Description
Features
Visual fluid level indication in hydraulic tanks, up to 2 bar / 29 PSI pressure.
Nominal Sizes and Design
7 nominal sizes from 76 mm / 2.99 in to 381 mm / 15.00 in. Display is continuous (SNA-076 ... 176) or divided into two (SNA-254) or three segments (SNA-305 and SNA-381).
Media Compatibility
Suitable for mineral and petroleum-based hydraulic fluids (HL and HLP).
Materials
Housing: St 12 steel, black powder-coated. Sight tube and plugs: polyamide (PA). Seals: NBR (Buna-N®). Scale base: PVC.
Alternative materials for individual components (sight glass, housing, seals, screws) available on request for improved UV or chemical resistance, low-temperature applications down to -50°C / -58 °F, and for special media.
Technical Specifications
IP 65 protection: Dust-tight and protected against water jets. Operating temperature range: -30 °C ... +80 °C / -22 °F ... +176 °F. Recommended tightening torque: 8 N·m / 5.9 ft·lb.
Accessories / Options
Red / blue capillary tube thermometers, temperature display range up to +80 °C / +180 °F. Dial thermometers with probe and Celsius or dual Celsius / Fahrenheit scale, temperature display range up to +100 °C / +200 °F. Thermal switches, temperature sensors, float ball, Deutsch adapter cable.

Nominal size | A (mm/in) | B (mm/in) | C (Max.) (mm/in) | D (mm/in) | E (mm/in) | F (with T1) (mm/in) | F (with T2) (mm/in) | L1 (mm/in) | L2 (mm/in) | L3 (mm/in) |
---|---|---|---|---|---|---|---|---|---|---|
SNA-076 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 108 / 4.25 | 76 / 2.99 | 31 / 1.22 |
SNA-127 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 159 / 6.26 | 127 / 5.00 | 76 / 2.99 |
SNA-150 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 182 / 7.17 | 150 / 5.91 | 99 / 3.90 |
SNA-176 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 208 / 8.19 | 176 / 6.93 | 124 / 4.88 |
SNA-254 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 286 / 11.26 | 254 / 10.00 | 192 / 7.56 |
SNA-305 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 337 / 13.27 | 305 / 12.00 | 244 / 9.61 |
SNA-381 | 45 / 1.77 | 34,5 / 1.36 | 8 / .32 | 28 / 1.10 | 43,5 / 1.71 | 165,5 / 6.52 | 265,5 / 10.45 | 413 / 16.26 | 381 / 15.00 | 319 / 12.56 |