Madison M7700 Liquid Level Side-mounted Switch Spst

Product Description

The MADISON M7700 is a side-mounted liquid level switch designed for monitoring fluid levels in tanks and reservoirs handling fuels and lubricating oils. The unit features a 1/2-inch threaded connection, a maximum operating pressure of 100 psi, and a maximum temperature rating of 150 degrees F. It uses a single-pole, single-throw (SPST) switching configuration and is compatible with both 120-volt AC and 240-volt AC circuits at up to 30 watts. The float specific gravity rating of 0.75 makes it suitable for lighter petroleum-based fluids. Licensed HVAC technicians, plumbers, and industrial maintenance professionals install this switch in fluid monitoring and control applications.

The M7700 is intended for use with fuels and lubricating oils in both indoor and outdoor mounting configurations. Its side-mount design allows installation directly through the sidewall of a tank or reservoir, providing accurate level detection without top-entry access. The PBT body material offers resistance to common petroleum-based fluids, making it a practical choice for light industrial, HVAC equipment, and mechanical system fluid management applications.

Key Features

• SPST switching logic for straightforward open or closed circuit level control
• 1/2-inch threaded connection for standard tank or reservoir sidewall installation
• Rated for 120V AC and 240V AC at up to 30 watts
• 100 psi maximum pressure rating supports pressurized tank applications
• 150 degrees F maximum temperature suitable for warm lubricating oil environments
• PBT body construction for compatibility with fuels and lubricating oils
• In-mounting or outside-mounting configurations supported

Compatibility

Designed for use with fuels and lubricating oils in side-mounted liquid level sensing applications requiring a 1/2-inch threaded port and SPST switching logic.

Installation Notes

Installation should be performed by a qualified technician familiar with fluid system controls and applicable local codes. De-energize all electrical circuits and depressurize the tank or reservoir before installing or servicing this switch. Ensure the threaded port is clean and use appropriate thread sealant rated for the fluid type. Verify float orientation and fluid specific gravity compatibility before placing the system back in service.