Precision Pressure Control for Critical Pneumatic Circuits
The Festo MS4-LR-1/4-D6-RG-WR (manufacturer ID 8190240) is a directly controlled diaphragm regulator engineered for applications where maintaining a stable outlet pressure is non-negotiable. With a pressure regulation range of 0.3 to 7 bar and a maximum pressure hysteresis of 3.625 psi, this unit delivers the repeatability needed for processes such as clamping, tensioning, or spray finishing where even minor fluctuations can compromise quality.
Its compact size 4 body and G1/4 connections make it suitable for integration into tight machine layouts without sacrificing flow capacity. The standard nominal flow rate of 1800 l/min ensures that downstream equipment receives adequate supply even during peak demand cycles.
Operator-Friendly Adjustments and Safety
The regulator features a rotary knob with detent, allowing precise set-point adjustments that resist accidental changes from vibration or incidental contact. This is particularly valuable in production environments where multiple operators interact with the same station. The integrated secondary exhausting function enables rapid pressure release when reducing the set point, improving response time and operator safety during changeovers.
Additionally, the return flow function permits reverse flow through the regulator, simplifying system design in applications where backflow may occur during cylinder retraction or when multiple pressure zones are interconnected.
Built for Industrial Environments
Constructed with a die-cast aluminum sub-base and housing, the MS4-LR-1/4-D6-RG-WR offers robust mechanical protection. NBR seals and diaphragm ensure compatibility with standard compressed air and inert gases. The unit is rated with corrosion resistance class 2 (moderate corrosion stress), making it appropriate for typical factory floor conditions, including areas with occasional coolant mist or humidity.
The red-green pressure gauge scale provides quick visual verification of outlet pressure, reducing the risk of operating outside specified parameters. With a product weight of only 225 g, the regulator adds minimal load to manifold assemblies or direct line installations.
Flexible Mounting and Media Compatibility
Mounting options include front panel mounting, line installation, or use with accessories, giving design engineers flexibility in how the regulator is integrated. The unit can be mounted in any position, simplifying layout in space-constrained machinery.
It operates with compressed air per ISO 8573-1:2010 [7:4:4] and inert gases, and oil lubrication is permissible if required for downstream components. The operating pressure range spans 0.8 to 14 bar, accommodating a wide variety of supply pressures. Temperature tolerance from -10°C to 60°C for storage, media, and ambient conditions ensures reliable performance in typical industrial settings.
Compliance and Quality Assurance
The MS4-LR-1/4-D6-RG-WR is RoHS-compliant and meets LABS (PWIS) conformity per VDMA24364-B1/B2-L, making it suitable for use in paint shops and other applications where silicone-free materials are critical. For food industry use, consult the supplementary material information to verify suitability for your specific process.
This regulator is a dependable choice for engineers seeking precise pressure control with minimal hysteresis, robust construction, and flexible integration options. Its combination of performance and durability makes it a practical component for improving the reliability of pneumatic systems.