Compression Couplings

Compression Couplings | Morris Type Compression Couplings | Instalok™ Compression Couplings

3 Bolt Style Morris Compression Coupling
Inquire for actual part numbers.

Many other sizes compression couplings are available!

Standard black neoprene
gasket and stainless
grounding strip.

Compression Couplings Morris Type

Bolted couplings are available in both heavy wall pipe size and tube size up to 24″Ø.

Installation requires only a 3/4″ wrench or deep socket.  Offers easy teardown and reusability.

Models available in 3, 4, 5, and 6+ bolt configurations to safely accommodate heavy wall installations.

Galvanized with plated hardware standard. All stainless available.  Various gaskets available. white nitrile, red rubber, silicone, EPDM, Viton and Food Grade.
grade. This is the most preferred style of compression couplings. A little more expensive than Instalok™ compression couplings, yet widely preferred.
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
13/4 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 B 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

2 Bolt Style instalok compression coupling with O-Ring Seals

Std o-ring black
nitrile gasket Instalok™ coupling shown.
(other O-rings available)

Instalok™ Compression Couplings

Bolted couplings are available in both heavy wall pipe size and tube size up to 6″Ø. Instalok™ couplings are estimated to Install 30% faster and cost 20% less than bolt style compression couplings!

Grade 5 stress relieved bolts insure trouble free installation.

Instalok™ compression couplings are not available in stainless steel.

Instalok™ compression couplings are available with other gasket materials.

Galvanized with plated hardware standard. grade
Common Name (Tubing O.D.) Length coupling Part No. for O.D. Tubing Part No. for I.D. Pipe Pipe O.D.
1 1/2 4 CP15062B-16Z NA 1.9
13/4 4 CP17562B-16Z NA .
2 4 CP20042-16Z NA 2 3/8
2 1/8 4 CP21262B-16Z NANA. .
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 NANA. .
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 CP30082-16Z CP35082B-16Z 3 1/2
3 1/2 8 CP35082B-16Z CP40082-16Z 4
4 8 CP40082-16Z NA 4 1/2


1 or 2 Lever HP Products Super Grip Quick Coupling

Std black neoprene
gasket and stainless
grounding strip.

Quick Couplings

Quick couplings are available in 4″ and 9-1/2″ lengths for pipe from 1.0″Ø to 14″Ø and tubing 1-1/2″Ø to 14″Ø.

Tighten in seconds.

100% stainless steel.  Various gasket types available. white nitrile, red rubber, silicone, EPDM, Viton, and food grade. Use Super Grip Quick Compression Couplings only on straight end fittings. grade
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 Wrap Sleeve for use on Thin Wall Vacuum and Pneumatic Conveying Piping Systems
Remember, slip couplings require TWO shrink sleeves to seal…

Shrink Sleeves for light Wall Piping Systems

A heat shrinkable polyolefin band that shrinks when heated with a heat gun and wraps around the connection.  The resulting joint is mechanically strong and is vacuum tight!  A great product. Recommended for use in systems under 15 psi.

NOTE:  Based on our experience. Shrink sleeves are the least expensive method of joining light wall tubing. Use shrink sleeves with expanded end fittings. Use compression couplings when straight ends connections are being used.
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

Vacuum System Pneumatic Conveying Slip Coupling used to join 2 straight sections of tubing
Remember, slip couplings require two shrink sleeves to seal. Compression couplings require none.

Slip couplings for light Wall Systems

Available in: Carbon Steel, Galvanized Steel, Aluminum 6061, 304 SS

Used to join any two straight ends of tube or pipe. Available with expanded ends only up to 6″.

NOTE:  Compression couplings replace slip couplings.  Slip couplings are required for joining 2 straight tube ends when shrink wrap sleeves are used in lieu of compression couplings.
All dimensions are in inches
Size E – I.D. C Gauge
SC-153 1 1/2 3 16
SC-200 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 10 12
SC-1203 12 12 12
SC-1403 14 14 12
Picture depicts a slip coupling over a straight section of tubing or vacuum fittings when assembledCan be used for joining any two straight ends of tubing or fittings.  The slip coupling is a solid sleeve that fits the O.D. of the joint which can then be brazed, welded, or covered by a shrink sleeve. Slip couplings are used when shrink wrap sleeves are used instead of compression couplings.

INSTALOK™ Couplings: These couplings are designed specifically for conveying plastic pellets and other non-sanitary vacuum applications. Available in sizes ranging from 1.5 inches to 6 inches. Construction: Galvanized steel. O-rings available in: Black Nitrile White Nitrile Viton™ Key features: Eliminates the risk of product contamination due to deteriorating gasket material. Installs in less the time compared to competing couplings. Costs 20% less than traditional compression couplings. Ideal for vacuum systems and conveying plastic pellets. Compression Couplings (Morris Type): Designed for vacuum and pressure applications in pneumatic conveying or industrial vacuum systems. Available in sizes from 1.5 inches to 14 inches. Construction: Heavy-gauge, zinc-plated steel. Standard gaskets: Black Neoprene or White Nitrile Rubber. Stainless steel grounding strips (to eliminate static electricity build-up) are standard. Gasket protectors available to eliminate gasket wear. Stainless steel couplings available upon request. Suitable for both tube size and heavy wall pipe installations. Super Grip Couplings: Quick couplers for dry, bulk transport tank tubing and applications involving periodic line cleaning or quick access. Available in sizes from 1.5 inches to 12.75 inches. Type 304 stainless steel bright-annealed construction for durability. Provides better support than rubber hose and band clamps. FDA-approved gum rubber gaskets for food applications. Remember that Instalok™ Compression Couplings install faster and cost less than traditional bolt-style compression couplings, making them an efficient choice for various applications.

Purchase Vacuum Fittings at our online store.