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Red Festo MS4 filter regulator with pressure gauge and plastic bowl guard, 1/4 port, rotary knob, 275 g

Festo

Festo MS4-LFR-1/4-D7-CRV-AS Filter Regulator 529154

SKU CH-XSYW-069VE MPN MS4-LFR-1/4-D7-CRV-AS

Combines 5 µm filtration and 0.5–12 bar regulation with automatic condensate drain in a 275 g unit

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Reliable air filtration at 5 µm grade
  • Automatic condensate drain removes up to 19 ml
  • Regulates pressure from 0.5 bar to 12 bar
  • Delivers 1200 l/min standard flow rate
  • Compact 275 g design suits vertical mounting

Festo MS4 Filter Regulator 529154

The Festo MS4-LFR-1/4-D7-CRV-AS is a filter regulator designed for compressed air preparation in industrial environments. It suits technicians and engineers who require precise pressure control combined with particle filtration down to 5 µm. The unit operates within a supply pressure range of 2 bar to 12 bar and delivers a regulation range of 0.5 bar to 12 bar. Its standard nominal flow rate reaches 1200 l/min.

Integrated gauge and automatic drain

The built-in pressure gauge provides immediate visual feedback of the regulated output pressure. A fully automatic condensate drain removes accumulated moisture without manual intervention, reducing maintenance downtime. The bowl holds up to 19 ml of condensate and is protected by a plastic bowl guard. The rotary knob with detent locks the set pressure and can be secured further with optional accessories.

ISO 8573-1 air quality class 6:4:4

Compressed air at the outlet meets ISO 8573-1:2010 class 6:4:4 for particles, water and oil content. Maximum pressure hysteresis is limited to 0.25 bar, which constrains repeatability in highly dynamic circuits. The housing carries corrosion resistance class 2 for moderate corrosion stress. Ambient and medium temperature must stay between 5 °C and 60 °C, while storage tolerates -10 °C to 60 °C. The product weighs 275 g.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $76.99
Cheaper than about 64% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameFESTO
Model nameMS4-LFR-1/4-D7-CRV-AS
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How often should the 5 µm filter element be replaced?

Replace the filter element when pressure drop becomes excessive or at each scheduled maintenance interval; the bowl holds up to 19 ml of condensate before the automatic drain operates.

What pressure regulation limit appears first during continuous operation?

The regulator maintains outlet pressure between 0.5 bar and 12 bar with a maximum hysteresis of 0.25 bar; supply pressure must stay within 2 bar to 12 bar.

How much heat does the unit add to the compressed air when running all day?

The housing is rated for ambient and medium temperatures of 5 °C to 60 °C; no additional heat is generated beyond the compressed air temperature itself.

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