UNS-VA 1/8 NPT-VA27 (formerly BLS 1750)

  • Compact size for easy installation
  • Ideal for small tanks & vessels
  • Reversible switch logic
  • Broad media compatibility
  • All models incorporate hermetically-sealed, magnetically actuated reed switches
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Barksdale's single-point float-type level switch provides a variety of solutions for your specific level control problems.
UNS-VA 1/8 NPT-VA27 Level Switches are ideal for general level measurement in tanks or containers that require a stainless steel stem and float. This series features an intermediate size float for applications with a vertical clearance (1-7/8" stem length). This IP54-rated switch is ideally suited for rugged service and use in high viscosity liquids. Switch polarity on all models can be changed from normally-open to normally-closed by simply rotating the float 180 degrees. For your level switching and control needs requiring only a single float, Barksdale's UNS Series Level Switches are the ideal solution.


General Specifications*

Switch Rating:
230 VAC/DC; 2A; 40 VA/W
150 VAC/100 VDC; 0.2A, 3VA/W
Switch Configuration: Shipped as normally open as standard. Can be changed to normally closed by rotating fl oat 180°.
Contact Mode*: 1 – SPST-switch (NO)
2 – SPST-switch (NC)
3 – SPDT-switch
Wetted Parts:
316 stainless steel (VA)
316 stainless steel (VA)
1/8” NPT male
Electrical Connection: PVC cable max 3 x 0.34mm2
1m/3m/5m length
Minimum Specific Gravity:
Stainless Steel Float:
0.71 g/cm3
Protection Class: IP54
Operating Temperature:
Option/ High Temp:
14° to +220°F (-10° to +105°C), PVC-cable
-40° to +302°F (-40° to +150°C), silicone cable (-HT), cable consult factory
Operating Pressure:
Stainless Steel Floats:
220 psig (15 bar)
Weight: Approx. 90 grams (3.2 oz.)
* The contact modes (NO or NC) are defined on the basis of an empty tank and for a level switch mounted through the


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