The UNS‑VA/SB5 Bilge Guard is a robust stainless steel level switch designed for bilge monitoring in marine and industrial applications. Featuring a plastic (PE) float, it offers a maximum operating pressure of 3 bar and is suitable for top mounting installations. The switch includes a test function, allowing users to verify its operation without exposing the system to hazardous conditions. It is equipped with a single SPST contact, which can be configured as normally open (NO) or normally closed (NC) by rotating the float. This versatility makes it ideal for applications such as shipbuilding, yacht construction, and sewage treatment plants. The UNS‑VA/SB5 Bilge Guard is also DNV, BV, and ATEX certified, ensuring compliance with international safety standards.
Features
UNS-VA/SB5 Bilge Level Switch Guard with Test Function Features:
- For mounting through top
- With test function
- Rugged and sturdy design
- Mounting bracket
- 1 switch contact
- Approvals: DNV, BV, ATEX on request
Specifications
UNS-VA/SB5 Bilge Level Switch Guard with Test Function Specifications:
| Specification | Description |
|---|---|
| Materials – Stem, Bracket, Float Chamber | Stainless steel |
| Materials – Float | PE |
| Materials – Cable | Polymer, halogen-free, UL-V0 |
| Materials – Cap Nut | PA |
| Operating Pressure | Max. 3 bar (float / +20 °C) |
| Temperature Range | -20 °C … +70 °C |
| Fluid Specific Gravity | Min. 0.80 g/cm³ |
| Immersion Depth at Density 1 | 28 ±2 mm, L1 ~18 mm |
| Immersion Depth at Density 0.8 | 35 ±2 mm, L1 ~11 mm |
| Mounting Position | Vertical ±15° |
| Protection Class | IP67, IP68 |
| Electrical Connection | Polymer cable, 2 × 0.75 mm² |
| Cable Length | 2 m / 5 m / 10 m / 15 m |
| Contact Type | SPST switch (NO) (marking at bottom); By turning float upside down: SPST switch (NC) (marking at top) |
| Contact Rating | Max. 230 V AC/DC, max. 2.0 A, max. 40 VA/W |
| Weight | SB4: approx. 175 g / SB5: approx. 180 g |
| Approvals | DNV, BV, RINA, LR |
| EX Approval | IECEx TUN 17.0039X; TÜV 18 ATEX 214370 X II 1 G Ex ia IIC T6 Ga or II 1/2 G Ex ia IIC T6 Ga/Gb or II 2 G Ex ia IIC T6 Gb or II 1 D Ex ia IIIC T100°C Da |
Applications
UNS-VA/SB5 Bilge Level Switch Guard with Test Function Applications:
- Shipbuilding
- Yachtbuilding
- Sewage treatment plant
Q & A
UNS-VA/SB5 Bilge Level Switch Guard with Test Function Float Q & A
At a fluid density of 1 g/cm³, the immersion depth is 28 ±2 mm, and at 0.8 g/cm³, it is 35 ±2 mm.
Downloads
Download Barksdale UNS-VA/SB4/SB5 Bilge Level Switch Guard Datasheet
Contact us at (855) 737-4714 to learn more or fill out our online form.