# Manifold — Common valve or distribution base

> Source: https://rodlesspneumatic.com/resource-center/pneumatic-glossary/manifold/
> Language: en-US
> Category: Valves & circuits

## Definition

Common valve or distribution base: Base that shares supply and exhaust or distributes ports among multiple stations. Confirm station pitch, electrical architecture, total flow, and expansion limits. Read the applicable product data and technical standard before treating a catalog value as interchangeable.

## Key facts

- **Term:** Manifold
- **Full form:** Common valve or distribution base
- **Selection effect:** Confirm station pitch, electrical architecture, total flow, and expansion limits.

## Manifold: definition and engineering context

Common valve or distribution base. Base that shares supply and exhaust or distributes ports among multiple stations.

The term belongs to the valves & circuits context. Its exact limits can depend on the cited standard, catalog convention, unit system, reference state, and component configuration.

## Why Manifold affects pneumatic selection

Confirm station pitch, electrical architecture, total flow, and expansion limits.

- Silencer: Backpressure can reduce cylinder speed and valve performance.
- 3/2 valve: Common for single-acting actuators and on/off air functions.
- 5/2 valve: Common for double-acting cylinders.
- 5/3 valve: Specify closed, pressure, or exhaust center; center function changes actuator behavior.

## How to evaluate Manifold in a catalog or replacement project

Read the value together with its unit, test basis, operating pressure, temperature, circuit state, and manufacturer definition.

For replacement work, compare the complete datasheet and drawing. A matching abbreviation or nominal size does not by itself prove functional or dimensional interchangeability.

- Pneumatic exhaust muffler: Porous or baffled element used to reduce exhaust noise.
- Three-port, two-position valve: Directional valve with three ports and two switching states.
- Five-port, two-position valve: Directional valve with pressure, two working, and two exhaust ports.
- Five-port, three-position valve: Directional valve with a defined center state.

## What to verify before selection

- Confirm station pitch, electrical architecture, total flow, and expansion limits.
- Backpressure can reduce cylinder speed and valve performance.
- Common for single-acting actuators and on/off air functions.
- Common for double-acting cylinders.

## Common mistakes

- Treating Manifold as a universal definition without checking the manufacturer or standard context
- Mixing gauge and absolute values, incompatible units, or different reference conditions in one comparison
- Selecting a component from the term or nominal value alone without checking the complete operating point and drawing

## Frequently asked questions

### What does Manifold mean in pneumatics?

Common valve or distribution base. Base that shares supply and exhaust or distributes ports among multiple stations.

### Why does Manifold matter when selecting a component?

Confirm station pitch, electrical architecture, total flow, and expansion limits.

### Can Manifold values be compared directly between catalogs?

Only after the unit, reference condition, test method, operating point, and manufacturer definition have been reconciled.

## Technical references

- [ISO 5598:2020](https://www.iso.org/standard/67985.html): Provides the international fluid-power vocabulary used to interpret pneumatic terminology.
- [ISO 1219-1:2012](https://www.iso.org/standard/60184.html): Defines graphical symbols and circuit-documentation principles for fluid-power systems.