Air Compressor Pressure Switch 90-120 PSI Auto Control Valve Heavy Duty

Designed for reliable, heavy‑duty air pressure management in compact systems, this four‑way vertical pressure switch provides precise auto control from 90 to 125 psi. The rugged construction and integrated manual override make it ideal for mini air compressors used in small workshops or home DIY setups.

Key features

• Auto load/unload functionality to minimize compressor cycling and save energy.
• Bright red manual ON/OFF knob for immediate, tactile control when needed.
• Vertical four‑way switch design with four female inlet ports for versatile plumbing options.
• Compact form factor with sturdy build to endure daily use in demanding environments.

Technical specifications

• Model: nf-a8
• Rated voltage: 220/380V
• Maximum current: 20A
• Working pressure: 5–8 KG (90–125 psi)
• Port size: four female air inlet ports, approx. 0.4 inch / 11 mm thread diameter
• Dimensions: 82 × 52 × 127 mm

Why this switch stands out

• Energy-efficient control that reduces compressor start/stop cycles, helping extend motor life and lower electricity usage.
• Heavy‑duty construction tuned for longevity in demanding environments, not just light‑duty hobby setups.
• Intuitive manual override with a red knob ensures quick intervention during maintenance or pressurized tasks.
• Four‑port configuration provides flexible routing for multiple lines or tools without adding complexity.

Installation & usage

Ideal for mini air compressors and small-line systems, this switch is straightforward to install thanks to standardized port diameters. Use the four 11 mm threaded ports to route supply and return lines, connect to compatible electrical controls within the 220/380V range, and set the working pressure within the 90–125 psi band for your system. The unit ships as a single air compressor switch, ready to integrate into existing setups.

What’s in the box

• 1 x Air compressor switch