balanced.

Oil Manifolds

Deliver an equal amount of oil to multiple lubrication points at once.

Manifolds for Supplied-Air Respirators for Plant Air Lines

Manifolds for Supplied-Air
Respirators for Plant Air Lines

Divert compressed air from a single line to two respirators.