Cam-and-Groove Reducers | McMaster-Carr

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Andrews Cam-and-Groove

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Dixon Vapor Valves

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PT Coupling Vapor Valves

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75 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.

A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.

Aluminum couplings are lighter in weight than brass plugs and sockets. They have good abrasion and corrosion resistance thanks to their anodized finish. Brass couplings are softer than aluminum plugs and sockets, so they’re easier to thread together. They have good corrosion resistance.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

Straight Plug Reducers

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Plug connectors and reducers are also known as SA spool adapters.

Coupling Size		Plug OD
(A)	(B)	(A)	(B)	Max. Pressure		Each
Anodized Aluminum
1 1/2	1	2 1/8"	1 7/16"	250 psi @ 72° F	00000000	000000
2 1/2	2	3"	2 1/2"	200 psi @ 72° F	00000000	00000
3	2	3 5/8"	2 1/2"	200 psi @ 72° F	00000000	00000
4	3	4 3/4"	3 5/8"	150 psi @ 72° F	00000000	000000

Straight Socket Reducers

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Socket connectors and reducers are also known as C × C couplers.

Coupling Size		Socket ID		Levers
(A)	(B)	(A)	(B)	No. of	Material	Pull Ring Material	Max. Pressure		Each
Anodized Aluminum
3	2	3 5/8"	2 1/2"	4	316 Stainless Steel	Zinc-Plated Steel	200 psi @ 72° F	00000000	0000000
4	3	4 3/4"	3 5/8"	4	316 Stainless Steel	Zinc-Plated Steel	150 psi @ 72° F	00000000	000000
Brass
3	2	3 5/8"	2 1/2"	4	Brass	Zinc-Plated Steel	200 psi @ 72° F	000000000	000000

316 Stainless Steel Replacement Levers for 3 and 4 Coupling Size Sockets	000000000	Each	000000
Protective Plug for 3 Coupling Size Sockets	00000000	Each	00000
316 Stainless Steel Replacement Levers for 2 Coupling Size Sockets	000000000	Each	00000
Protective Plug for 2 Coupling Size Sockets	00000000	Each	00000
Protective Plug for 4 Coupling Size Sockets	00000000	Each	00000
Brass Replacement Levers for 2 Coupling Size Sockets	000000000	Each	0000
Brass Replacement Levers for 3 Coupling Size Sockets	000000000	Each	0000

Straight Plug-to-Socket Reducing Adapters

Maximum Pressure: See table
Temperature Range: -65° to 250° F
Specifications Met: Fed. Spec. A-A-59326
Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings

Plug-to-socket reducing adapters are also known as A × C couplers.

Reducing Adapters
Coupling Size				Levers						Replacement Gaskets
(A)	(B)	Plug OD	Socket ID	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
Anodized Aluminum
1 1/2	1	2 1/8"	1 7/16"	2	316 Stainless Steel	Zinc-Plated Steel	250 psi @ 72° F	00000000	000000	10	0000000	00000
2	1 1/2	2 1/2"	2 1/8"	2	316 Stainless Steel	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000
2	3	2 1/2"	3 5/8"	2	316 Stainless Steel	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	00000
3	2	3 5/8"	2 1/2"	2	316 Stainless Steel	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	0000
3	4	3 5/8"	4 3/4"	2	316 Stainless Steel	Zinc-Plated Steel	150 psi @ 72° F	00000000	000000	10	0000000	00000
4	3	4 3/4"	3 5/8"	2	316 Stainless Steel	Zinc-Plated Steel	150 psi @ 72° F	00000000	000000	10	0000000	00000
Brass
2	3	2 1/2"	3 5/8"	2	Brass	Zinc-Plated Steel	200 psi @ 72° F	000000000	000000	10	0000000	00000
3	4	3 5/8"	4 3/4"	2	Brass	Zinc-Plated Steel	150 psi @ 72° F	000000000	000000	10	0000000	00000

Protective Plug for 4 Coupling Size Sockets	00000000	Each	000000
316 Stainless Steel Replacement Lever for 3 and 4 Coupling Size Sockets	000000000	Each	00000
Protective Plug for 3 Coupling Size Sockets	00000000	Each	00000
316 Stainless Steel Replacement Lever for 2 Coupling Size Sockets	000000000	Each	00000
Protective Plug for 2 Coupling Size Sockets	00000000	Each	00000
316 Stainless Steel Replacement Lever for 1 Coupling Size Sockets	000000000	Each	0000
316 Stainless Steel Replacement Lever for 1 1/2 Coupling Size Sockets	000000000	Each	00000
Brass Replacement Lever for 3 and 4 Coupling Size Sockets	000000000	Each	0000
Brass Replacement Lever for 2 Coupling Size Sockets	000000000	Each	0000

Plastic Cam-and-Groove Hose Couplings for Water

Made of polypropylene, these couplings are lighter in weight than metal cam-and-groove couplings and have good abrasion and corrosion resistance. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.

