Inlet Fittings | McMaster-Carr

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Maximum Pressure @ Temperature

110 psi @ -350° F

200 psi @ -350° F

1,800 psi @ 0° F

2,000 psi @ 50° F

120 psi @ 60° F

150 psi @ 60° F

400 psi @ 60° F

15 psi @ 65° F

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150 psi @ 65° F

4.5 psi @ 70° F

10 psi @ 70° F

14.5 psi @ 70° F

15 psi @ 70° F

20 psi @ 70° F

25 psi @ 70° F

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Stainless Steel

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Threaded on Both Ends

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Compliant with Exemptions

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Stainless Steel

Maximum Temperature

Less than 100° F

100° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

Thread Size

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61,925 Products

Fluid Handling

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Pipe and Fittings

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

23,538 products

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

Pipe Expansion Joints

Pipe Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

Pipe Traps

Create a seal that prevents the backflow of gas

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

17,146 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

Junction Blocks

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

Propane Tank Valves

Propane Tank Valves

Start and stop the flow of propane from a tank

Manual On/Off Valves

Manual On/Off Valves

Start and stop flow through a line

Diverting Valves

Diverting Valves

Redirect flow between ports

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

Valve Union Fittings

Valve Union Fittings

Mating parts join valves to a line for quick connection and removal

Flow-Adjustment Valves

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

Air Valves

Fill tanks, tires, and other pressurized equipment

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

Vacuum Breakers

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

Float Switches

Start process equipment such as pumps and motors when the liquid in your tank reaches the float

Float Valves

Open or close a pipe connection when liquids in a container reach a set level; also known as ballcocks

Flow-Adjustment Valve Manifolds

Flow-Adjustment Valve Manifolds

Control flow to multiple points from one source

Sump Pump Backflow-Prevention Valves

Sump Pump Backflow-Prevention Valves

Block dirty water from returning to your sump pump

Air-Exhaust Valves

Air-Exhaust Valves

Vent or divert exhaust to speed up the operation of air cylinders, actuators, and other equipment

Flow-Regulating Valves

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

Backflow-Prevention Valves

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

Directional Control Valves

Directional Control Valves

Manage the flow of fluids to move equipment in air- and hydraulic-powered systems

Air Vent Valves

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

Sampling Valves

Sampling Valves

Drain a small amount of liquid or gas for inspection without disrupting flow

Valve Bodies

Attach to actuators to automatically or manually control flow in your line

Flow Switches

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

Float Valve Bodies

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

Air Pulse Valves

Air Pulse Valves

Convert continuous flow into bursts that reduce air consumption in dryers and dust collectors

Motor-Actuated On/Off Valves

Motor-Actuated On/Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

Air-Actuated On/Off Valves

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

Solenoid On/Off Valves

Solenoid On/Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

Liquid-Dispensing Metering Valves

Liquid-Dispensing Metering Valves

Program to dispense a specific amount of liquid every time and shut off when set amount is reached

Flow Sights

Visually confirm flow and inspect liquid color and clarity

Flow Transmitters

Flow Transmitters

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

Flowmeters

Measure the flow rate of liquid or gas through your system

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

Pressure-Relief Valves

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

Pressure-Relief Discs

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Compressed Gas Valves

Compressed Gas Valves

Check and adjust the pressure of compressed gas in tanks; also known as Schrader valves

Vacuum-Regulating Valves

Vacuum-Regulating Valves

Control the amount of air that a vacuum pump draws from your system to maintain vacuum levels

Pressure-Regulating Valves

Pressure-Regulating Valves

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

Sump Pumps

Drain water and sewage water from sump pits, loading docks, and cooling towers

Gear Pumps

Create fixed liquid flow rates to cool engines, power hydraulic equipment, and extract liquids

Piston Pumps

Move fluids in high-pressure applications, such as testing pipelines, tanks, and valves

Rotary Vane Pumps

Rotary Vane Pumps

Evenly move water or hydraulic fluids at high pressures in low-flow applications

Condensate Pumps

Condensate Pumps

Collect and remove condensate from HVAC and refrigeration systems

Submersible Pumps

Submersible Pumps

Circulate liquids in small tanks, cooling baths, and other low-flow applications

Dewatering Pumps

Dewatering Pumps

Remove water or sewage water from jobsites and flooded areas without sump pits

Centrifugal Pumps

Centrifugal Pumps

Force liquids through pipes or closed circuits for heating and cooling or filling and emptying tanks

Test Pumps

Force air or liquid through your system to look for leaks; often called hydrostatic test pumps

Fluid and Air Evacuators

Fluid and Air Evacuators

Connect to compressed air to extract oil, coolant, and brake fluid from tanks and brake systems

Differential Pressure and Vacuum Gauges

Differential Pressure and Vacuum Gauges

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

Differential Pressure Gauges

Differential Pressure Gauges

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

Steam Traps

Extract condensation from lines without losing any steam

Tank Mixing Nozzles

Tank Mixing Nozzles

Circulate liquid in tanks to keep solids from settling

Mixing Valves

Blend hot and cold water, steam, or oil to maintain a set outlet temperature and prevent scalding

