The Festo MS4-LDM1-1/4-P10-Z (Festo part number 543633) is a membrane-type compressed air dryer from Festo's MS4 modular service unit range. It uses a permeable membrane rather than refrigeration or desiccant granules to remove moisture from the air stream, giving a fixed pressure dew point reduction of 20 K with no electrical supply, no moving parts, and no condensate drain to maintain.

It's rated for a standard nominal flow rate of 100 l/min at an operating pressure of 3 to 12.5 bar, with two G1/4 threaded ports for straightforward line installation. The unit takes compressed air supplied to ISO 8573-1:2010 class [1:4:2] and delivers air to the tighter [1:3:2] class at the outlet - oil-lubricated air is not supported, so it should sit downstream of an oil-free supply or a coalescing filter. Medium and ambient temperature range is 2°C to 50°C, with a wider -20°C to 60°C storage range, and it must be mounted vertically within ±5°.

Construction is a die-cast aluminum housing with a wrought aluminum alloy bowl, weighing 530 g, and the unit is RoHS-compliant. It carries VDMA24364-B1/B2-L LABS (paint-wetting impairment substances) conformity and a corrosion resistance class of CRC 2 (moderate corrosion stress); Festo's supplementary material documentation should be checked separately for food-industry use.

Supplied by Z&F Corporation as part of the Festo air preparation range - confirm exact lead time and accessory compatibility (line-installation kits, mounting brackets) with our technical sales team when requesting a quote.