Tecmark Pressure Switch 3902

The Tecmark Pressure Switch 3902 is designed for precise pressure monitoring and protection of spas and heating systems. With a robust design and simple installation, this pressure switch is ideal for applications where safe operation and reliability are essential.

Key Features:
Compact Design: 58mm Height and 50mm Width, perfect for installations where space is limited.
1/8" MPT Thread: Suitable for mounting to a heating element or pipework.
Two Spade Connectors: Easy connection of contact wires.
Pressure Settings: Adjustable PSI gauge on the side for fine tuning (adjust carefully if necessary).
Durable Material: Resistant to wear and tear and designed for long term use.
Technical Specifications:
Specification Details
Manufacturer Tecmark
Model 3902
Thread Type 1/8" MPT
Dimensions Height: 58mm, Width: 50mm
Connection 2 x Spade Connectors
/>Maximum Voltage Up to 250VAC
Pressure Range (PSI) Adjustable (adjust carefully)
Compatibility:
Applications: Suitable for spas, heating systems and other applications where pressure monitoring is required.
Replacement Model: Replaces Model 3903 with screws.
Installation and Use:
Mounting: Simply screw the switch onto the heater tube using the 1/8 inch MPT threads.
Connection: Connect the contact wires to the two flat spade connectors.
Testing: Check for proper pressure regulation and carefully adjust the PSI gauge if necessary.
Maintenance: Regularly check for wear and test that the internal ball bearing moves freely. If it is stuck, it will need to be replaced.
Benefits:
Easy Installation: Fits directly onto standard heaters.
Precise Pressure Control: Protects equipment from over-pressurization and prevents dry running.
Compact, Rugged Design: Ideal for tight spaces and extended use.
Versatile Application: Compatible with a variety of spa and heating systems.
Summary:
The Tecmark Pressure Switch 3902 provides a reliable solution for pressure monitoring in spa and heating systems. Its compact design, easy installation, and adjustable PSI gauge make it ideal for precise, safe control. Perfect for replacements or new installations where reliability is paramount.