Product Analysis: Festo 540346 MS6-LR Pressure Regulator
The Festo 540346, model MS6-LR-1/2-D7-AS, is a high-precision pressure regulator from the modular MS Series air preparation family. This unit is designed to provide stable operating pressure in pneumatic systems, regardless of fluctuations in the primary air supply or air consumption. The MS6 size is the industry standard for medium-to-high flow applications, ensuring that sensitive pneumatic actuators receive consistent air pressure for accurate movement.
Advanced Air Preparation Features
The MS6-LR-1/2-D7-AS features a G1/2 threaded connection and a pilot-controlled diaphragm regulator design. The «D7» code indicates a high-pressure regulation range of 0.5 bar to 12 bar, suitable for heavy-duty industrial circuits. It also includes «AS» technology, which stands for a lockable regulator knob, a critical safety feature that prevents unauthorized pressure changes and complies with Lockout-Tagout (LOTO) protocols.
Key Technical Characteristics
- Part Number: 540346.
- Model: MS6-LR-1/2-D7-AS.
- Connection Size: G1/2.
- Pressure Regulation Range: 0.5 bar to 12 bar.
- Standard Nominal Flow: 7,500 l/min.
- Design: Diaphragm regulator with secondary venting.
- Actuator Lock: Rotary knob with integrated lock.
- Housing Material: Die-cast aluminum.
Modular Integration and Benefits
The 540346 integrates seamlessly with other MS-series components, such as filters and lubricators, using modular connecting plates. This allows for the creation of customized air preparation assemblies. The secondary venting feature is vital for safety, as it allows the downstream pressure to be exhausted if the supply pressure is removed, preventing unintended machine movement. The integrated pressure gauge (optional or sold separately) provides clear visual monitoring for operators.
| Category | Specification |
| Temperature Range | -10°C to +60°C |
| Hysteresis | 0.25 bar |
| Flow Direction | Left to Right (Standard) |
Technical Note
During installation, ensure the flow direction matches the arrow on the regulator housing. Regular inspection of the internal diaphragm is recommended in systems where the air contains high levels of compressor oil. Using a Festo MS6 filter upstream of the 540346 will significantly extend the service life of the regulator seals.
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