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Copper Fittings

PlumbingSupply.com® offers the best selection of copper fittings on the Internet.
No minimum order quantity -- only order the amount you need!!!
BULK savings - order 10, 100, 250 or more of the same item for additional savings!

Copper coupling Copper elbow Copper fitting reducer Copper bushing Copper cap Copper tee

Unless specifically noted otherwise, all copper sweat fittings listed on this page are nominal-sized (C or C x C).
To ensure you are ordering the correct size, please view our copper nominal and OD size conversion chart prior to ordering.

Please note: Not all fitting styles available in all sizes.

Prop 65 warning
California Proposition 65 Warning
WARNING: Some of the products listed on this page may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, click here.
(California law requires this warning to be given to customers in the State of California.)

1/8" Copper Fittings

Description Price & Quantity
1/8" Coupling with Stop $0.63
1/8" C x 1/4" FIPS Female Reducing Adapter $5.83
1/8" C x 3/8" FIPS Female Reducing Adapter $4.62
1/8" C x MIPS Male Adapter $12.69
1/8" C x 3/8" MIPS Male Reducing Adapter $8.76
Description Price & Quantity
1/8" 90° Elbow $2.13
1/8" FTG x C 90° Street Elbow $2.32
1/8" 45° Elbow $5.30
1/8" Tee $4.21
1/8" Cap $0.79

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

- OR -

1/4" Copper Fittings

Description Price & Quantity
1/4" Coupling with Stop $0.52
1/4" Coupling LESS Stop $2.29
1/4" x 1/8" Bell Reducer Coupling $3.50
1/4" C x FIPS Female Adapter $4.79
1/4" C x 3/8" FIPS Female Reducing Adapter $6.59
1/4" FTG x FIPS Fitting Female $5.78
1/4" C x MIPS Male Adapter $7.40
1/4" C x 3/8" MIPS Male Reducing Adapter $8.80
1/4" FTG x 1/8" C Bushing $1.51
1/4" 90° Elbow $2.22
Description Price & Quantity
1/4" FTG x C 90° Street Elbow $3.16
1/4" Long Turn 90° Elbow $3.02
1/4" 45° Elbow $3.97
1/4" FTG x C 45° Street Elbow $5.87
1/4" Tee $4.48
1/4" x 1/8" x 1/8" Reducing Tee $11.95
1/4" x 1/8" x 1/4" Reducing Tee $9.42
1/4" x 1/4" x 1/8" Reducing Tee $7.21
1/4" Cap $0.66

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

- OR -

3/8" Copper Fittings

Description Price & Quantity
3/8" Coupling with Stop $0.69
3/8" Coupling LESS Stop $2.35
3/8" x 1/4" Bell Reducer Coupling $1.15
3/8" Regular Union - $13.70
3/8" C x FIPS Female Adapter $4.95
3/8" C x MIPS Male Adapter $3.72
3/8" FTG x MIPS Fitting Male $6.45
3/8" FTG x 1/8" C Bushing $1.94
Description Price & Quantity
3/8" FTG x 1/4" C Bushing $1.58
3/8" 90° Elbow $2.16
3/8" FTG x C 90° Street Elbow $2.75
3/8" 45° Elbow $3.38
3/8" FTG x C 45° Street Elbow $4.69
3/8" Tee $3.62
3/8" x 1/4" x 1/8" Reducing Tee $13.28
3/8" Cap $1.04

