Easy-View High-Pressure Oil-Level Indicators
Check the level of hydraulic fluid or oil in your pressurized system from any angle. These indicators are made of clear, shatter-resistant plastic, so they don't require a shield for protection as in other oil-level indicators. Mount them from the outside of your tank.
For technical drawings and 3-D models, click on a part number.
Window | Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Connection Ctr.-to-Ctr. | Overall Ht. | Ht. | Dia. | Body Wd. | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Each | |
Nylon Plastic  | |||||||||||
1/2"-20 UNF Male Thread | |||||||||||
| 3" | 3 7/8" | 1 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 000000 |
| 5" | 5 7/8" | 3 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
| 6" | 6 7/8" | 4 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
| 7" | 7 7/8" | 5 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
| 8" | 8 7/8" | 6 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
| 10" | 10 7/8" | 8 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
| 12" | 12 7/8" | 10 5/16" | 13/16" | 1 1/8" | 125 psi @ 70° F | -40° | 225° | Aluminum | Nylon Plastic | 0000000 | 00000 |
Easy-View Oil-Level Indicators
Made with clear, shatter-resistant plastic, these indicators don't require a shield to protect them like other oil-level indicators, so you can check your hydraulic fluid or oil level from any angle. They’re often found on gear boxes, crank cases, and other reservoirs. These indicators mount from the outside of your tank. The vent prevents pressure buildup, which can affect the level displayed. Within the vent, there is a filter for keeping out particles as small as table salt. Unthread the vent to clean its filter or to replace it with your own vent, plug, fitting, or sensor. These indicators also have adjustable rings for marking levels critical to your system.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Overall Ht. | Window Ht. | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Features | Includes | Each | |
Copolyester Plastic | ||||||||||
3/8 NPT Male Thread | ||||||||||
| 3 3/4" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
| 6 3/4" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 3/4" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 3/4" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
1/2 NPT Male Thread | ||||||||||
| 3 13/16" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 6 13/16" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 13/16" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 13/16" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 13/16" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
3/4 NPT Male Thread | ||||||||||
| 3 13/16" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 6 13/16" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 13/16" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 13/16" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 13/16" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
Flexible Easy-View Liquid-Level Indicators
Bend these flexible indicators around the contours of your hydraulic fluid, oil, or water tank. Because their plastic resists shattering, they don’t need a protective shield like other liquid-level indicators, so you can check your tank’s level from any angle. Use them in pressurized applications, such as hydraulic systems where overflow is a concern. They mount from the outside of your tank.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Connection Ctr.-to-Ctr. | Overall Ht. | Window Ht. | Body Wd. | Bend Radius | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Each | |
Aluminum | |||||||||||
1/2"-20 UNF Male Thread | |||||||||||
| 3" | 3 3/4" | 1 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 000000 |
| 5" | 5 3/4" | 3 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 6" | 6 3/4" | 4 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 7" | 7 3/4" | 5 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 8" | 8 3/4" | 6 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 10" | 10 3/4" | 8 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 12" | 12 3/4" | 10 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 14" | 14 3/4" | 12 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 16" | 16 3/4" | 14 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 18" | 18 3/4" | 16 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 20" | 20 3/4" | 18 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 22" | 22 3/4" | 20 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 24" | 24 3/4" | 22 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
| 30" | 30 3/4" | 28 1/2" | 15/16" | 3 1/4" | 30 psi @ 70° F | 35° | 165° | Aluminum | Vinyl Plastic | 0000000 | 00000 |
High-Visibility Sights
Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window. They also have a reflector that makes dark liquid easy to see, especially in low-light conditions.
Brass sights have good corrosion resistance.
UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | For Dark Liquid | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Size | Window Dia. | Hex Size | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Features | Specifications Met | Each | |
Steel | |||||||||||||
NPT Male Thread | |||||||||||||
| 1/2 | __ | 1/2" | 1" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 000000 |
| 1 | __ | 1" | 1 3/8" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
| 1 1/4 | __ | 1 1/4" | 1 3/4" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
| 1 1/2 | __ | 1 1/2" | 2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
| 2 | __ | 2" | 2 1/2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
NPTF Male Thread | |||||||||||||
| 3/8 | __ | 3/8" | 3/4" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
| 3/4 | __ | 3/4" | 1" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window, Indicator Ball | __ | 0000000 | 00000 |
UN/UNF (SAE Straight) Male Thread | |||||||||||||
| __ | 3/4"-16 | 9/16" | 7/8" | 75 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | SAE J1926/3 | 0000000 | 00000 |
| __ | 1 1/16"-12 | 3/4" | 1 1/4" | 75 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | SAE J1926/3 | 0000000 | 00000 |
| __ | 1 5/16"-12 | 15/16" | 1 1/2" | 75 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | SAE J1926/3 | 0000000 | 00000 |
| __ | 1 7/8"-12 | 1 7/16" | 2" | 20 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | SAE J1926/3 | 0000000 | 00000 |
Brass | |||||||||||||
NPTF Male Thread | |||||||||||||
| 3/8 | __ | 7/16" | 3/4" | 100 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 3/8 | __ | 7/16" | 3/4" | 415 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1/2 | __ | 9/16" | 7/8" | 100 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1/2 | __ | 9/16" | 7/8" | 250 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 3/4 | __ | 3/4" | 1 1/8" | 60 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 3/4 | __ | 3/4" | 1 1/8" | 200 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 | __ | 15/16" | 1 7/16" | 60 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 | __ | 15/16" | 1 7/16" | 100 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 1/4 | __ | 1 1/8" | 1 3/4" | 60 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 1/4 | __ | 1 3/16" | 1 3/4" | 25 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 1/2 | __ | 1 3/8" | 2" | 50 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 1 1/2 | __ | 1 7/16" | 2" | 25 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 00000 |
| 2 | __ | 1 7/8" | 2 1/2" | 10 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 000000 |
| 2 | __ | 1 7/8" | 2 1/2" | 20 psi @ 70° F | -40° | 180° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Indicator Ball | __ | 0000000 | 000000 |
Easy-View Sights
View tank contents from multiple angles through the plastic domed window.
Zinc-plated steel sights have a shatter-resistant window.
Plastic sights have an impact-resistant window and brass threads.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Window Dia. | Hex Size | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Each | |
Zinc-Plated Steel | ||||||||||
NPT Male Thread | ||||||||||
| 3/4 | 1" | 1 1/4" | 10 psi @ 70° F | 0° | 160° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 000000 | 000000 |
| 1 | 1" | 1 1/2" | 10 psi @ 70° F | 0° | 160° | Water, Hydraulic Fluid, Diesel Fuel | Plastic | Neoprene Rubber | 000000 | 00000 |
| 1 1/4 | 1 1/4" | 1 7/8" | 10 psi @ 70° F | 0° | 160° | Water, Hydraulic Fluid, Diesel Fuel | Plastic | Neoprene Rubber | 000000 | 00000 |
| 1 1/2 | 1 5/8" | 2 1/8" | 10 psi @ 70° F | 0° | 160° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 000000 | 00000 |
Plastic | ||||||||||
NPT Male Thread | ||||||||||
| 1/4 | 3/8" | __ | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | __ | 0000000 | 00000 |
| 3/8 | 1/2" | __ | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | __ | 0000000 | 00000 |
Easy-View All-Plastic Sights
Machined from one piece of stain- and impact-resistant plastic. They have a domed window so you can view tank contents from multiple angles.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Window Dia. | Max. Pressure | Min. | Max. | For Use With | Window Material | Each | |
Plastic | ||||||||
NPT Male Thread | ||||||||
| 1/2 | 7/8" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 000000 |
| 3/4 | 1 1/8" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 00000 |
| 1 | 1 3/8" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 00000 |
| 1 1/4 | 1 3/4" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 00000 |
| 1 1/2 | 2" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 00000 |
| 2 | 2 1/2" | 65 psi @ 70° F | -40° | 180° | Hydraulic Fluid | Plastic | 0000000 | 00000 |