Parker A-Lok-Compatible Tube Fittings

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1,513 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Yor-Lok Fittings for Stainless Steel Tubing

Use these fittings at pressures up to 9,700 psi. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.

Front and Back Sleeves for Yor-Lok
Fittings for Stainless Steel Tubing

Nuts for Yor-Lok Fittings for Stainless Steel Tubing

Cleaned and Bagged Yor-Lok
Fittings for Stainless Steel Tubing

For applications that require an extra level of cleanliness, these fittings are individually bagged to prevent contamination.

PTFE Sleeves for Yor-Lok Fittings

Made of plastic, these sleeves create a strong seal without damaging tubing.

Tube Supports for Yor-Lok Fittings

Use with soft plastic tubing to prevent the tube from collapsing.

Nuts for Extreme-Pressure Yor-Lok
Fittings for Stainless Steel Tubing

Extreme-Pressure Yor-Lok
Fittings for Stainless Steel Tubing

These fittings have the highest pressure rating of all the Yor-Lok tube fittings we offer.

Front and Back Sleeves for Extreme-Pressure
Yor-Lok Fittings for Stainless Steel Tubing

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Also known as KF, QF, and NW fittings, these fittings are for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases.

Ultra-High-Polish Gasket Fittings
for Stainless Steel Tubing

Polished to at least a 15 Ra finish on the inside, these fittings have an ultra-smooth interior surface that helps prevent contamination. They are also known as ultra-high-purity fittings.

Through-Wall Fittings for High-Vacuum Chambers

Transfer liquids and gasses into high-vacuum chambers with these assembled fittings, also known as feedthroughs.

Yor-Lok Fittings for Copper Tubing

Nuts for Yor-Lok Fittings for Copper Tubing

Front and Back Sleeves for
Yor-Lok Fittings for Copper Tubing

Use these sleeves with Yor-Lok nuts and fittings to create an extra-strong seal on copper tubing.

Tube Supports for Yor-Lok Fittings
for Copper Tubing

Yor-Lok Fittings for Steel Tubing

These fittings have two sleeves for extra gripping power. They bite into steel tubing as you tighten the nut to form a strong seal.

Nuts for Yor-Lok Fittings for Steel Tubing

Front and Back Sleeves for
Yor-Lok Fittings for Steel Tubing

Tube Fittings for Nickel Alloy Tubing

Ultra-Corrosion-Resistant Yor-Lok
Fittings for Nickel Alloy Tubing

With the best corrosion resistance of any metal fitting we offer, these Hastelloy fittings will stand up to aggressive chemicals and are resistant to pitting and stress cracking. Also known as instrumentation fittings, they include a nut with two sleeves.

Front and Back Sleeves for
Ultra-Corrosion-Resistant
Yor-Lok Fittings for Nickel Alloy Tubing

Nuts for Ultra-Corrosion-Resistant
Yor-Lok Fittings for Nickel Alloy Tubing

Acid-Resistant Yor-Lok
Fittings for Nickel Alloy Tubing

These Monel fittings have the corrosion resistance to handle hydrofluoric and sulfuric acid. Also known as instrumentation fittings, they include a nut with two sleeves.

Front and Back Sleeves for Acid-Resistant
Yor-Lok Fittings for Nickel Alloy Tubing

Nuts for Acid-Resistant Yor-Lok
Fittings for Nickel Alloy Tubing

Flow-Control Valves

Check Valves with Yor-Lok Fittings

Two sleeves give the fittings extra gripping power. They bite into tubing as you tighten the nut to form a strong seal. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.

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.

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

Easily access the handle of these valves while protecting your line behind an instrument panel. 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.

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

Flip the toggle to quickly turn these valves on and off. All have threads and a hex nut below the handle for installation 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. These valves are for use with water, oil, air, and inert gas.

On/Off Valves with Yor-Lok Fittings for Chemicals

On/Off Valves with Yor-Lok Fittings for Fuel

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. Use with diesel fuel, fuel oil, gasoline, and kerosene.