Allied/Len Gordon DTEC Pressure Switch — 1A, 1/8" NPT, (800240-3)

Designed for the pool and spa market, this universal pressure switch from Allied Innovations delivers dependable pressure sensing and relay control. Its 2.5 psi differential helps eliminate relay chatter for smoother pump and jet operation, making it a trusted replacement part for a wide range of spa systems.

• Port size: 1/8" NPT threaded connection for easy integration into standard spa and pool plumbing.
• Electrical rating: 1–25 amps at 24–240 VAC, offering compatibility with common spa controllers and circuits.
• Differential: 2.5 psi differential to minimize relay oscillation and extend component life.
• Construction: Durable stainless pan assembly built to withstand damp spa environments.
• Mounting: Compact, through-diaphragm style with a secure mounting profile for reliable installation.
• Industry heritage: From Allied Innovations, a long-standing name in spa parts and OEM replacements with a history dating back to Len Gordon’s innovations.
• Compatibility: Serves as a direct replacement option within Len Gordon/Allied spa systems and related spa equipment families.

This pressure switch is ideal for retrofit projects, service repairs, or new installations where a proven, low-maintenance trigger is needed to control pumps and sanitizing equipment. Its robust construction and wide voltage/amperage range make it a versatile choice for professional pool and spa technicians, service companies, and dealers seeking reliable, long-lasting performance.

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 stainless pan material
• 1/8" NPT
• Electrical rating 1-25 amps at 24-240 VAC.

Replacement Option For:

• SX79D11DPXXXX15
• TDI-3902
• 800315-3 1.5PSI / MFG #510AD173
• 800318-3 / MFG #SX79D11DPXXXX06
• 845220
• 01515-04 Rev B

Allied Innovations continues to manufacture and offer replacement spa parts for Len Gordon, Brett Aqualine, Ramco, Catalina and Spa Builders Systems and much more. They have expanded their market base to include original equipment manufacturers, wholesale distributors, dealers, service companies within various markets of the swimming pool, spa, jetted tub, and custom injection molding industries.