Industrial compression couplings are used to connect compatible vacuum tubing and piping sections in central vacuum, dust collection, pneumatic conveying, and bulk material handling systems. These mechanical fittings provide secure, removable connections without requiring permanent welding.
Vacuum-Tubing.com offers Morris Type Compression Couplings and Instalok™ Compression Couplings for industrial vacuum piping applications. Couplings are available in multiple sizes, bolt configurations, materials, and gasket options, depending on the product series.
Our industrial compression couplings are available in 2-bolt, 3-bolt, 4-bolt, and 5-bolt configurations to accommodate a wide range of industrial vacuum tubing and pneumatic conveying applications. Available options include multiple coupling sizes, galvanized or stainless steel construction, and gasket configurations selected for specific operating requirements.
Morris Type Compression Couplings are available in galvanized or stainless steel construction with gasket options for different operating requirements. These couplings are commonly used to connect straight-end tubing, elbows, branch fittings, and other compatible vacuum system components.
Proper coupling selection depends on tubing outside diameter, material, wall thickness, gasket compatibility, operating conditions, and the required connection method. Available bolt configurations and gasket options may vary by coupling size and product series.
Need help selecting the correct coupling? Contact Us for assistance with coupling sizes, bolt configurations, gasket materials, and compatibility with your industrial vacuum or pneumatic conveying system.
Morris-style bolted compression couplings are used for vacuum tubing and heavy-wall pipe applications where a reusable mechanical connection is required.
Bolted couplings are available in multiple sizes and bolt configurations to accommodate heavier-wall installations. Galvanized steel with plated hardware is standard, with stainless steel versions available for applicable sizes.
Inquire for actual part numbers and availability.
Additional sizes and custom configurations are available upon request.
Morris-style bolted compression couplings are commonly selected where a reusable mechanical connection, broad size range, and multiple gasket options are required.
| Common Name | Part No. for O.D. Tubing | Part No. for I.D. Pipe | Pipe O.D. |
|---|---|---|---|
| 1 1/2 | A 15 | B 150 | 1.90 |
| 1 3/4 | A175 | — | — |
| 2 | A 2 | B 200 | 2 3/8 |
| 2 1/8 | A2125 | — | — |
| 2 1/2 | A 25 | B 25 | 2 7/8 |
| 3 | A 3 | B 3 | 3 1/2 |
| 3 1/2 | A 35 | B 35 | 4 |
| 4 | A 4 | B 4 | 4 1/2 |
| 4 1/2 | A45 | — | — |
| 5 | A 5 | B 5 | 5.563 |
| 6 | A 6 | B 6 | 6 5/8 |
| 8 | A 8 | B 8 | 8 5/8 |
| 10 | A 10 | B 10 | 10 3/4 |
| 12 | A 12 | B 12 | 12 3/4 |
| 14 | A 14 | B 14 | 14 |
Instalok™ Compression Coupling
Standard black nitrile O-ring shown. Additional O-ring materials are available upon request.
Additional sizes and configurations are available upon request.
Instalok™ couplings are commonly selected where installation speed, ease of removal, and a reusable mechanical connection are important.
Before ordering: confirm tubing O.D., pipe size, O-ring material, and application requirements.
| Common Name (Tubing O.D.) |
Coupling Length | Part No. for O.D. Tubing | Part No. for I.D. Pipe | Pipe O.D. |
|---|---|---|---|---|
| 1 1/2 | 4 | CP15062B-16Z | NA | 1.90 |
| 1 3/4 | 4 | CP17562B-16Z | NA | — |
| 2 | 4 | CP20042-16Z | NA | 2 3/8 |
| 2 1/8 | 4 | CP21262B-16Z | NA | — |
| 2 1/4 | 4 | CP22542-16Z | NA | — |
| 2 1/2 | 4 | CP25062B-16Z | NA | 2 7/8 |
| 3 | 4 | CP30042-16Z | CP35062B-16Z | 3 1/2 |
| 3 1/2 | 4 | CP35062B-16Z | CP40042-16Z | 4 |
| 4 | 4 | CP40042-16Z | NA | 4 1/2 |
| 1 1/2 | 6 | CP15062B-16Z | NA | 1.90 |
| 1 3/4 | 6 | CP17562B-16Z | NA | — |
| 2 | 6 | CP20062-16Z | NA | 2 3/8 |
| 2 1/8 | 6 | CP21262B-16Z | NA | — |
| 2 1/4 | 6 | CP22562-16Z | NA | — |
| 2 1/2 | 6 | CP25062B-16Z | NA | 2 7/8 |
| 3 | 6 | CP30062-16Z | CP35062B-16Z | 3 1/2 |
| 3 1/2 | 6 | CP35062B-16Z | CP40062-16Z | 4 |
| 4 | 6 | CP40062-16Z | NA | 4 1/2 |
| 2 1/2 | 8 | CP25082B-16Z | NA | 2 7/8 |
| 3 | 8 | CP30082B-16Z | CP35082B-16Z | 3 1/2 |
| 3 1/2 | 8 | CP35082B-16Z | CP40082B-16Z | 4 |
| 4 | 8 | CP40082B-16Z | NA | 4 1/2 |
Quick / Super Grip Coupling
Stainless steel coupling shown. Gasket material and coupling length vary by size and application.
Quick / Super Grip couplings provide a fast, reusable connection for straight-end vacuum tubing and pipe where frequent access, cleaning, or disassembly may be required.
