Reducing Adapter Caps | McMaster-Carr

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Reducing Adapter

	Type Type	Hide

	Connection Style Connection Style

Threaded

Socket Connect

Cam-and-Groove

	Pipe Size Pipe Size

1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
6

	Thread Type Thread Type

BSPT

NPT

	Material Material

Aluminum

Plastic

Stainless Steel

	Shape Shape


Straight	Tee

	Schedule Schedule

	80

	Gender Gender

Female

Male

	For Use With For Use With

	Body Shape Body Shape

	Hex

	For Pipe Material For Pipe Material

Plastic

	Connection Type Connection Type


Hose	Pipe

	For Pipe Schedule For Pipe Schedule

	80

	Color Color

	Light Gray

	Maximum Temperature Maximum Temperature

100° to 249.9° F

250° to 499.9° F

	Minimum Temperature Minimum Temperature

-249° to -50° F

Not Rated

	Specifications Met Specifications Met

ASTM

Fed. Spec.

NSF/ANSI

	Maximum Pressure Maximum Pressure

	System of Measurement System of Measurement

Inch

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Coupling Size Coupling Size

3/4

1 1/2

	Cam-and-Groove Component Cam-and-Groove Component


Socket	Plug

	Environment Environment

Food and Beverage

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91 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.

Made of CPVC, these fittings can handle high temperatures up to 200° F. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing and waste water treatment. They also have good corrosion resistance. These fittings are comparable to Corzan. Some meet ASTM D1784 specifications and testing requirements for material quality.

Fittings for drinking water meet NSF/ANSI Standard 61.

Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.

Warning: Never use plastic pipe fittings and pipe with compressed air or gas.

Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local regulatory limits on VOCs (Volatile Organic Compounds).

For technical drawings and 3-D models, click on a part number.

Straight Bushing Reducing Adapters, Male Socket Connect × Female Threaded Pipe

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Nitric Acid (10%), Phosphoric Acid (85%), Salt Water, Sulfuric Acid (75%), Water
Maximum Temperature: 200° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Flanges: Use Class 150 CPVC Plastic

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).

To prevent leaks in threaded connections, apply a non-hardening, plastic-compatible sealant to the male threads. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.

(A)
Pipe Size	OD	ID	Wall Thick.	Pipe Size (B)	Material	Schedule	Color	Max. Pressure		Each
NPT Threads
3/8	43/64"	0.423"	0.126"	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1/2	27/32"	0.546"	0.147"	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	0000
1/2	27/32"	0.546"	0.147"	3/8	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	0000
3/4	1 3/64"	0.742"	0.154"	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3/4	1 3/64"	0.742"	0.154"	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	0000
1	1 5/16"	0.957"	0.179"	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	0000
1	1 5/16"	0.957"	0.179"	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	0000
1 1/4	1 21/32"	1.278"	0.191"	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 29/32"	1.5"	0.2"	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 29/32"	1.5"	0.2"	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 29/32"	1.5"	0.2"	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 29/32"	1.5"	0.2"	1 1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	2 3/8"	1.939"	0.218"	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	2 3/8"	1.939"	0.218"	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	2 3/8"	1.939"	0.218"	1 1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	2 3/8"	1.939"	0.218"	1 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2 1/2	2 7/8"	2.323"	0.276"	1 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
4	4 1/2"	3.826"	0.337"	2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	000000

Pipe Cement for Max. Pipe Size 6	00000000	Each	00000
Non-Hardening Thread Sealant	000000	Each	00000

Straight Bushing Reducing Adapters, Male Threaded Pipe × Female Threaded Pipe

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Nitric Acid (10%), Phosphoric Acid (85%), Salt Water, Sulfuric Acid (75%), Water
Maximum Temperature: 200° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Flanges: Use Class 150 CPVC Plastic

NPT Threads
Pipe Size (A)	Pipe Size (B)	Material	Schedule	Color	Max. Pressure		Each
3/8	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	000000
1/2	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1/2	3/8	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3/4	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3/4	3/8	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3/4	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	0000
1	1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1	3/8	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	0000
1	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	0000
1 1/4	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/4	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/4	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/2	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/2	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/2	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
1 1/2	1 1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
2	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
2	1 1/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
2	1 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	0000000	00000
2 1/2	2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3	1 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3	2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
3	2 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
4	2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
4	3	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
6	4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	000000

Non-Hardening Thread Sealant

000000

Each

000000

Inline Tee Reducing Adapters, Female Socket Connect × Female Threaded Pipe

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
Maximum Temperature: 200° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Flanges: Use Class 150 CPVC Plastic

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).

Inline tees are also known as branch tees.

(A)
Pipe Size	Socket Depth	Pipe Size (B)	Material	Schedule	Color	Max. Pressure		Each
NPT Threads
3/4	1"	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	000000
1	1 1/8"	1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1	1 1/8"	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 3/8"	3/4	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
1 1/2	1 13/32"	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	1 1/2"	1	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
2	1 1/2"	1 1/2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	00000
4	2 1/4"	2	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	000000

Pipe Cement for Max. Pipe Size 6	00000000	Each	00000
Non-Hardening Thread Sealant	000000	Each	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.

Plugs with male threaded end are also known as F adapters.

Plugs with female threaded end are also known as A adapters.

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

Aluminum plugs and sockets are lighter in weight than 316 stainless steel plugs and sockets. They have good corrosion resistance. 316 stainless steel plugs and sockets 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.

For technical drawings and 3-D models, click on a part number.

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

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

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

Straight Plug Reducing Adapters, BSPT Male Threaded Pipe

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: 250 psi @ 72° F
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

Aluminum
Coupling Size	Plug OD	Pipe Size		Each
3/4	15/16"	1/2	000000000	00000
316 Stainless Steel
3/4	15/16"	1/2	000000000	00000

Straight Plug Reducing Adapters, BSPT Female Threaded Pipe

For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
Maximum Pressure: 250 psi @ 72° F
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

316 Stainless Steel
Coupling Size	Plug OD	Pipe Size		Each
3/4	15/16"	1/2	000000000	000000

How to Identify and Measure Fittings

CPVC Pipe Fittings for Hot Water

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