Oil Flow Sights | McMaster-Carr

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	For Use With For Use With

Fuel Oil

Mineral Oil

Oil

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

UNF

	Body Material Body Material

Polymethylpentene Plastic

	Connection Style Connection Style


Threaded	Barbed

	Maximum Pressure Maximum Pressure

	Connection Type Connection Type


Pipe	Tube

	Mounting Orientation Mounting Orientation

Horizontal

Vertical

Any Position

	Maximum Temperature Maximum Temperature

	Indicator Type Indicator Type

	For Minimum Tube ID For Minimum Tube ID

3/16"

1/4"

	Mounting Location Mounting Location

Inline

Panel

	Direction of Flow Direction of Flow

	Window Material Window Material

Glass

Plastic

	Window Type Window Type

	Gender Gender

Female

Male

	End-to-End Length End-to-End Length

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Seal Material Seal Material

Rubber

Plastic

Fiber/SBR Rubber

	Minimum Temperature Minimum Temperature

	Indicator Material Indicator Material

Plastic

Stainless Steel

Polypropylene Plastic

Polystyrene Plastic

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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474 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.

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

Barbed fittings slide into soft plastic and rubber tubing.

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

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

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.

Oil-Level Indicators

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

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.

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.

Chemical-Level Indicators

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

Shatter-Resistant Oil-Level and Temperature Indicators

The nylon body and window make these indicators shatter resistant.

High-Pressure Oil-Level and Temperature Indicators

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

Oil-Level and Temperature Indicators

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

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 with Indicator for Water and Oil

Full-View Flow Sights for Water and Oil

Full-View Flow Sights with Indicator for Water and Oil

High-Temperature Flow Sights for Water and Oil

High-Pressure Flow Sights for Water and Oil

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

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

Liquid-Level Indicators

High-Pressure Oil-Level Indicators

Easy-View High-Pressure Oil-Level Indicators

Oil-Level Indicators

Easy-View Oil-Level Indicators

Flexible Easy-View Liquid-Level Indicators

Chemical-Level Indicators

Shatter-Resistant Oil-Level and Temperature Indicators

High-Pressure Oil-Level and Temperature Indicators

Oil-Level and Temperature Indicators

Heavy-Duty Level Indicators

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