Overview
The Festo LR-D-MINI pressure regulator (159624) is a compact, directly actuated diaphragm regulator designed for precise control of compressed air in industrial automation and pneumatic applications. This unit combines the regulator with an integrated 162842 K1 pressure gauge for visual monitoring of output pressure. The D-series mini design provides excellent regulating characteristics with minimal hysteresis, making it suitable for applications requiring stable and consistent pressure output.
Key Features
- Directly actuated diaphragm design — enables rapid response to pressure changes and accurate output control
- Primary pressure compensation with secondary venting — maintains constant output pressure across varying input conditions
- Dual pressure gauge connections — accommodates two gauge mounting options for flexible installation
- Rotary knob with detent lock — secures pressure setting and prevents accidental drift
- Metal construction — die-cast zinc/aluminum housing with NBR seals for durability and long service life
- Inert gas compatible — operates with compressed air (ISO 8573-1:2010 [7:4:4]) or inert gases
Technical Specifications
- Manufacturer: Festo
- Part Number: 159624 (LR-D-MINI with gauge)
- Regulator Type: Directly actuated diaphragm
- Series: D (mini size)
- Pressure Gauge: 162842 K1 (included)
- Port Connection: G1/8″ threaded (pressure gauge connection)
- Pressure Regulation Range: 0.5 to 12 bar (7.25 to 174 psi)
- Operating Pressure (Input): 0.1 to 1.6 MPa (1 to 16 bar / 14.5 to 232 psi)
- Pressure Hysteresis: ≤0.2 bar (2.9 psi)
- Nominal Flow Rate: 1500 L/min (standardized to DIN 1343)
- Design Material: Die-cast zinc/aluminum housing, NBR seals
- Operating Temperature: 0°C to +60°C (32°F to 140°F)
- Mounting Position: Optional
- Actuator Lock: Rotary knob with detent
Typical Applications
The Festo LR-D-MINI is ideal for:
- Precision pneumatic control systems in manufacturing and assembly lines
- Pilot-operated valve control circuits requiring stable reference pressure
- Lubricated and non-lubricated compressed air systems
- Industrial automation equipment with space constraints (mini form factor)
- Test and measurement setups requiring accurate pressure regulation
- OEM applications in pneumatic machinery and tooling
Compatibility & Replacements
Compatible With
- ISO 8573-1:2010 compressed air systems (air quality class [7:4:4])
- Inert gas supply systems (nitrogen, argon)
- Festo LF-D-MINI lubricators and other D-series components
- Standard G1/8″ SAE/ISO pneumatic connections
- Two-point pressure gauge connection manifolds
Replaces / Drop-In Replacement For
- LR-1/4-D-MINI (full-bore variant)
- Comparable mini-size pressure regulators from alternative vendors with G1/8″ ports and 0.5–12 bar range
Works With
- Festo pneumatic control software and system design tools
- Analog pressure gauges with SAE/ISO threads (G1/8″)
- Digital pressure transducers via gauge connection ports
- EtherCAT and PROFINET fieldbus modules (when integrated into control systems)
- Standard pneumatic schematics and ISO 1219 circuit diagrams
