ALCO Controls – FF 142‑8 DAH – Mechanical Pressure Switch (1–8 bar Range)

Manufacturer: ALCO Controls (also branded Emerson, FANAL, Westinghouse)  

Model/MPN: FF 142‑8 DAH (also listed as FF 4‑8 DAH)  

Device Type: Mechanical pressure switch with two change-over (SPDT) contacts  

Pressure Range: Adjustable upper switching point from 1 … 8 bar, differential 0.4 … 2.4 bar  

Media Compatibility: Suitable for oil, water, and air with perbunan diaphragm  

Pressure Connector: G 3/8″ female polyamide (silumin housing); ABS enclosure, IP55/IP54 protection  

Switch Adjustment: Independent knobs and clear scales (bar/psi) for upper trip and differential  

Repeatability & Reliability: High repeatability, snap-action lever mechanism minimizes chattering

Applications: Industrial pipeline monitoring, HVAC, hydraulic/pneumatic systems; suitable for pump control, compressors, heaters, refrigeration equipment