Parker’s A-LOK® two ferrule compression tube fittings are designed to provide reliable leak-free connections for instrumentation, process and control, and analyzer applications that specify a two ferrule system. Manufactured to the highest quality standards, these tube fittings are available in a broad range of sizes, corrosion resistant materials and configurations.

As standard, Parker’s A-LOK® tube fitting are manufactured from heat code traceable 316 stainless steel. Other materials include 6Mo, Alloy 825, Alloy 625 and Alloy C-276. Straight fittings are machined from cold finished bar stock, while shaped bodies are machined from close grain forgings.

The fittings are available for imperial pipe sizes from 1/16” through to 2” O.D., and for metric sizes from 2 mm through to 25 mm O.D.

Features/Benefits:

Exceptionally wide choice of configuration styles;

  • Tube to male pipe
  • Tube to female pipe
  • Tube to tube unions
  • Port connectors
  • 37˚ flare (AN) to A-LOK
  • Tube to O-ring seal
  • Tube to welded systems
  • Analytical fittings
  • Barbed fittings

Parker Suparcase™ surface treatment process for superior material hardening, Hardened ferrules provide leak free connections, Silver plated nuts provide gall resistance during makeup.

Applications:
• Steam Service Lines
• Offshore Control Panels
• Sensing Lines

Fitting Type Compression
Tube Size 3/4″, 1″, 1/8″, 3/8″, 1/2″, 3/8″, 1/16″, 1/4″, 6 mm, 12 mm, 1/2″, 10 mm, 5/8″, 3/4″, 1/4″, 20 mm, 8 mm, 5/16″, 25 mm, 16 mm
Shape 37 Flare to Compression, Back Ferrule, BSPP Gauge Connector, BSPP Male Connector, BSPP Male Connector with ED Seal, Bulkhead Union, Cap, Drop Size Tee, Female Bulkhead Connector, Ferrule Set, Front Ferrule, Front Ferrule , Gauge Connector, Male Bulkhead C
Connection 1 Size 3/4″, 1″, 1/8″, 3/8″, 1/2″, 3/8″, 1/16″, 1/4″, 6 mm, 12 mm, 1/2″, 10 mm, 5/8″, 3/4″, 1/4″, 20 mm, 8 mm, 5/16″, 25 mm, 16 mm
Style 37° Flare (AN) to A-LOK®, Components, Tube to Female Pipe, Tube to Male Pipe, Tube to Tube Unions, Port Connectors, Tube to O-Ring Seal, Tube to Welded Systems, Tube to Tube
Connection 2 Size 3/4″, 1″, 1/8″, 3/8″, 1/2″, 3/8″, N/A, 1/4″, 1/2″, 10 mm, 12 mm, 6 mm, 1/4″, 5/8″, 3/4″, 1/16″, 5/16″, 20 mm, 25 mm, 8 mm, 16 mm
Connection 3 Thread Size (inch) N/A, 3/8″, 1/2″, 1/4″, 3/4″, 1/4″, 3/4″, 1″, 3/8″, 1/2″, 10 mm, 12 mm, 20 mm, 25 mm, 6 mm, 8 mm, 5/8″, 5/16″
Material 316 Stainless Steel, Alloy 625, 6Mo, Alloy 825, Brass, Alloy C-276, Steel