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Maximum Pressure @ Temperature
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Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas

Ball Indicator

Rotor Indicator
Monitor liquid movement, color, and clarity in tube systems—these sights have barbed fittings that slide into soft plastic and rubber tubing. They have a clear body and an indicator that moves when flow is present, so you can visually confirm flow from a distance.
Indicator | ||||||||||
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For Tube ID | Temp. Range, °F | End-to-End Lg. | Ht. | Max. Pressure | Direction of Flow | Material | Color | For Use With | Each | |
Ball Indicator | ||||||||||
Polycarbonate Plastic Body | ||||||||||
1/4" to 3/8" | 32° to 180° | 3" | 2 1/4" | 10 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | Water, Oil, Air, Inert Gas | 0000000 | 000000 |
Rotor Indicator | ||||||||||
Polymethylpentene Plastic Body | ||||||||||
1/4" to 7/16" | 32° to 140° | 3 1/2" | 1 9/16" | 20 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Polypropylene Plastic | Blue | Water, Mineral Oil, Air, Inert Gas | 0000000 | 00000 |
Polystyrene Plastic Body | ||||||||||
3/16" to 1/4" | 0° to 190° | 2" | 1" | 10 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Polystyrene Plastic | Blue | Water, Oil, Air, Inert Gas | 0000000 | 00000 |
Panel-Mount Flow Sights for Water, Oil, and Inert Gas

The included mounting ring lets you install these sights in instrument panels. They have three ball indicators that bounce in the domed-top window to show flow in your line.
Flow Sights | |||||||||||||||
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Indicator | Repair Kits | ||||||||||||||
Pipe Size | Thread Type | Gender | Temp. Range, °F | Window Dia. | End-to-End Lg. | Ht. | Max. Pressure | Panel Cutout Dia. | Direction of Flow | No. of | Material | Each | Each | ||
Brass Body | |||||||||||||||
1/4 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 0000000 | 00000000 | 000000 |
3/8 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
1/2 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
3/4 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
1 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 5/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |