Allied Pressure Switch 800120-3 (4015P) — 25A, 1/8" NPT, SPDT, Pool & Spa

The Allied Pressure Switch 800120-3 (4015P) is a rugged SPDT switch designed specifically for pool and spa systems. With a 25A electrical rating and a 1/8" NPT connection, it delivers reliable pressure sensing and switching tailor-made for wet environments.

• Electrical rating: Up to 25A at 24–240 VAC
• Pressure range: 1–5 psi operating range for dependable control
• Connection size: 1/8" NPT (Male) for standard plumbing compatibility
• Switch type: SPDT (Single-Pole, Double-Throw) for versatile wiring options
• Body and pan material: Plastic pan for lightweight, corrosion-resistant performance
• Differential: 2-1/2 lb differential to minimize relay chatter and ensure stable operation
• Industry application: Universal pressure switch tailored for pool and spa equipment
• Brand and heritage: Allied Innovations, engineered for reliability in chlorinated, humid environments

This pressure switch is built to protect and optimize pool heaters, pumps, and spa controllers by delivering precise pressure-triggered switching. Its plastic pan and durable electronics withstand the chemical and moisture exposure common in pool and spa setups, while the 1/8" NPT threading makes it straightforward to install in compatible lines. Ideal for technicians and homeowners who want a dependable, long-lasting control device that reduces relay noise and improves system stability.

Allied Pressure Switch [25 Amp] [1/8" NPT] 800120-3 (4015P)

• SPDT
• 25A
• 1/8" NPT

Universal Pressure Switch
Introduced in 1993 specifically for the pool and spa industry, this pressure switch is designed with a 2-1/2 lb differential to completely eliminate oscillating or chattering relays. This uses a plastic pan material. 

Electrical rating 1-25 amps at 24-240 VAC