Compact Flow Sights for Water and Oil

The low-profile body fits in areas with limited clearance. These sights let you visually confirm flow and inspect liquid color and clarity. The back window can be backlit to increase the visibility of dark liquids.
Sights with a 303 stainless steel body are more corrosion resistant than sights with a brass or zinc-plated steel body.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Thread Type | Gender | Temp. Range, °F | Window Lg. | Hex Size | End-to-End Lg. | Max. Pressure | Direction of Flow | Each | |
Brass Body | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1/8 | NPTF | Female | -40° to 180° | 1" | 7/8" | 3 1/4" | 435 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 000000 |
1/4 | NPTF | Female | -40° to 180° | 1" | 7/8" | 3 1/2" | 435 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
3/8 | NPTF | Female | -40° to 180° | 1 1/8" | 1" | 4 1/4" | 425 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
1/2 | NPTF | Female | -40° to 180° | 1 1/4" | 1 1/4" | 4 5/8" | 380 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 000000 |
3/4 | NPTF | Female | -40° to 180° | 1 3/8" | 1 3/8" | 5 1/4" | 345 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 000000 |
1 | NPTF | Female | -40° to 180° | 1 1/2" | 1 5/8" | 6 1/4" | 270 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 000000 |
Zinc-Plated Steel Body | ||||||||||
1/8 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 2 1/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
1/4 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 2 1/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
3/8 | NPT | Female | 0° to 180° | 1 3/8" | 15/16" | 2 7/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
1/2 | NPT | Female | 0° to 180° | 1 3/8" | 1 1/16" | 3 5/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
3/4 | NPT | Female | 0° to 180° | 1 1/2" | 1 1/4" | 3 3/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
303 Stainless Steel Body | ||||||||||
1/8 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 2 1/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
1/4 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 2 1/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
3/8 | NPT | Female | 0° to 180° | 1 3/8" | 15/16" | 2 7/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
1/2 | NPT | Female | 0° to 180° | 1 5/16" | 1 1/16" | 3 5/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
3/4 | NPT | Female | 0° to 180° | 1 1/2" | 1 1/4" | 3 3/4" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 0000000 | 00000 |
Compact Flow Sights with Indicator for Water and Oil

For visual confirmation of flow from a distance, these sights have a ball indicator that moves when flow is present. They have a low-profile body for installation in pipelines with limited clearance. Backlight the back window to increase the visibility of dark liquids.
Sights with a 303 stainless steel body are more corrosion resistant than sights with a brass or zinc-plated steel body.
For technical drawings and 3-D models, click on a part number.
Indicator | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Temp. Range, °F | Window Lg. | Hex Size | End-to-End Lg. | Max. Pressure | Direction of Flow | Material | Color | Each | |
Brass Body | ||||||||||||
1/8 | NPTF | Female | -40° to 180° | 1" | 7/8" | 3 1/4" | 435 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
1/4 | NPTF | Female | -40° to 180° | 1" | 7/8" | 3 1/2" | 435 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
3/8 | NPTF | Female | -40° to 180° | 1 1/8" | 1" | 4 1/4" | 425 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
1/2 | NPTF | Female | -40° to 180° | 1 1/4" | 1 1/4" | 4 5/8" | 380 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
3/4 | NPTF | Female | -40° to 180° | 1 3/8" | 1 3/8" | 5 1/4" | 345 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
1 | NPTF | Female | -40° to 180° | 1 1/2" | 1 5/8" | 6 1/4" | 270 psi @ 150° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
Zinc-Plated Steel Body | ||||||||||||
1/8 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 3" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
1/4 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 3" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
3/8 | NPT | Female | 0° to 180° | 1 3/8" | 15/16" | 4 1/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
1/2 | NPT | Female | 0° to 180° | 1 3/8" | 1 1/16" | 5" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
3/4 | NPT | Female | 0° to 180° | 1 1/2" | 1 1/4" | 5 5/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
303 Stainless Steel Body | ||||||||||||
1/8 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 3" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
1/4 | NPT | Female | 0° to 180° | 1 1/16" | 13/16" | 3" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 00000 |
3/8 | NPT | Female | 0° to 180° | 1 3/8" | 15/16" | 4 1/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
1/2 | NPT | Female | 0° to 180° | 1 5/16" | 1 1/16" | 5" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
3/4 | NPT | Female | 0° to 180° | 1 1/2" | 1 1/4" | 5 5/8" | 125 psi @ 70° F | Bottom to Top, Left to Right, Right to Left, Top to Bottom | Nylon Plastic | White | 0000000 | 000000 |
Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas


