Festo HE-3-QS Series Pneumatic Manual Control Valve, 153478, Inlet Male/Female, Outlet Male/Female

This pneumatic manual control valve provides manual actuation for compressed Air systems in industrial automation. It is a three-way, manually operated shut-off device designed for in-line installation and offers bistable switching for controlled flow direction. Constructed from reinforced polybutylene terephthalate together with aluminium and brass components, it is intended for use where precise manual control of pneumatic actuators or circuits is required within standard industrial temperature ranges.

• Operates over -0.95 bar to 10 bar for broad pressure range handling
• Rated for ambient temperatures from 0°C to 60°C for standard environments
• Soft sealing reduces leakage and ensures smooth switching
• Direct pilot control allows immediate response to manual actuation
• In-line design with through-hole simplifies panel or pipe integration

• Suitable for manual isolation of pneumatic actuators on assembly lines
• Ideal for switching pilot lines in pneumatic control panels
• Used for diverting compressed Air between tool stations in workshops
• Can be used for manual testing of pneumatic sensors and valves

It may be mounted in any position and is intended for in-line installation with a through-hole for secure fixing.

It is specified for compressed Air to ISO 8573-1:2010 and permits lubricated operation when required.

The valve’s configuration does not provide flow control of exhaust Air and functions without a dedicated exhaust modulation feature.

Actuation is manual with direct control and a piston spool design providing non-reversible flow.