Barksdale MSPS-JJ15SS Low Pressure Vacuum Switch 100 Psi

Product Description

The BARKSDALE MSPS-JJ15SS is a low pressure vacuum pressure switch designed for monitoring and controlling pressure in fluid and pneumatic systems. It features a single-pole double-throw (SPDT) contact form with a maximum pressure setting of 100 psi and operates at up to 28 volts. The wetted components are constructed from 304 stainless steel with a Buna-N diaphragm, making it well-suited for applications where corrosion resistance and media compatibility are priorities. With a 2% repeatability rating and an adjustable setpoint, it delivers consistent switching performance. Licensed HVAC technicians, plumbers, and industrial service techs are the typical installers for this type of device.

This switch is appropriate for residential and light commercial systems where low pressure or vacuum sensing is required, such as HVAC equipment, compressors, pumps, and fluid handling systems. The 1/8 inch NPT male thread connection allows straightforward integration into standard ported manifolds and plumbing assemblies. Its operating temperature range of 20 degrees F to 165 degrees F makes it suitable for most indoor mechanical room and equipment environments. The normally open and normally closed starting positions give installers flexibility in circuit design.

Key Features

• SPDT contact form with both normally open and normally closed starting positions
• 304 stainless steel wetted material with Buna-N diaphragm for corrosion resistance
• Adjustable setpoint with 2% repeatability for consistent pressure control
• Minimum deadband of 0.3 psi, maximum deadband of 1.00 psi
• 1/8 inch NPT male thread connection for standard integration
• CSA and UL Recognized certifications for code-compliant installations

Compatibility

Designed as an OEM-style replacement or new-installation pressure switch for low pressure and vacuum monitoring applications using 1/8 inch NPT male ported connections in fluid and pneumatic systems.

Installation Notes

Installation should be performed by a qualified technician familiar with low-voltage control wiring and pressure system safety procedures. Always isolate and depressurize the system before connecting or removing the switch. Electrical connections are made via terminals; follow applicable NEC requirements for low-voltage control circuits. Verify setpoint adjustment and deadband configuration against system design requirements before returning equipment to service.