Description
The SM90-1000-SS Stainless Steel Single-Level Float Switch is a rugged and highly reliable solution for liquid level sensing in high-temperature, high-pressure, and chemically demanding environments. Manufactured from durable 316 stainless steel, this float switch offers excellent resistance to corrosion, mechanical stress, and thermal fluctuations, making it ideal for use in industrial tanks, process systems, chemical plants, cooling systems, and oil reservoirs.
With a maximum pressure rating of 900 PSI and an operating temperature range from -40°F to 300°F, the SM90-1000-SS is built for durability in the most extreme applications. It’s engineered to perform where plastic or other material switches would degrade, fail, or deform over time. The non-reactive stainless steel body ensures compatibility with a wide variety of liquids including oils, fuels, solvents, and industrial chemicals.
This float switch features a compact vertical-mount design with a 1/8″ NPT threaded stem, providing a secure and space-efficient installation in tanks and vessels. The float activates at a specific gravity of 0.72, ensuring precise liquid level detection in both water and lower-density fluids. The integrated SPDT reed switch offers a contact rating of 3 VA, capable of switching up to 100 VAC/DC at 0.25A, making it ideal for control signals, alarms, or automation systems.
The switch is supplied with 24-inch, 20 AWG lead wires sheathed in PVC insulation, offering dependable electrical connectivity and resistance to moisture and heat. Like all float switches in the SM90 series, this unit can be configured for Normally Open (N.O.) or Normally Closed (N.C.) operation by simply inverting the float, allowing flexible use in various applications without additional hardware.
Whether you’re monitoring chemical storage tanks, managing hydraulic systems, or operating within extreme pressure environments, the SM90-1000-SS provides long-lasting, stable performance and minimizes maintenance thanks to its robust design and high-quality stainless steel construction. It is UL Recognized (File# E177423), assuring compliance with recognized safety and quality standards.
This float switch is an excellent choice for those needing a dependable level sensor for mission-critical operations in demanding industrial or commercial settings.
PDF| Part # | Reed Switch | Dry State | Price |
| SM90-1001-SS | 70 VA | N.O. / N.C. | $77.00 |
| SM90-1003-SS | 100 VA | N.O. / N.C. | $81.40 |
| SM90-1005-SS | 8 VA | SPDT | $82.50 |
| Operating Temp | Maximum Pressure | Float Spec. Gravity |
| -40°F to 300°F | 900 PSI | .72 |
| Thread | Float | Lead Wires |
| 1/8″ npt | 1.08″ diameter | 20 AWG PVC 24″ |
