Technical Specifications

Why Does a Pneumatic Component Need a Breather?

An enclosed cavity can develop a pressure difference as internal volume, temperature or operating conditions change. A breather provides a route for air exchange so that the housing does not act like an unintended sealed chamber.

On a suitable valve or actuator accessory, the vent can prevent trapped air from affecting movement or operation. It must be installed only where the circuit is designed to vent; not every threaded port is a breather port.

Why Use a Brass Breather?

A brass threaded body provides a compact, machinable connection suitable for many industrial pneumatic assemblies. It also avoids aluminum-on-aluminum thread contact when fitted to an aluminum housing, although compatibility and corrosion conditions must still be considered.

The vent pathway must stay clear. Dirt or oil contamination can restrict air exchange, while unsuitable environments may require additional filtration or protection selected for the application.

A Breather Is Not a Safety Relief Valve

A breather is not designed to set a regulated pressure or act as a certified overpressure safety device. Do not substitute it for a relief valve, regulator or dedicated exhaust-control component.

Match the 10-32 UNF connection and verify that the receiving port is specifically intended for pressure equalization or venting.

Typical Applications

• Designed vent points on pneumatic components
• Valve housings or enclosures requiring air exchange
• Industrial automation assemblies with dedicated breather ports