Valves for Panel Mounting - 4/3 Way Valves | Hafner

Hafner 4/3 Valves for Panel Mounting

BA 430 301 is a manually operated pneumatic valve designed for panel mounting with a Ø22 mm hole. The configuration is 4/3, functionally equivalent to a double 3/2 arrangement, with a center exhaust position. This valve is primarily used for controlling two single-acting cylinders or two independent pneumatic signals from a single rotary actuator.

Technical Specifications

• Part Number: BA 430 301
• Port Size: G 1/8”
• Flow Rate: 280 l/min
• Operating Pressure: -0.9…10 bar (per Hafner catalogue)
• Actuation Force: 14 N at the valve
• Actuator: use with BA 334 01, 3-position rotary lever with detent
• Mounting: panel mounting Ø22 mm or base BW BA 22 if no panel front is available

Center Position Function

In the center position, all outlets are exhausted. This is critical when actuators must be depressurized in the neutral position rather than held under pressure. For load-holding applications, the valve should not be relied upon for mechanical cylinder position retention.

Selection Criteria

Selection of BA 430 301 is based on:

• requirement to control two independent 3/2 signals,
• center exhaust neutral position,
• available air pressure,
• 280 l/min flow relative to actuator volume,
• front panel operation requirement,
• use of detent lever for fixed selection positions

Applications

Suitable for pneumatic panels, manual sequencing, machine function selection, control of small single-acting cylinders, and local service or commissioning commands.

Maintenance

Check for leakage at outlets, air cleanliness, secure panel mounting, rotary lever wear, and full exhaust in center position.