Filter by
Pipe Size
Thread Type
Thread Size
DFARS Compliance
Sights
NPTF And NPT Threads For Clear Liquid
NPTF And NPT Threads For Dark Liquid
BSPP Threads For Clear Liquid
BSPP Threads For Dark Liquid
These sights have a glass window. Screw them into threaded holes on tanks, gear cases, bearing housings, and mixers to see inside.
Sights with BSPP (British Standard Pipe Parallel) threads are often used with imported equipment.
Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
Aluminum sights have good corrosion resistance.
303 stainless steel sights are more corrosion resistant than brass, steel, and aluminum sights.
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 | Features | Each | |
For Clear Liquid | |||||||||||
Brass | |||||||||||
NPTF Male Thread | |||||||||||
| 1/4 | 1/4" | 5/8" | 150 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 000000 |
| 1/4 | 1/4" | 5/8" | 675 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/8 | 3/8" | 3/4" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 0000 |
| 3/8 | 3/8" | 3/4" | 415 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 0000 |
| 1/2 | 1/2" | 7/8" | 250 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/8" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/8" | 200 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/8" | 1 3/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/8" | 1 3/4" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 3/8" | 2" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 3/8" | 2" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 1 7/8" | 2 1/2" | 10 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 1 7/8" | 2 1/2" | 20 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 000000 |
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
Steel | |||||||||||
NPT Male Thread | |||||||||||
| 1/2 | 1/2" | 15/16" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 0000 |
| 1 | 1" | 1 3/8" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 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 | 0000000 | 00000 |
| 1 1/2 | 1 1/2" | 2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 00000 |
| 2 | 2" | 2 1/2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 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 | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/16" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 00000 |
Aluminum | |||||||||||
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/4" | 1 3/4" | 180 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
303 Stainless Steel | |||||||||||
NPT Male Thread | |||||||||||
| 1/4 | 1/4" | 5/8" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/8 | 3/8" | 3/4" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 5/8" | 1" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/4" | 1 3/4" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 1/2" | 2" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 2" | 2 1/2" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 000000 |
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 000000 | 00000 |
For Dark Liquid | |||||||||||
Brass | |||||||||||
NPTF Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 0000 |
| 3/8 | 3/8" | 3/4" | 415 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 250 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/8" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/8" | 200 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/8" | 1 3/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/8" | 1 3/4" | 60 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 3/8" | 2" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 3/8" | 2" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 1 7/8" | 2 1/2" | 10 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 1 7/8" | 2 1/2" | 20 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 000000 |
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 000000 | 00000 |
Steel | |||||||||||
NPT Male Thread | |||||||||||
| 1/2 | 1/2" | 15/16" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 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 | 0000000 | 00000 |
| 1 1/2 | 1 1/2" | 2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 00000 |
| 2 | 2" | 2 1/2" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 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 | 0000000 | 00000 |
| 3/4 | 3/4" | 1 1/16" | 125 psi @ 70° F | -40° | 250° | Water, Hydraulic Fluid, Diesel Fuel | Glass | __ | Fused Window | 0000000 | 00000 |
Aluminum | |||||||||||
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/4" | 1 3/4" | 180 psi @ 70° F | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
303 Stainless Steel | |||||||||||
NPT Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1/2 | 5/8" | 1" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 3/4 | 3/4" | 1" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/4 | 1 1/4" | 1 3/4" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 1 1/2 | 1 1/2" | 2" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 00000 |