These couplings are commonly used in industrial vacuum and pneumatic conveying systems where operators need a secure mechanical connection that can be opened and reassembled quickly.
Inquire for actual part numbers and availability.
Additional sizes and gasket configurations are available upon request.
Quick / Super Grip couplings are commonly selected where fast access, repeated disassembly, and a reusable stainless steel connection are important.
Before ordering: confirm tubing O.D. or pipe size, coupling length, gasket material, and application requirements.
| Common Name Tube/Pipe Size | Part No. for O.D. Tubing | Part No. for I.D. Pipe | Pipe O.D. |
|---|---|---|---|
| 4" LONG COUPLINGS, 1 CLAMP (FOR FDA ADD -FDA TO END OF PART NUMBER) | |||
| 1 1/4 | — | SG-16601 | 1.656 |
| 1 1/2 | SG-15501 | SG-19001 | 1.90 |
| 1 3/4 | SG-17501 | — | — |
| 2 | SG-20001 | SG-23751 | 2 3/8 |
| 2 1/8 | SG-21251 | — | — |
| 2 1/2 | SG-25001 | SG-28751 | 2 7/8 |
| 3 | SG-30001 | SG-35001 | 3 1/2 |
| 3 1/2 | SG-35001 | SG-40001 | 4 |
| 4 | SG-40001 | SG-45001 | 4 1/2 |
| 4 1/2 | SG-45001 | — | — |
| 5 | SG-50001 | SG-55631 | 5.563 |
| 6 | SG-60001 | SG-66251 | 6 5/8 |
| 8 | SG-80001 | SG-86251 | 8 5/8 |
| 10 | SG-10001 | SG-107501 | 10 3/4 |
| 12 | SG-120001 | SG-127501 | 12 3/4 |
| 9-1/2" LONG COUPLINGS, 2 CLAMPS (FOR FDA ADD -FDA TO END OF PART NUMBER) | |||
| 1 1/4 | — | — | 1.656 |
| 1 1/2 | — | — | 1.900 |
| 1 3/4 | — | — | — |
| 2 | — | — | 2 3/8 |
| 2 1/8 | — | — | — |
| 2 1/2 | — | — | 2 7/8 |
| 3 | — | — | 3 1/2 |
| 3 1/2 | — | SG-40002 | 4 |
| 4 | SG-40002 | SG-45002 | 4 1/2 |
| 4 1/2 | SG-45002 | — | — |
| 5 | SG-50002 | — | 5.563 |
| 6 | SG-60002 | SG-66252 | 6 5/8 |
| 8 | SG-80002 | SG-86252 | 8 5/8 |
| 10 | SG-10002 | SG-107502 | 10 3/4 |
| 12 | SG-120002 | SG-127502 | 12 3/4 |
Shrink Sleeve Connection
Heat-shrink sleeve shown for use with compatible expanded-end light-wall tubing fittings.
Shrink sleeves provide a simple sealing method for light-wall vacuum tubing and pneumatic conveying systems. The sleeve is positioned over the joint and heated until it contracts tightly around the connection.
Shrink sleeves are typically used with expanded-end fittings where a lightweight, low-profile connection is preferred.
Inquire for actual part numbers and availability.
Shrink sleeves are commonly selected where a simple, lightweight connection is required on compatible light-wall tubing systems.
Before ordering: Confirm tubing O.D., fitting end configuration, sleeve size, and application requirements.
| Part Number Shrink Sleeve | For O.D. Tubing |
|---|---|
| SS-150 | 1 1/2 |
| SS-212 | 2, 2 1/8 |
| SS-300 | 2 1/2, 3 |
| SS-350 | 3 1/2 |
| SS-400 | 4 |
| SS-500 | 5 |
| SS-600 | 6 |
| SS-800 | 8 |
| SS-1000 | 10 |
| SS-1200 | 12 |
| SS-1400 | 14 |
Slip Coupling
Solid sleeve coupling shown for joining straight tubing or pipe ends.
Slip couplings are solid sleeves used to join two straight tubing or pipe ends in industrial vacuum and pneumatic conveying systems.
Depending on the application, slip couplings can be welded, brazed, or used with shrink sleeves to create a secure connection between straight sections.
Inquire for actual part numbers and availability.
Additional sizes and configurations are available upon request.
Slip couplings are commonly selected where two straight tubing or pipe ends must be joined without a bolted compression coupling.
When shrink sleeves are used as the sealing method, two shrink sleeves are required for each slip coupling joint.
Before ordering: Confirm tubing O.D. or pipe size, material, connection method, and application requirements.
| Size | E – I.D. | C | Gauge |
|---|---|---|---|
| SC-153 | 1 1/2 | 3 | 16 |
| SC-203 | 2 | 3 | 16 |
| SC-213 | 2.12 | 3 | 16 |
| SC-253 | 2 1/2 | 3 1/2 | 16 |
| SC-303 | 3 | 4 | 16 |
| SC-353 | 3 1/2 | 4 1/2 | 16 |
| SC-403 | 4 | 5 | 16 |
| SC-503 | 5 | 6 | 14 |
| SC-603 | 6 | 7 | 14 |
| SC-803 | 8 | 8 | 14 |
| SC-1003 | 10 | 10 | 12 |
| SC-1203 | 12 | 12 | 12 |
| SC-1403 | 14 | 14 | 12 |