Instrumentation Valves | McMaster-Carr

	Pipe Size Pipe Size

1/8

1/4

3/8

1/2

3/4

	Thread Type Thread Type

NPT

BSPT

	Shape Shape

	Straight
	Tee
	90° Elbow
	5-Way
	4-Way
	Cross

	Body Material Body Material

Stainless Steel

Brass

Brass/Stainless Steel

	Maximum Pressure Maximum Pressure

	For Use With For Use With

	Connection Style Connection Style


Threaded	Yor-Lok

	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD

	Ball Material Ball Material

Stainless Steel

Brass

	Connection Type Connection Type


Pipe	Tube

	Valve Type Valve Type

Ball

Pressure Regulator

	Valve Function Valve Function

On/Off

Diverting

Pressure Regulation

	Gender Gender

Female

Male

	Handle Style Handle Style


Lever	T-Handle

Oval

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Vacuum Rating Vacuum Rating

29 in. of Hg

Not Rated

	Seal Material Seal Material

Plastic

Rubber

	Flow Coefficient (Cv) Flow Coefficient (Cv)

0.03
0.06
0.08
0.1
0.15
0.2
0.22
0.3
0.4
0.44
0.5
0.6
0.64
0.7
0.75
0.8
0.88
0.9
1.02
1.2
1.3
1.4
1.5
1.57
1.6
2.4
2.5
2.6
2.7
2.74
3.1
3.34
3.53
4.6
6.1
6.3
9.3
10.7
12
12.7
17.4
Not Rated

	Overall Length Overall Length

	Seat Material Seat Material

PTFE Plastic

PFA Plastic

PCTFE Plastic

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

View catalog pages (8)

Forward

How can we improve?

162 Products

About On/Off Valves

Panel-Mount Threaded On/Off Valves

For installation in instrument panels, these valves have threads and a hex nut below the handle. They’re for use with water, oil, air, and inert gas.

High-Pressure Threaded On/Off Valves

These valves are rated for at least three times the pressure of standard threaded valves. Use with water, oil, air, inert gas, and steam.

Panel-Mount On/Off Valves with Yor-Lok Fittings

Threads and a hex nut below the handle allow you to install these valves in instrument panels. For extra gripping power and a strong seal, they have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Use these valves with water, oil, air, inert gas, and steam.

On/Off Valves with Yor-Lok Fittings

For extra gripping power and a strong seal, the Yor-Lok fittings on these valves have two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. These valves are for use with water, oil, air, and inert gas.

On/Off Valves with Yor-Lok Fittings for Chemicals

For extra gripping power and a strong seal, these valves have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. They are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. All have a PTFE seal and a corrosion-resistant 316 stainless steel body that can stand up to aggressive and corrosive solutions in chemical-processing applications.

Panel-Mount Threaded Diverting Valves

Threads and a hex nut below the handle let you install these valves through instrument panels. They are for use with water, oil, air, and inert gas. All divert flow between ports.

Compact Threaded Diverting Valves

A metal body provides more strength and durability than plastic. These valves have a low-profile handle and a short end-to-end length to fit in tight spots. All are for use with water, oil, air, and inert gas. They divert flow between ports.

Diverting Valves with Yor-Lok Fittings

These valves divert flow between ports. Use with water, oil, air, and inert gas.

High-Purity Tank-Mount
Pressure-Regulating Valves for Inert Gas

Reduce contaminants in gases used in research sample systems, emission monitoring systems, chromatography, and other high-purity applications. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination.

High-Purity Tank-Mount
Pressure-Regulating Valves for Fuel Gases

Designed to reduce contaminants in high-purity applications using hydrogen and methane gas, these valves have a stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination.