System of Measurement System of Measurement |
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Material Material |
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For Use With For Use With |
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Overall Height Overall Height |
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Shape Shape |
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 | Straight |
Fitting Material Fitting Material |
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Maximum Temperature Maximum Temperature |
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Mount Type Mount Type |
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Connection Style Connection Style |
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 | Threaded |
Window Height Window Height |
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Connection Type Connection Type |
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 | Pipe |
Gender Gender |
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Maximum Pressure Maximum Pressure |
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Seal Material Seal Material |
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Minimum Temperature Minimum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Thread Size Thread Size |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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High-Pressure Oil-Level Indicators
Screw-In Mount
Through-Wall Mount
Screw-In/Through-Wall Mount
Monitor hydraulic fluid or oil level in pressurized applications, such as hydraulic systems where overflow is a concern. These indicators have a metal gauge shield that protects the glass window from impact. Clear liquids magnify a red line at the back of the window, so their levels are easier to see.
304 stainless steel indicators resist corrosion better than aluminum indicators.
Screw-in indicators mount from the outside of your tank into threaded pipe or threaded holes.
Through-wall indicators mount from the inside of your tank through unthreaded holes. Secure with nuts on the inside of your tank.
Screw-in/through-wall indicators give you the option to mount from the inside or outside of your tank. Use the mounting nuts on the inside of your tank to attach them through unthreaded holes or thread them into pipe or threaded holes on the tank’s outside.
Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Connection Ctr.-to-Ctr. | Overall Ht. | Window Ht. | Body Wd. | For Max. Tank Wall Thick. | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Features | Includes | Each | |
Screw-In Mount—Aluminum | |||||||||||||
1/4 NPTF Male Thread | |||||||||||||
| 5" | 6 5/8" | 3 1/2" | 1 13/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 000000 |
| 6" | 7 5/8" | 4 1/2" | 1 13/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 7" | 8 5/8" | 5 1/2" | 1 13/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 13/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 1 13/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 13/16" | __ | 275 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 13/16" | __ | 270 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 15" | 16 5/8" | 13 1/2" | 1 13/16" | __ | 260 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 18" | 19 5/8" | 16 1/2" | 1 13/16" | __ | 240 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 24" | 25 5/8" | 22 1/2" | 1 13/16" | __ | 210 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 000000 |
3/8 NPTF Male Thread | |||||||||||||
| 5" | 6 5/8" | 3 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 7" | 8 5/8" | 5 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 3/4" | __ | 275 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 3/4" | __ | 270 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 15" | 16 5/8" | 13 1/2" | 1 3/4" | __ | 260 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 18" | 19 5/8" | 16 1/2" | 1 3/4" | __ | 240 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 24" | 25 5/8" | 22 1/2" | 1 3/4" | __ | 210 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 000000 |
1/2 NPTF Male Thread | |||||||||||||
| 5" | 6 5/8" | 3 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 7" | 8 5/8" | 5 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 9/16" | __ | 275 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 9/16" | __ | 270 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 15" | 16 5/8" | 13 1/2" | 1 9/16" | __ | 260 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 18" | 19 5/8" | 16 1/2" | 1 9/16" | __ | 240 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 24" | 25 5/8" | 22 1/2" | 1 9/16" | __ | 210 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 000000 |
| 30" | 31 1/2" | 28 1/2" | 1 9/16" | __ | 185 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 00000000 | 000000 |
3/4 NPTF Male Thread | |||||||||||||
| 5" | 6 5/8" | 3 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 9/16" | __ | 275 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 9/16" | __ | 270 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 15" | 16 5/8" | 13 1/2" | 1 9/16" | __ | 260 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 18" | 19 5/8" | 16 1/2" | 1 9/16" | __ | 240 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 00000 |
| 24" | 25 5/8" | 22 1/2" | 1 9/16" | __ | 210 psi @ 70° F | -40° | 250° | Brass | Glass | Red Line | __ | 0000000 | 000000 |
Screw-In Mount—304 Stainless Steel | |||||||||||||
1/4 NPT Male Thread | |||||||||||||
| 3" | 4" | 1 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 5" | 6" | 3 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 6" | 7" | 4 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 7" | 8" | 5 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 9" | 10" | 7 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 10" | 11" | 8 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 12" | 13" | 10 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
3/8 NPT Male Thread | |||||||||||||
| 3" | 4" | 1 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 5" | 6" | 3 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 6" | 7" | 4 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 7" | 8" | 5 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 9" | 10" | 7 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 10" | 11" | 8 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 12" | 13" | 10 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
1/2 NPT Male Thread | |||||||||||||
| 3" | 4" | 1 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 5" | 6" | 3 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 6" | 7" | 4 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 7" | 8" | 5 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 9" | 10" | 7 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 10" | 11" | 8 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 12" | 13" | 10 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
3/4 NPT Male Thread | |||||||||||||
| 3" | 4" | 1 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 5" | 6" | 3 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 6" | 7" | 4 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 7" | 8" | 5 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 9" | 10" | 7 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 10" | 11" | 8 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
| 12" | 13" | 10 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 00000000 | 000000 |
1/2"-20 UNF Male Thread | |||||||||||||
| 3" | 4" | 1 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 5" | 6" | 3 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 6" | 7" | 4 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 7" | 8" | 5 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 9" | 10" | 7 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 10" | 11" | 8 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
| 12" | 13" | 10 1/2" | 15/16" | __ | 125 psi @ 70° F | 0° | 300° | 304 Stainless Steel | Glass | Red Line | __ | 0000000 | 000000 |
Through-Wall Mount—Aluminum | |||||||||||||
1/2"-20 UNF Male Thread—For 1/2" Hole Dia. (2 Holes) | |||||||||||||
| 3" | 4 5/8" | 1 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 4" | 5 5/8" | 2 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 5" | 6 5/8" | 3 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 7" | 8 5/8" | 5 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 7/8" | 3/4" | 275 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 7/8" | 3/4" | 270 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
Screw-In/Through-Wall Mount—Aluminum | |||||||||||||
1/2"-20 UNF Male Thread—For 1/2" Hole Dia. (2 Holes) | |||||||||||||
| 3" | 4 5/8" | 1 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 4" | 5 5/8" | 2 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 5" | 6 5/8" | 3 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 7" | 8 5/8" | 5 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 9" | 10 5/8" | 7 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 1/8" | 1/2" | 275 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 1/8" | 1/2" | 270 psi @ 70° F | -40° | 250° | Aluminum | Glass | Red Line | Mounting Nuts | 0000000 | 00000 |
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 |