Proportional Mixers

Proportional Mixers

Dilute detergents, sanitizers, coolants, and soluble oils directly from your drum

Power Transmission

Compressed Air Regulators

Compressed Air Regulators

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

Safety Lockout Valves

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

Compressed Air Filter/Regulator Manifolds

Compressed Air Filter/Regulator Manifolds

Purify air from a single supply and distribute it to multiple locations

Compressed Air Filter/Regulators

Compressed Air Filter/Regulators

Simultaneously clean air that's running through a system and control its pressure

Compressed Air Filter/Regulator/Lubricators

Compressed Air Filter/Regulator/Lubricators

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

Compressed Air Regulator Manifolds

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

Compressed Air Filter/Regulator/Lubricator Manifolds

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

Compressed Air Regulator Locks

Compressed Air Regulator Locks

Lock over your regulator knob to prevent unwanted pressure changes

Air Flow Control Valves

Air Flow Control Valves

Control the speed of air-powered equipment by adjusting the volume of airflow entering or exiting

Hydraulic Power Units

Hydraulic Power Units

Create and supply hydraulic pressure to keep hydraulic systems running

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

Hydraulic Check Valves

Hydraulic Check Valves

Open to allow hydraulic fluid flow in one direction and close when flow stops or reverses

Air Flow Check Valves

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

Hydraulic Flow-Adjustment Valves

Hydraulic Flow-Adjustment Valves

Turn the knob to gradually adjust the flow of hydraulic fluid

Air to Hydraulic Power Units

Air to Hydraulic Power Units

Power a hydraulic cylinder with air to avoid the setup, cost, and mess of hydraulic fluid

Hydraulic On/Off Valves

Hydraulic On/Off Valves

Control the flow in high-pressure hydraulic systems

Material Handling

Hydraulic Jack Hose and Fittings

Hydraulic Jack Hose and Fittings

Convey hydraulic fluid between hydraulic jacks and their power source

Jack Pumps

Pump hydraulic oil into jack rams to create hydraulic jacks

Facility and Grounds Maintenance

Toilet Flush Valves

Toilet Flush Valves

Release water from a plumbing line or toilet tank into the bowl

Shower Valves

Control water and regulate temperature to prevent scalding

Urinal Flush Valves

Urinal Flush Valves

Release water from a plumbing line into the urinal bowl

Showers

Hook up to a water supply near a drain for a convenient utility shower

Toilet Tank Replacement Parts

Toilet Tank Replacement Parts

Replace parts such as flappers, fill valves, and floats in your toilet tank

Drinking Fountain Nozzles

Drinking Fountain Nozzles

Dispense water from fountains; also known as bubblers

Water Supply Stop Valves

Water Supply Stop Valves

Shut off water to faucets, toilets, and fountains

Garden Hose Nozzles

Garden Hose Nozzles

Control the flow from a garden hose for spraying and washing

Garden Hose Faucets

Garden Hose Faucets

Connect garden hose to lines coming from a building or the ground

Siphon Guns

Spray liquid and air at the same time to produce a mist of liquids or chemicals

Garden Hose Valves

Garden Hose Valves

Start and stop the flow of water through your garden hose

Safety Equipment

Fire Hydrants

Fight fires in areas around your facility that city-installed hydrants don’t reach

Fire Post Indicators

Fire Post Indicators

Open and close water supply valves for fire systems buried underground or in a wall

Fire Hose Fittings

Fire Hose Fittings

Mount your fire hose to hydrants and washdown equipment, or join lengths of hose

Shower Station Valves

Shower Station Valves

Replace valves on your shower station

Fabricating and Machining

Abrasive Blasting Nozzle Couplings

Abrasive Blasting Nozzle Couplings

Secure your blasting nozzle to your hose

Lubricating

Oil Dispensing Stations

Oil Dispensing Stations

Connect to a bulk oil container to fill hand-held dispensers

Grease Fitting Manifolds

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

Coolant Hose and Fittings

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

Oil-Dispensing Pumps

Oil-Dispensing Pumps

Deliver controlled amounts of oil at specific intervals to keep equipment lubricated

Oil Dispenser Guns

Oil Dispenser Guns

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

Coolant Dispensers

Coolant Dispensers

Deliver coolant to workpieces with ready-to-use hose and fittings

Grease-Dispensing Pumps

Grease-Dispensing Pumps

Automate the flow of grease with air or battery power instead of applying it by hand

Oil-Dispensing Pump Metering Valves

Oil-Dispensing Pump Metering Valves

Add to manual and electric pumps to dispense the right amount of oil to different lubrication points

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Containers, Storage, and Furniture

Drum Faucets

Control the flow of liquid from drums, tanks, carboys, and other containers

Building and Machinery Hardware

T-Slotted Framing Manifolds

T-Slotted Framing Manifolds

Distribute air or liquid from a single supply to multiple areas in a T-slotted framing structure

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