NPTF Gauges | McMaster-Carr

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377 Products

3-in-1 Pressure and Vacuum Gauges

These portable gauges have three different dials to display pressure and vacuum measurements on a low, medium, and high scale.

Flow Monitoring

Variable-Pressure Flowmeters for Gases

Measure the flow rate of gases in applications where pressure fluctuates, such as compressed air systems.

Any-Orientation Flowmeters

A spring piston instead of a float allows these flowmeters to measure flow rate in any mounting orientation.

High-Temperature and Pressure Flowmeters

Flow- and Pressure-Testing Flowmeters for Oil

Often used to find worn components or leaks, these flowmeters have a valve, so you can test the flow of oil from pumps and other equipment at different pressures.

Any-Orientation Flowmeters for Oil

With a spring piston instead of a float, these flowmeters measure the flow rate of oil in any mounting orientation.

High-Temperature and Pressure Flowmeters for Oil

If the oil in your line is too hot or pressurized for standard flowmeters, use these flowmeters to measure the flow rate.

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.

Compact Flow Sights for Water and Oil

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

Full-View Flow Sights with Indicator for Water and Oil

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

Level Monitoring

Sights

These sights have a glass window.

High-Visibility Sights

Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window.

High-Pressure Oil-Level Indicators

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

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.

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.

Pressure Gauges for Hydraulic Jacks

Monitor hydraulic oil pressure levels to guard against overload. These gauges are liquid filled to reduce needle vibration and include an adapter to mount the gauge in line with the hose.