| 2 | 2" | 2 1/2" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | __ | 0000000 | 000000 |
BSPP Male Thread | |||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 0000000 | 00000 |
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 0000000 | 00000 |
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 0000000 | 00000 |
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | 0° | 350° | Water, Hydraulic Fluid, Diesel Fuel | Glass | Fluoroelastomer Rubber | __ | 0000000 | 00000 |
Shatter-Resistant Sights
The window and body are made from a single piece of plastic, making these sights more shatter resistant than sights with a glass window. They are not rated for pressure.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Size | Window Dia. | Hex Size | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Each | |
Plastic | |||||||||||
NPT Male Thread | |||||||||||
| 1/2 | __ | 1/2" | 1" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 00000 |
| 3/4 | __ | 5/8" | 1 1/4" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 1 | __ | 7/8" | 1 1/2" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 00000 |
BSPP Male Thread | |||||||||||
| 1/4 | __ | 3/8" | 5/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 3/8 | __ | 3/8" | 3/4" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 1/2 | __ | 1/2" | 7/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 3/4 | __ | 3/4" | 1" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 1 | __ | 1" | 1 3/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 0000 |
| 1 1/4 | __ | 1 1/8" | 1 5/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 0000000 | 00000 |
Metric Male Thread | |||||||||||
| __ | M16 × 1.5 mm | 7/16" | 3/4" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
| __ | M20 × 1.5 mm | 9/16" | 7/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
| __ | M25 × 1.5 mm | 11/16" | 1 1/16" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
| __ | M27 × 1.5 mm | 13/16" | 1 1/16" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
| __ | M30 × 1.5 mm | 7/8" | 1 3/16" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
| __ | M40 × 1.5 mm | 1 3/16" | 1 5/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 00000 |
UN/UNF (SAE Straight) Male Thread | |||||||||||
| __ | 1 1/16"-12 | 3/4" | 1 3/16" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 00000 |
| __ | 3/4"-16 | 1/2" | 7/8" | Not Rated | -20° | 210° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Plastic | Buna-N Rubber | 00000000 | 0000 |
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 | |||||||||||||
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 | 000000 |
| __ | 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 |
Brass | |||||||||||||
NPTF Male Thread | |||||||||||||
| 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" | 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 1/2 | __ | 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 |
| 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
Zinc-Plated Steel
Plastic
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 |
Weld-On Sights
With Bolt-On Window
With Bolt-On Window (Unassembled)
With Screw-Together Window
With Screw-Together Window (Unassembled)
Weld these sights to single-wall tanks. They’re often used to monitor contents in process vessels, mixers, and bulk containers.
316L stainless steel sights are more corrosion resistant than 304 stainless steel sights.
DIN 11851 rated sights meet dairy fitting standards.
Sights with a bolt-on window should be welded to a hole in your tank wall.
Sights with a screw-together window make it easier to access your tank and clean the window than sights with a bolt-on window. To install these sights, place the body in a hole on your tank wall and weld it. Then twist on the window and tighten with a spanner wrench.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | OD | Window Dia. | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Specifications Met | Each | |
304 Stainless Steel | |||||||||||
With Bolt-On Window | |||||||||||
| 4 11/16" | 5" | 3 1/2" | 60 psi @ 70° F | -40° | 300° | Water, Hydraulic Fluid | Glass | Silicone Rubber | __ | 0000000 | 0000000 |
316L Stainless Steel | |||||||||||
With Screw-Together Window | |||||||||||
| 2" | 3 5/8" | 2" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 2 1/2" | 4 7/16" | 2 1/2" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 3 1/8" | 5" | 3 1/8" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 4" | 5 13/16" | 4" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 5" | 7" | 5" | 90 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
Through-Wall Sights
For Clear Liquid
For Dark Liquid
Mount these sights from the inside of your tank and secure with a lock nut. They install through unthreaded holes in tank walls.
Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
303 stainless steel sights are more corrosion resistant than aluminum sights.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | Window Dia. | Hex Size | For Max. Tank Wall Thick. | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Includes | Each | |
For Clear Liquid | ||||||||||||
Aluminum | ||||||||||||
| 3/4" | 1/2" | 7/8" | 1/4" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
| 1" | 3/4" | 1 1/8" | 1/4" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/4" | 1" | 1 3/8" | 1/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 7/8" | 1 3/8" | 2" | 1/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 2 3/8" | 1 7/8" | 2 5/8" | 1/4" | 10 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
303 Stainless Steel | ||||||||||||
| 5/8" | 7/16" | 13/16" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 3/4" | 9/16" | 15/16" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1" | 13/16" | 1 1/4" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/4" | 1" | 1 1/2" | 1/4" | 100 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/2" | 1 5/16" | 1 3/4" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 3/4" | 1 9/16" | 2" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
| 2 1/4" | 1 15/16" | 2 1/2" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
For Dark Liquid | ||||||||||||
Aluminum | ||||||||||||
| 3/4" | 1/2" | 7/8" | 1/4" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1" | 3/4" | 1 1/8" | 1/4" | 50 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/4" | 1" | 1 3/8" | 1/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 7/8" | 1 3/8" | 2" | 1/4" | 25 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 2 3/8" | 1 7/8" | 2 5/8" | 1/4" | 10 psi @ 70° F | -40° | 180° | Water, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
303 Stainless Steel | ||||||||||||
| 5/8" | 7/16" | 13/16" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 3/4" | 9/16" | 15/16" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1" | 13/16" | 1 1/4" | 3/16" | 125 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/4" | 1" | 1 1/2" | 1/4" | 100 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 00000 |
| 1 1/2" | 1 5/16" | 1 3/4" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
| 1 3/4" | 1 9/16" | 2" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
| 2 1/4" | 1 15/16" | 2 1/2" | 7/16" | 50 psi @ 70° F | 0° | 225° | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Glass | Buna-N Rubber | Lock Nut | 0000000 | 000000 |
Press-Fit Through-Wall Sights
Press these sights into a hole in your tank wall; no additional mounting nuts are needed. They mount from the outside. The shatter-resistant plastic domed window allows you to view tank contents from multiple angles.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | OD | Window Dia. | For Max. Tank Wall Thick. | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Each | |
Zinc-Plated Brass | |||||||||||
| 1 1/4" | 1 1/4" | 1" | 9/32" | Not Rated | 0° | 160° | Water, Hydraulic Fluid, Diesel Fuel | Plastic | Neoprene Rubber | 0000000 | 000000 |
| 1 1/2" | 1 1/2" | 1 1/4" | 9/32" | Not Rated | 0° | 160° | Water, Hydraulic Fluid, Diesel Fuel | Plastic | Neoprene Rubber | 0000000 | 00000 |
| 2" | 2" | 1 5/8" | 9/32" | Not Rated | 0° | 160° | Water, Hydraulic Fluid, Diesel Fuel | Plastic | Neoprene Rubber | 0000000 | 00000 |
Easy-View Flanged Sights
Check the contents of your tank from multiple angles with the domed window on these sights. The window is plastic, so it’s shatter resistant. To mount these sights, fasten their extended flange to tank walls.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flange OD | Window Dia. | Bolt Circle Dia. | No. of Bolt Holes | For Screw Size | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Each | |
Zinc | ||||||||||||
| 2 1/4" | 1 1/4" | 1 7/8" | 4 | No. 8 | 10 psi @ 70° F | 0° | 160° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Plastic | Buna-N Rubber | 0000000 | 0000000 |
Flanged Sights
An extended flange makes these sights easy to bolt onto tank walls. Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | For Dark Liquid | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flange OD | Window Dia. | Bolt Circle Dia. | No. of Bolt Holes | For Screw Size | Max. Pressure | Min. | Max. | For Use With | Material | Window Material | Seal Material | Each | |
| 1 5/8" | 3/4" | 1 5/16" | 4 | No. 6 | 10 psi @ 70° F | -20° | 250° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Zinc | Glass | Buna-N Rubber | 0000000 | 000000 |
| 1 7/8" | 1" | 1 9/16" | 4 | No. 6 | 10 psi @ 70° F | -20° | 250° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Zinc | Glass | Buna-N Rubber | 0000000 | 00000 |
| 2 1/4" | 1 1/4" | 1 7/8" | 4 | No. 8 | 10 psi @ 70° F | -20° | 250° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Zinc-Plated Steel | Glass | Buna-N Rubber | 0000000 | 000000 |
| 2 9/16" | 1 1/2" | 2 5/32" | 4 | No. 8 | 10 psi @ 70° F | -20° | 250° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Zinc | Glass | Buna-N Rubber | 0000000 | 00000 |
| 3 1/8" | 2" | 2 11/16" | 4 | No. 10 | 10 psi @ 70° F | -20° | 250° | Water, Hydraulic Fluid (Petroleum Based), Diesel Fuel | Zinc-Plated Steel | Glass | Buna-N Rubber | 0000000 | 000000 |