Plug connectors and reducers are also known as SA spool adapters.

Sockets with locking levers prevent accidental disconnection. The locking pins engage automatically when the coupling is connected. Press the locking pins simultaneously to disengage.

Plug-to-socket reducing adapters are also known as A × C couplers.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

Straight Plug Reducers

Maximum Pressure: 75 psi @ 72° F
Temperature Range: 0° to 150° F

Coupling Size		Plug OD
(A)	(B)	(A)	(B)		Each
Polypropylene Plastic
3	2	3"	2"	00000000	000000

Straight Socket-to-Plug Reducing Adapters with Locking Levers

Maximum Pressure: 75 psi @ 72° F
Temperature Range: -20° to 150° F
Specifications Met: Fed. Spec. A-A-59326

Reducing Adapters
Coupling Size				Levers					Replacement Gaskets for Coupling Size 2			Replacement Gaskets for Coupling Size 3
(A)	(B)	Socket ID	Plug OD	No. of	Material	Pull Ring Material		Each	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Polypropylene Plastic
3	2	3"	2"	2	304 Stainless Steel	Zinc-Plated Steel	00000000	000000	10	0000000	000000	10	0000000	000000

Straight Socket-to-Plug Reducing Adapters

Maximum Pressure: See table
Temperature Range: See table
Specifications Met: See table

Reducing Adapters
Coupling Size				Levers								Replacement Gaskets for Coupling Size 2			Replacement Gaskets for Coupling Size 3
(A)	(B)	Socket ID	Plug OD	No. of	Material	Pull Ring Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Polypropylene Plastic
3	2	3"	2"	2	304 Stainless Steel	Zinc-Plated Steel	75 psi @ 72° F	-20° to 150°	Fed. Spec. A-A-59326	00000000	000000	10	0000000	000000	10	0000000	000000
3	2	3"	2"	3	304 Stainless Steel	304 Stainless Steel	200 psi @ 72° F	0° to 150°	__	00000000	00000	10	0000000	00000	10	0000000	00000

Metal Cam-and-Groove Hose Couplings for Chemicals and Petroleum

Made of metal, these couplings have better durability than plastic cam-and-groove couplings. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug. Couplings are compatible with Andrews, Dixon, Ever-Tite, and PT cam-and-groove couplings.

Aluminum fittings are lighter in weight than 316 stainless steel fittings. They have good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

Straight Plug Reducers

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: See table
Temperature Range: -65° to 250° F
Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove
Specifications Met: Fed. Spec. A-A-59326

Plug reducers are also known as SA spool adapters.

Coupling Size		Plug OD
(A)	(B)	(A)	(B)	Max. Pressure		Each
Aluminum
1 1/2	1	2 1/8"	1 7/16"	250 psi @ 72° F	000000000	000000
2 1/2	2	3"	2 1/2"	200 psi @ 72° F	000000000	00000
3	2	3 5/8"	2 1/2"	200 psi @ 72° F	00000000	00000
4	3	4 3/4"	3 5/8"	150 psi @ 72° F	00000000	00000
316 Stainless Steel
3	2	3 5/8"	2 1/2"	200 psi @ 72° F	0000000	000000
4	3	4 3/4"	3 5/8"	150 psi @ 72° F	0000000	000000

Straight Socket Reducers

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: See table
Temperature Range: -65° to 250° F
Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove
Specifications Met: Fed. Spec. A-A-59326

Socket reducers are also known as C × C couplers.

