1/4-18 NPT 110-140 PSI Air Pressure Control Switch

Automate your onboard pneumatic system, safeguard your air compressor motor from burning out, and maintain an optimal pressure range for instant mechanical responses. This premium air pressure control switch is a heavy-duty electrical valve regulator engineered specifically for 12V and 24V mobile air suspension systems, train air horns, onboard air tanks, and custom off-road tire inflation setups. Precision-machined with a standard 1/4-18 NPT male pipe thread interface, this compact pressure regulator monitors reservoir air volume continuously to manage your compressor cycles automatically. Built with high-purity internal contact points encased in a weatherproof, vibration-resistant housing, this high-utility air compressor valve switch provides automotive fabricators, custom truck builders, and overland enthusiasts with a reliable way to maintain consistent pneumatic power.

Key Features

• Calibrated 110-140 PSI Cycle Profile: Pre-set to close its internal electrical circuit when system pressure drops below 110 PSI (turning the compressor on) and snap open cleanly at 140 PSI (shutting the pump down to prevent over-pressurization).

• Universal 1/4 in NPT Tapered Thread: Features clean, factory-cut 1/4-18 NPT male threads that seal tightly into air tanks, distribution blocks, or manifold ports using standard thread sealant.

• Dual 12V/24V Electrical Layout: Equipped with two heavy-gauge spade terminal prongs that integrate into standard automotive relay wiring harnesses, supporting low-voltage DC applications up to 20 amps.

• Vibration-Isolated Hardware Assembly: Enclosed within a rugged, corrosion-resistant metallic cap and composite base plate built to withstand high firebox heat, road salt spray, and chassis vibrations.

Why Choose Our Integrated Air Suspension Switch Cheap, uncalibrated pressure switches suffer from sloppy internal tolerances, causing their electrical contacts to weld together or drift off their target cut-in and cut-out limits. When a switch fails to cut out, your compressor runs continuously until it overheats, melts its internal seals, or drains your vehicle's battery completely. This advanced 110-140 PSI tank pressure control valve eliminates that hazard by using a crisp, click-action mechanical pressure diaphragm. It handles thousands of cycles smoothly without losing calibration, providing mobile mechanics, off-road racing teams, and custom luxury builders with a long-lasting utility asset that protects expensive air pumps.

Perfect For

• Managing compressor cycle run-times on custom custom stance car builds, hot rods, and truck air bag suspension systems.

• Maintaining optimal high-volume reservoir pressure to power loud multi-trumpet locomotive style air horns.

• Regulating low-voltage emergency tire replacement compressors and vehicle-mounted utility air tanks.

Product Specs

• Material Base: Anti-Corrosion Plated Industrial Alloy Fitting with a High-Impact Composite Shroud

• Thread Fitting Spec: Standard 1/4-18 NPT Male Tapered Mechanical Pipe Thread

• Pressure Operational Bounds: Factory Pre-Set 110 PSI Cut-In to 140 PSI Cut-Out Sizing

• Electrical System Scope: 100% Engineered for 12V or 24V Direct Current (DC) Automotive Relays

Automate Your Onboard Air Systems and Protect Your Compressor Instantly Stop relying on manual cockpit toggles or risking compressor burnout from cheap, drifting sensors. Bring automatic, crisp pressure management back to your air suspension reservoir by ordering your 110-140 PSI pressure control switch today.