Oil Flow Sights | McMaster-Carr

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463 Products

Flow Sights for Water, Oil, Air, and Inert Gas

Flow Sights with Indicator for Water and Oil

The indicator moves when flow is present, so it’s easy to visually confirm flow from a distance.

Flow Sights for Water and Oil

Often used in cooling, lubrication, and process systems.

Compact Flow Sights for Water and Oil

The low-profile body fits in areas with limited clearance.

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.

Full-View Flow Sights for Water and Oil

A large tubular window provides an unobstructed view of liquid color, clarity, and movement from multiple angles.

Full-View Flow Sights with
Indicator for Water and Oil

A ball indicator increases the visibility of flow for checking at a distance.

High-Temperature Flow Sights for Water and Oil

Withstand twice the temperature of standard sights. These are rated for temperatures up to 400° F.

High-Pressure Flow Sights for Water and Oil

Rated for more than double the pressure of standard flow sights, these can withstand pressures up to 400 psi.

Panel-Mount Flow Sights for
Water, Oil, and Inert Gas

The included mounting ring lets you install these sights in instrument panels.

Flow Sights with Barbed Fittings
for Water, Oil, Air, and Inert Gas

Barbed fittings slide into soft plastic and rubber tubing.

Liquid-Level Indicators

High-Pressure Oil-Level Indicators

Monitor hydraulic fluid or oil level in pressurized applications, such as hydraulic systems where overflow is a concern.

Easy-View High-Pressure Oil-Level Indicators

The nylon body and window make these indicators shatter resistant.

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.

Oil-Level Indicators

Monitor hydraulic fluid or oil level in gear boxes, crank cases, and other reservoirs.

Chemical-Level Indicators

Check the level of liquids containing chemicals such as alcohol-based solvents, boric acid, and sodium bicarbonate.

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.

Shatter-Resistant Oil-Level
and Temperature Indicators

The nylon body and window make these indicators shatter resistant.

Oil-Level and Temperature Indicators

Simultaneously monitor the hydraulic fluid or oil level and temperature in gear boxes, crank cases, and other reservoirs.

High-Pressure Oil-Level and Temperature Indicators

Check both the temperature and the hydraulic fluid or oil level in a pressurized system.

Heavy Duty Level Indicators

Monitor liquid level in applications that have vibration, high pressures, and high temperatures. These indicators are also known as armored level gauges.

Flow Sights for Water, Oil, Air, and Inert Gas

Flow Sights with Indicator for Water and Oil

Flow Sights for Water and Oil

Compact Flow Sights for Water and Oil

Compact Flow Sights withIndicator for Water and Oil

Full-View Flow Sights for Water and Oil

Full-View Flow Sights withIndicator for Water and Oil

High-Temperature Flow Sights for Water and Oil

High-Pressure Flow Sights for Water and Oil

Panel-Mount Flow Sights forWater, Oil, and Inert Gas

Flow Sights with Barbed Fittingsfor Water, Oil, Air, and Inert Gas

Liquid-Level Indicators

High-Pressure Oil-Level Indicators

Easy-View High-Pressure Oil-Level Indicators

Easy-View Oil-Level Indicators

Oil-Level Indicators

Chemical-Level Indicators

Flexible Easy-View Liquid-Level Indicators

Shatter-Resistant Oil-Leveland Temperature Indicators

Oil-Level and Temperature Indicators

High-Pressure Oil-Level and Temperature Indicators

Heavy Duty Level Indicators

Compact Flow Sights with
Indicator for Water and Oil

Full-View Flow Sights with
Indicator for Water and Oil

Panel-Mount Flow Sights for
Water, Oil, and Inert Gas

Flow Sights with Barbed Fittings
for Water, Oil, Air, and Inert Gas

Shatter-Resistant Oil-Level
and Temperature Indicators