Pressure Switch 3925, 25A, Tecmark, Universal, SPNO, w/Brass | 3925

Tecmark Universal Pressure Switch 3925

Model: 3925 – 25 Amp Rating

Product Overview

We stock this versatile Tecmark universal pressure switch. This adaptable component offers exceptional compatibility across multiple applications with its comprehensive fitting options.

Key Features

• 25 Amp rating for electric heater applications
• Universal retrofit capability
• SPNO (Single Pole Normally Open) design
• Multiple adapter options included
• Brass fitting compatibility
• Broad application versatility

Technical Specifications

Specification	Detail
Manufacturer	Tecmark
Model Number	3925
Amperage Rating	25A
Switch Type	SPNO
Configuration	Universal
Contact Type	Single Pole Normally Open
Application	Electric Heater Systems
Construction	Industrial Grade

Exploded parts diagrams: This part is shown as item #1m on the Raypak 53 Model Gemini & Spa-Pak Heater (Mfg 1982-84); item #6 on the Raypak ELS 552-2 & 1102-2 Heater Models (11/1983 – pres); item #1m on the Raypak 55A Model Versa (5/1/87-9/30/89); item #1m on the Raypak Versa 105A Bronze & Cast Iron Heater (10/91-5/99); item #1m on the Raypak 153 (12/1/81-1/1/84) & 153A (1/1/84-2/15/87); item #1m on the Raypak Versa 155A/155B/155C Heaters; and 4 other assemblies exploded parts diagrams.

🔧 Raypak 53 Model Gemini & Spa-Pak Heater (Mfg 1982-84) – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.

Included Adapters

• 1/8″ barb adapter
• 3/8″ compression adapter
• 1/4″ compression adapter

Installation Versatility

The universal design allows this switch to retrofit virtually any pressure switch application. Multiple included adapters ensure compatibility with various plumbing configurations, making it an ideal replacement choice across different spa systems.

Application Range

• Electric heater systems
• Spa pressure monitoring
• Equipment protection circuits
• Retrofit installations
• System upgrades

Design Benefits

• Universal compatibility
• Multiple connection options
• Reliable switching action
• Durable construction
• Flexible installation options

Upgrade Notes

This model has been discontinued – refer to part number 47-319-1006 for current replacement options. Brass fittings need to be ordered separately for new installations.

Installation Considerations

• Choose appropriate adapter for your application
• Verify system compatibility
• Ensure proper pressure settings
• Check mounting requirements
• Confirm electrical specifications

🔧 Exploded diagram and parts

This part belongs to the Pentair Tropic Isle 120 – 400 Model Heaters assembly. Everything listed below is something we stock for it, and the numbers match the diagram.

Parts that go with this