Laboratory Cocks | McMaster-Carr

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

GHT

NPTF

	For Use With For Use With

	Body Material Body Material

	Connection Style Connection Style


Threaded	Barbed

Quick Turn

	Connection Type Connection Type


Pipe	Tube

Hose	Spout

Drain

	Handle Style Handle Style


Lever	T-Handle

Wheel	Wing Nut

Knob	Thumb Screw

	Shape Shape


30° Elbow	45° Elbow

70° Elbow	Straight

	Inlet Pipe Size Inlet Pipe Size

	Valve Type Valve Type

	Gender Gender

Male

Female

	Valve Function Valve Function

On/Off

Flow Adjustment

	Maximum Pressure Maximum Pressure

	For Tube ID For Tube ID

	Maximum Temperature Maximum Temperature

	Outlet Connection Type Outlet Connection Type


Drain	Hose

Pipe	Tube

	Material Material

Brass

Plastic

Stainless Steel

	Inlet Connection Type Inlet Connection Type


Pipe	Tube

	Overall Length Overall Length

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Inlet Gender Inlet Gender

Male

Female

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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137 Products

Flow and Level Monitoring and Control

Compact Threaded On/Off Valves

Install these low-profile valves in tight spots. Use with water, oil, air, and inert gas.

On/Off Valves with Barbed Fittings

Metal provides more durability than plastic. These valves have barbed fittings that grip onto tubing for a secure hold. Use them with water and air.

Plastic On/Off Valves with Barbed Fittings

Plastic provides a lightweight and economical alternative to metal. All valves have barbs that grip onto tubing for a secure hold. They’re for use with water, oil, air, and inert gas.

On/Off Valves with Quick-Turn Fittings

Also known as luer-lock couplings, quick-turn fittings consist of a plug and a socket that connect with a half turn, so you can easily connect and disconnect your line. Use these valves with water and oil.

On/Off Valves with Barbed Fittings for Chemicals

Barbs grip onto tubing, providing a secure hold. To withstand aggressive and corrosive solutions in chemical-processing applications, these valves have a plastic body and a chemical-resistant seal.

Compact Threaded On/Off Valves for Chemicals

For chemical-processing applications in confined areas, these valves have an EPDM seal and a PVC or CPVC body to withstand aggressive and corrosive solutions and a low-profile handle to fit in tight spots.

Plastic Threaded Flow-Adjustment
Valves with Garden Hose Outlet

For lightweight and corrosion-resistant alternative to metal, these valves are plastic. Attach garden hose to the valve outlet. Use with water. These valves gradually open and close to adjust and regulate flow.

Threaded Flow-Adjustment
Valves with Garden Hose Outlet

Attach garden hose to the valve outlet. Use with water. These valves gradually open and close to adjust and regulate flow.

Drainage Valves

Also known as stop cocks, install these valves on your tank for easy draining.

Easy-Grip Drainage Valves

The large knob makes these drainage valves easy to grip.

Plumbing Fixtures and Drains

On/Off Faucets with Garden Hose Outlet

These faucets turn on and off with a quarter turn of the handle.

Laboratory Flanges and Turrets

Provide a connection for hose cocks, needle valves, and nozzles by attaching these flanges and turrets to your supply pipe.