A manifold is a wider and/or larger pipe or channel, into which smaller pipes or channels lead,^[1] or a pipe fitting or similar device that connects multiple inputs or outputs for fluids.

Manifolds

Engineering

Types of manifolds in engineering include:

Exhaust manifold

An engine part that collects the exhaust gases from multiple cylinders into one pipe. Also known as headers.

Hydraulic manifold

A component used to regulate fluid flow in a hydraulic system, thus controlling the transfer of power between actuators and pumps

Inlet manifold (or "intake manifold")

An engine part that supplies the air or fuel/air mixture to the cylinders

Scuba manifold

In a scuba set, connects two or more diving cylinders

Vacuum gas manifold

An apparatus used in chemistry to manipulate gases

Also, many dredge pipe pieces.

Biology

In biology manifolds are found in:

• Cardiovascular system (blood vessel manifolds, etc.)
• Lymphatic system
• Respiratory system

Other fields

Manifolds are used in:

• HVAC
• Pipe organ
• Plumbing