Sockets
Coupling Size		Socket ID							Protective Plugs
(A)	(B)	(A)	(B)	No. of Levers	Pull Ring Material	Max. Pressure		Each		Each
Aluminum with Brass Levers
3	2	3 5/8"	2 1/2"	4	Zinc-Plated Steel	200 psi @ 72° F	000000000	0000000	0000000	000000
4	3	4 3/4"	3 5/8"	4	Zinc-Plated Steel	150 psi @ 72° F	000000000	000000	0000000	00000
Aluminum with 316 Stainless Steel Levers
3	2	3 5/8"	2 1/2"	4	Zinc-Plated Steel	200 psi @ 72° F	00000000	000000	0000000	00000
4	3	4 3/4"	3 5/8"	4	Zinc-Plated Steel	150 psi @ 72° F	00000000	000000	0000000	00000
316 Stainless Steel with 316 Stainless Steel Levers
3	2	3 5/8"	2 1/2"	4	304 Stainless Steel	200 psi @ 72° F	00000000	000000	0000000	00000
4	3	4 3/4"	3 5/8"	4	304 Stainless Steel	150 psi @ 72° F	00000000	000000	0000000	00000

Replacement Gasket for 3 Coupling Size Sockets (10/Pkg.)	0000000	Pkg.	000000
Brass Replacement Lever for 3 and 4 Coupling Size Sockets	000000000	Each	0000
Replacement Gasket for 4 Coupling Size Sockets (10/Pkg.)	0000000	Pkg.	00000
Brass Replacement Lever for 2 Coupling Size Sockets	000000000	Each	0000
Replacement Gasket for 2 Coupling Size Sockets (10/Pkg.)	0000000	Pkg.	0000
316 Stainless Steel Replacement Lever for 3 and 4 Coupling Size Sockets	000000000	Each	00000
316 Stainless Steel Replacement Lever for 2 Coupling Size Sockets	000000000	Each	00000

Straight Plug-to-Socket Reducing Adapters

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: See table
Temperature Range: -65° to 250° F
Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove
Specifications Met: Fed. Spec. A-A-59326

Plug-to-socket reducing adapters are also known as A × C couplers.

Reducing Adapters
Coupling Size									Replacement Gaskets			Protective Plugs
(A)	(B)	Plug OD (A)	Socket ID (B)	No. of Levers	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.		Each
Aluminum with Brass Levers
1 1/2	1	2 1/8"	1 7/16"	2	Zinc-Plated Steel	250 psi @ 72° F	000000000	000000	10	0000000	00000	000000	00
2	1 1/2	2 1/2"	2 1/8"	2	Zinc-Plated Steel	250 psi @ 72° F	000000000	00000	10	0000000	0000	000000	00
2	3	2 1/2"	3 5/8"	2	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	00000	0000000	000000
3	2	3 5/8"	2 1/2"	2	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	0000	0000000	00000
3	4	3 5/8"	4 3/4"	2	Zinc-Plated Steel	150 psi @ 72° F	00000000	00000	10	0000000	00000	0000000	00000
4	3	4 3/4"	3 5/8"	2	Zinc-Plated Steel	150 psi @ 72° F	00000000	00000	10	0000000	00000	0000000	00000
Aluminum with 316 Stainless Steel Levers
1 1/2	1	2 1/8"	1 7/16"	2	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000	00
2	1 1/2	2 1/2"	2 1/8"	2	Zinc-Plated Steel	250 psi @ 72° F	00000000	00000	10	0000000	0000	000000	00
2	3	2 1/2"	3 5/8"	2	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	00000	0000000	00000
3	2	3 5/8"	2 1/2"	2	Zinc-Plated Steel	200 psi @ 72° F	00000000	00000	10	0000000	0000	0000000	00000
3	4	3 5/8"	4 3/4"	2	Zinc-Plated Steel	150 psi @ 72° F	00000000	00000	10	0000000	00000	0000000	00000
4	3	4 3/4"	3 5/8"	2	Zinc-Plated Steel	150 psi @ 72° F	00000000	000000	10	0000000	00000	0000000	00000
316 Stainless Steel with 316 Stainless Steel Levers
1 1/2	1	2 1/8"	1 7/16"	2	304 Stainless Steel	250 psi @ 72° F	000000000	000000	10	0000000	0000	000000	00
2	1 1/2	2 1/2"	2 1/8"	2	304 Stainless Steel	250 psi @ 72° F	000000000	000000	10	0000000	0000	000000	00
2	3	2 1/2"	3 5/8"	2	304 Stainless Steel	200 psi @ 72° F	0000000	000000	10	0000000	00000	0000000	00000
3	2	3 5/8"	2 1/2"	2	304 Stainless Steel	200 psi @ 72° F	0000000	000000	10	0000000	0000	0000000	00000
3	4	3 5/8"	4 3/4"	2	304 Stainless Steel	150 psi @ 72° F	0000000	000000	10	0000000	00000	0000000	00000
4	3	4 3/4"	3 5/8"	2	304 Stainless Steel	150 psi @ 72° F	0000000	000000	10	0000000	00000	0000000	00000

