McMaster-Carr

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	Pipe Size Pipe Size

1/8

1/4

	Thread Type Thread Type

NPT

NPTF

UNF

	For Use With For Use With

Acetic Acid

Air

Alcohol-Based Solvents

	Body Material Body Material

	Connection Style Connection Style

	Connection Type Connection Type


Pipe	Tube

	Indicator Type Indicator Type

	Maximum Pressure Maximum Pressure

	Direction of Flow Direction of Flow

	Window Material Window Material

Glass

Plastic

	Window Type Window Type

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

	Seal Material Seal Material

Rubber

Plastic

	Window Diameter Window Diameter

	Gender Gender

Female

Male

	Shape Shape

Straight

90Â° Elbow

Tubular

	Indicator Color Indicator Color

	White		Green
	Blue		Orange
	Red		Gray
	Brown

	Overall Height Overall Height

	Window Length Window Length

	Material Material

	Window Height Window Height

	Mounting Orientation Mounting Orientation

Horizontal

Vertical

Any Position

	Mounting Location Mounting Location

Inline

Panel

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609 Products

Flow Sights

Flow Sights with Indicator
for Water and Oil

The indicator moves when flow is present, so itâ€™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 400Â° 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.

Quick-Clean Flow Sights for Water

To maintain a clear view of your process media without disrupting flow, twist the tubular window to clear debris and buildup with the internal wipers.

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, Air, and Inert Gas

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

Flow Sights for Chemicals

Built to withstand harsh chemicals.

Compact Flow Sights for Chemicals

About half the height of other flow sights for chemicals, these fit in areas with limited clearance.

Flow Sights for Food and Beverage

Made of FDA-listed materials, these sights can be used with food and beverage. They have sanitary quick-clamp connections for easy disassembly and cleaning.

Flow Sights for High Vacuum

Peer through the glass on these flow sights to see whatâ€™s happening in your high-vacuum line.

Liquid-Level Indicators

Oil-Level Indicators

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

High-Pressure Oil-Level Indicators

Monitor hydraulic fluid or oil level in pressurized applications.

Level Indicators with Shutoff Valve

Shutoff valves stop flow so you can clean and replace gauge glass without removing these indicators from your equipment.

Build-Your-Own Level
Indicators with Shutoff Valve

Combine a pair of valves with a gauge glass and four guard rods to build a complete level indicator.

Tubular Gauge Glass

Replace existing gauge glass or combine with valves and guard rods to build your own level indicator.

Shatter-Resistant Oil-Level
and Temperature Indicators

The nylon body and window make these indicators shatter resistant.

Oil-Level and Temperature Indicators

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

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Flow Sights

Flow Sights with Indicatorfor Water and Oil

Flow Sights for Water and Oil

Compact Flow Sightsfor Water and Oil

Compact Flow Sights withIndicator for Water and Oil

Full-View Flow Sightsfor Water and Oil

Full-View Flow Sights withIndicator for Water and Oil

High-Temperature FlowSights for Water and Oil

High-Pressure FlowSights for Water and Oil

Quick-Clean Flow Sights for Water

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

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

Flow Sights for Chemicals

Compact Flow Sights for Chemicals

Flow Sights for Food and Beverage

Flow Sights for High Vacuum

Liquid-Level Indicators

Oil-Level Indicators

High-Pressure Oil-Level Indicators

Level Indicators with Shutoff Valve

Build-Your-Own LevelIndicators with Shutoff Valve

Tubular Gauge Glass

Shatter-Resistant Oil-Leveland Temperature Indicators

Oil-Level and Temperature Indicators

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

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

Build-Your-Own Level
Indicators with Shutoff Valve

Shatter-Resistant Oil-Level
and Temperature Indicators