Stop Valves | McMaster-Carr

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For Use With

Acetic Acid (White Vinegar)

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Pressure Drop Assisted

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Standard with Ratchet Opening

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DFARS Specialty Metals

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5,879 Products

Fluid Handling

On-Off Valves

Start and stop flow through a line

3,785 products

Flow-Adjustment Valves

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

7 products

Drain Valves

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

36 products

Diverting Valves

Redirect flow between ports

108 products

Tap Valves

Pierce copper tubing for a secondary line to humidifiers and ice makers; also known as saddle valves

1 product

Valve Handles and Knobs

Replace the handle on most types of valves

49 products

Directional Control Valves

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

69 products

Pilot Valves

Control air supply to the actuator in other valves

13 products

Valve Repair Kits

Maintain valves with replacement parts such as seals, plungers, and springs

161 products

Solenoid Coils

Replace the coil that actuates your flow-control valve

55 products

Sampling Valves

Drain a small amount of fluid for inspection without disrupting flow

7 products

Valve Union Fittings

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

34 products

Air-Exhaust Valves

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

20 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

890 products

Flame Arresters

Absorb heat from a fire in your gas pipeline to stop it from traveling back to the gas source

6 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

25 products

Facility and Grounds Maintenance

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

195 products

Sink Faucets

Manual and touch-free faucets for janitorial, restroom, and food service sinks

5 products

Flush Valve Converters

Make manual flush toilets and urinals touch-free

21 products

Pressurized-Tank Toilet Kits

Replace upper water supply, flush valve cartridge, or the whole system in pressurized-tank toilets

12 products

Urinal Flush Valves

Release water from a plumbing line into the urinal bowl

19 products

Toilet Flush Valves

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

18 products

Toilet Tank Replacement Parts

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

23 products

Garden Hose Faucets

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

31 products

Power Transmission

Air Flow Control Valves

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

9 products

Safety Equipment

Shower Station Valves

Replace valves on your shower station

3 products

Eye Wash Station Replacement Parts

Replace eye wash station parts such as spray heads, valves, handles, and bowls

12 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valves

Tap into refrigerant lines to drain and fill your system

15 products

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products

Containers, Storage, and Furniture

Drum Faucets

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

29 products