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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 |
Flow Sights for Food and Beverage

Made of FDA-listed materials for use with food and beverage, these sights have sanitary quick-clamp connections and an electropolished 316 stainless steel body for easy disassembly and cleaning. They meet USP (United States Pharmacopeia) Class IV standard for food applications. Sights let you visually confirm flow and inspect liquid color and clarity. Backlight the back window to increase the visibility of dark liquids.
For technical drawings and 3-D models, click on a part number.
For Tube OD | Temp. Range, °F | Window Lg. | End-to-End Lg. | Ht. | Max. Pressure | Direction of Flow | Specifications Met | Each | |
316 Stainless Steel Body | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/2" | -20° to 300° | 3/4" | 3" | 1/2" | 150 psi @ 265° F | Any Direction | FDA Compliant 21 CFR 177.2600, USP Class IV | 0000000 | 0000000 |
3/4" | -20° to 300° | 1 1/8" | 3 3/8" | 3/4" | 150 psi @ 265° F | Any Direction | FDA Compliant 21 CFR 177.2600, USP Class IV | 0000000 | 000000 |
1" | -20° to 300° | 1 1/8" | 3 1/2" | 1" | 120 psi @ 265° F | Any Direction | FDA Compliant 21 CFR 177.2600, USP Class IV | 0000000 | 000000 |
1 1/2" | -20° to 300° | 1 1/2" | 4 1/8" | 1 1/2" | 115 psi @ 265° F | Any Direction | FDA Compliant 21 CFR 177.2600, USP Class IV | 0000000 | 000000 |
2" | -20° to 300° | 1 7/8" | 4 3/4" | 2" | 100 psi @ 265° F | Any Direction | FDA Compliant 21 CFR 177.2600, USP Class IV | 0000000 | 000000 |
Compact Flow Sights for Chemicals

About half the height of other flow sights for chemicals, these fit in areas with limited clearance. They provide an unobstructed view of liquid color, clarity, and movement through the tubular window. For excellent chemical resistance, they have a 316 stainless steel body and an FEP window.
For technical drawings and 3-D models, click on a part number.
Window | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Temp. Range, °F | Dia. | Lg. | End-to-End Lg. | Ht. | Max. Pressure | Direction of Flow | Each | |
316 Stainless Steel Body | |||||||||||
1/2 | NPT | Male | -100° to 250° | 5/8" | 4" | 9" | 1" | 150 psi @ 70° F | Any Direction | 0000000 | 0000000 |
1/2 | NPT | Male | -100° to 250° | 5/8" | 6" | 11" | 1" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1/2 | NPT | Male | -100° to 250° | 5/8" | 12" | 17" | 1" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1/2 | NPT | Male | -100° to 250° | 5/8" | 24" | 29" | 1" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1 | NPT | Male | -100° to 250° | 1 1/4" | 4" | 10 1/4" | 1 9/16" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1 | NPT | Male | -100° to 250° | 1 1/4" | 6" | 12 1/4" | 1 9/16" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1 | NPT | Male | -100° to 250° | 1 1/4" | 12" | 18 1/4" | 1 9/16" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |
1 | NPT | Male | -100° to 250° | 1 1/4" | 24" | 30 1/4" | 1 9/16" | 150 psi @ 70° F | Any Direction | 0000000 | 000000 |