Brass Replacement Lever for 3 and 4 Coupling Size Sockets	Each	00000
Brass Replacement Lever for 2 Coupling Size Sockets	Each	0000
Brass Replacement Lever for 1 Coupling Size Sockets	Each	0000
Brass Replacement Lever for 1 1/2 Coupling Size Sockets	Each	0000
316 Stainless Steel Replacement Lever for 3 and 4 Coupling Size Sockets	Each	00000
316 Stainless Steel Replacement Lever for 2 Coupling Size Sockets	Each	00000
316 Stainless Steel Replacement Lever for 1 1/2 Coupling Size Sockets	Each	00000
316 Stainless Steel Replacement Lever for 1 Coupling Size Sockets	Each	0000

Straight Socket-to-Plug Reducing Adapters with NPT Male Threaded Port

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: 200 psi @ 72° F
Temperature Range: -30° to 200° F
Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove

Socket-to-plug reducing adapters are also known as A × C couplers.

Fittings with a threaded port can be used to measure and relieve pressure, as well as sample what’s in your line.

Reducing Adapters
Coupling Size									Replacement Gaskets			Protective Plugs
(A)	(B)	Socket ID (A)	Plug OD (B)	Relief Port Pipe Size	No. of Levers	Pull Ring Material		Each	Pkg. Qty.		Pkg.		Each
316 Stainless Steel with 316 Stainless Steel Levers
3	2	3 5/8"	2 1/2"	1/2	2	316 Stainless Steel	0000000	0000000	10	0000000	000000	0000000	000000

Straight API Valve-to-Plug Reducing Adapters

For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: 75 psi @ 72° F
Temperature Range: -40° to 200° F

API valve-to-plug adapters are used to offload tankers with an API valve.

Reducing Adapters
Coupling Size							Replacement Gaskets
(A)	(B)	Plug OD (B)	No. of Levers	Pull Ring Material		Each		Each
Aluminum with Brass Levers
4	3	3 5/8"	2	Zinc-Plated Steel	0000000	0000000	0000000	00000

Straight API Valve-to-Plug Reducing Adapters with Sight Glass

For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: 75 psi @ 72° F
Temperature Range: -40° to 200° F

API valve-to-plug adapters are used to offload tankers with an API valve.

Adapters with a sight glass let you inspect the fluid in your line.

Reducing Adapters
Coupling Size							Replacement Gaskets
(A)	(B)	Plug OD (B)	No. of Levers	Pull Ring Material		Each		Each
Aluminum with Brass Levers
4	3	3 5/8"	2	Zinc-Plated Steel	0000000	0000000	0000000	00000

Cam-and-Groove Hose Couplings for Vapor Recovery

Connect your hose to a cam-and-groove vapor recovery valve. The probe inside these couplings opens the valve when connected to start recovery. They’re often used when offloading fuel.

Socket-to-plug reducing adapters are also known as A×C couplers.

Straight Socket-to-Plug Reducing Adapters with Probe

Maximum Pressure: 100 psi @ 72° F
Temperature Range: -40° to 250° F
Compatible With: Dixon Vapor Valves, PT Coupling Vapor Valves, OPW Vapor Valves

Coupling Size				Levers
(A)	(B)	Socket ID (A)	Plug OD (B)	No. of	Material	Pull Ring Material		Each
Aluminum
4	3	4 3/4"	3 5/8"	2	Bronze	Steel	0000000	0000000

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How to Identify and Measure Fittings

Metal Cam-and-Groove Hose Couplings for Water

Plastic Cam-and-Groove Hose Couplings for Water

Metal Cam-and-Groove Hose Couplings for Chemicals and Petroleum

Cam-and-Groove Hose Couplings for Vapor Recovery