NPT Gauges | McMaster-Carr

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Connection Location

Pipe Size

For Use With

Alcohol-Based Solvents

Grease Fittings

Liquids with Solids

Dial Diameter

Dial Type

Thread Type

Metric Trapezoidal

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Pressure Numeric Increments

Scale Type

Measurement Unit

Cubic Centimeters

Cubic Meters per Hour

Gallons per Hour

Gallons per Minute

Inches of Mercury

Inches of Water

Kilograms per Square Centimeter

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999.9 psi

2,000 psi to 9,999.9 psi

10,000 psi to 19,999.9 psi

20,000 psi or greater

Less than 10,000 kPa

10,000 kPa to 19,999 kPa

20,000 kPa to 29,999 kPa

30,000 kPa to 99,999 kPa

100,000 kPa or greater

Measures

Differential Pressure

Differential Vacuum

Relative Humidity

Case Material

Stainless Steel

Graduations

Display Type

Maximum Continuous Pressure

Gender

Fitting Connection

Connection Material

Stainless Steel

Connects To

Lens Material

Polyurethane Rubber

Mounting Position

Liquid Type

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

9,338 Products

Fluid Handling

Pressure Gauges

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

Pressure and Vacuum Gauges

Pressure and Vacuum Gauges

Measure pressure and vacuum in air and fluid lines, pumps, and refrigeration systems

Vacuum Gauges

Take vacuum readings in pumps, packaging equipment, and suction lines

Pressure Test Gauges

Pressure Test Gauges

Check and calibrate pressure gauges, transmitters, and equipment to maintain accuracy

Differential Pressure Gauges

Differential Pressure Gauges

Display the difference in pressure between two points in your air and fluid systems

Differential Pressure and Vacuum Gauges

Differential Pressure and Vacuum Gauges

Show changes in pressure and vacuum to monitor fans, blowers, and filters

Gauge Siphon Tubes

Gauge Siphon Tubes

Fill with water to protect dry gauges from steam and high-temperature liquids; also called pigtails

Pressure Transmitters

Pressure Transmitters

Send pressure readings to controllers and remote displays

Differential Pressure Transmitters

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

Pressure and Vacuum Transmitters

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

Vacuum Test Gauges

Vacuum Test Gauges

Verify that equipment is taking accurate vacuum measurements

Vacuum Transmitters

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

Pressure Indicators

Pressure Indicators

Turn green when your compressed air line reaches a certain psi

Flowmeters

Measure the flow rate of a liquid or gas

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

Flow Transmitters

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

Flow Sights

Visually confirm flow and inspect liquid color and clarity

Sights

Observe and monitor the contents of pipes, tanks, and other containers

Liquid-Level Transmitters

Liquid-Level Transmitters

Send liquid-level data to logging and monitoring equipment

Thermowells

Prevent damage to thermometers and temperature probes in pressurized tanks and pipelines

Temperature and Humidity Transmitters

Temperature and Humidity Transmitters

Regulate heating and cooling by sending temperature and humidity levels to PLCs and controllers

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

Thermocouples

Measure and transmit liquid, gas, and surface temperature

Thermocouple Connectors

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

Thermocouple and RTD Protection Tubes

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

Pressure-Regulating Valves

Pressure-Regulating Valves

Reduce inlet pressure to a lower outlet pressure to protect sensitive equipment

Flow Switches

Turn equipment on or off when flow rate reaches a set point

Measuring and Inspecting

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

Ring Gauges

Confirm your workpiece's outer diameter or external threads are within tolerance

Thread Size Identifiers

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

Pipe Size Measuring Kits

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

Tire Gauges

Check tire pressure

Refrigerant Pressure Testing Manifolds

Refrigerant Pressure Testing Manifolds

Monitor refrigerant pressure when servicing air conditioning systems

Calibration Columns

Calibration Columns

Calibrate the flow rate of metering pumps

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

Power Transmission

Compressed Air Regulators

Compressed Air Regulators

Ensure continuous, safe operation of air-powered equipment by controlling air pressure

Compressed Air Regulator Manifolds

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

Compressed Air Filter/Regulator/Lubricators

Compressed Air Filter/Regulator/Lubricators

Deliver clean, lubricated air at the desired pressure to a component in your line

Lubricating

Oil Dispenser Guns

Oil Dispenser Guns

Pair with container-mount dispensers to control the flow of oil

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)