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

- OR -

1/2" Copper Fittings

Description Price & Quantity
1/2" Coupling with Stop $0.42
1/2" Coupling LESS Stop $0.59
1/2" (6" long) Coupling LESS Stop $3.75
1/2" x 1/4" Bell Reducer Coupling $1.39
1/2" x 3/8" Bell Reducer Coupling $1.13
1/2" Cross Over Coupling $13.93
1/2" Regular Union - $7.87
1/2" C x FIPS Union Adapter - $18.21
1/2" C x MIPS Union Adapter - $18.22
1/2" C x FIPS Female Adapter $1.94
1/2" C x FIPS Brass Female Adapter - $3.06
1/2" C x 1/4" FIPS Female Reducing Adapter $3.74
1/2" C x 3/8" FIPS Female Reducing Adapter $3.70
1/2" C x 3/4" FIPS Female Reducing Adapter $4.23
1/2" C x 3/4" FIPS Brass Female Reducing Adapter - $7.96
1/2" FTG x FIPS Fitting Female $4.72
1/2" C x MIPS Male Adapter $1.47
1/2" C x 3/4" MIPS Male Reducing Adapter $3.58
1/2" C x 1" MIPS Male Reducing Adapter $9.64
1/2" C x 3/4" MIPS Brass Male Reducing Adapter - $12.50
1/2" C x MIPS Brass Socket Adapter - $1.99
1/2" FTG x MIPS Fitting Male $6.50
1/2" FTG x 3/4" MIPS Fitting Male $11.95
1/2" FTG x 1/4" C Bushing $1.41
1/2" FTG x 3/8" C Bushing $2.35
1/2" FTG x 1/8" FIPS Flush Bushing - $4.18
1/2" FTG x 1/4" FIPS Flush Bushing - $4.41
Description Price & Quantity
1/2" FTG x 3/8" C Flush Bushing $4.49
1/2" 90° Elbow $0.55
1/2" C x 1/2" FIPS 90° Elbow $4.07
1/2" C x 1/2" FIPS 90° Elbow - $2.67
1/2" FTG x C 90° Street Elbow $0.84
1/2" FTG x MIPS 90° Street Elbow $4.90
1/2" 90° Hyset Elbow - $5.84
1/2" 90° Drop Ear Elbow - $3.97
1/2" C x 1/2" FIPS 90° Drop Ear Elbow - $3.99
1/2" 45° Elbow $0.99
1/2" FTG x C 45° Street Elbow $1.19
1/2" Tee $0.98
1/2" x 1/2" x 3/8" Reducing Tee $6.26
1/2" x 1/2" x 3/4" Reducing Tee $5.57
1/2" x 1/2" x 1" Reducing Tee $12.17
1/2" C x 1/2" C x 1/2" FIPS Drop Ear Tee - $17.29
1/2" C x 1/2" C x 1/2" FIPS Tee - $7.71
1/2" C x 1/2" C x 3/4" FIPS Bullhead Tee - $14.37
1/2" Cap $0.49
1/2" Thin Test Cap $1.49
1/2" LEAD FREE Brass Cross $14.87
1/2" Repair Coupling - 5/8" comp. x 6" long $13.73
1/2" HiEar Hanger $2.70
1/2" Push Nut Star $1.92
1/2" x 6" long Stubout $2.39
1/2" x 12" long Stubout $4.28
1/2" x 4" x 6" Stubout Ell $5.19
1/2" Class 150 Companion Flange $22.95

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

3/4" Copper Fittings

Description Price & Quantity
3/4" Coupling with Stop $0.86
3/4" Coupling LESS Stop $1.19
3/4" (6" long) Coupling LESS Stop $5.25
3/4" x 1/4" Bell Reducer Coupling $2.36
3/4" x 1/2" Bell Reducer Coupling $1.58
3/4" Regular Union - $9.76
3/4" C x FIPS Union Adapter - $24.96
3/4" C x FIPS Female Adapter $2.82
3/4" C x 1/2" FIPS Female Reducing Adapter $4.22
3/4" FTG x FIPS Fitting Female $6.11
3/4" C x MIPS Male Adapter $2.89
3/4" C x MIPS Brass Male Adapter - $7.95
3/4" C x 1/2" MIPS Male Reducing Adapter $3.59
3/4" C x 1" MIPS Male Reducing Adapter $7.94
3/4" C x 1/2" MIPS Brass Male Reducing Adapter - $5.09
3/4" C x MIPS Brass Socket Adapter - $2.19
3/4" FTG x MIPS Fitting Male $8.41
3/4" FTG x 1/2" C Bushing $1.79
3/4" 90° Elbow $1.19
3/4" C x 3/4" FIPS 90° Elbow - $11.79
3/4" x 1/2" 90° Reducing Elbow $3.39
Description Price & Quantity
3/4" FTG x C 90° Street Elbow $1.79
3/4" Long Turn 90° Street Elbow $5.39
3/4" C x 3/4" FIPS 90° Hyset Elbow - $18.25
3/4" 90° Drop Ear Elbow - $10.86
3/4" C x 1/2" FIPS 90° Drop Ear Elbow - $14.84
3/4" C x 3/4" FIPS 90° Drop Ear Elbow - $7.94
3/4" 45° Elbow $1.79
3/4" FTG x C 45° Street Elbow $1.48
3/4" Tee $2.47
3/4" x 1/2" x 1/2" Reducing Tee $2.84
3/4" x 1/2" x 3/4" Reducing Tee $2.89
3/4" x 3/4" x 1/2" Reducing Tee $2.29
3/4" x 3/4" x 1" Reducing Tee $9.77
3/4" C x 3/4" C x 3/4" FIPS Tee - $15.98
3/4" Cap $0.79
3/4" Thin Test Cap $1.59
3/4" HiEar Hanger $3.89
3/4" Brass HiEar Hanger $8.93
3/4" x 8" long Stubout $7.88
3/4" Class 150 Companion Flange $30.71

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

1" Copper Fittings

Description Price & Quantity
1" Coupling with Stop $1.89
1" Coupling LESS Stop $2.47
1" x 1/2" Bell Reducer Coupling $4.29
1" x 3/4" Bell Reducer Coupling $5.19
1" Regular Union - $16.55
1" C x FIPS Union Adapter - $50.59
1" C x FIPS Female Adapter $6.19
1" C x 1/2" FIPS Female Reducing Adapter $13.63
1" C x 3/4" FIPS Female Reducing Adapter $11.68
1" C x 1-1/4" FIPS Female Reducing Adapter $19.80
1" FTG x FIPS Fitting Female $11.02
1" C x MIPS Male Adapter $6.36
1" C x MIPS Brass Male Adapter - $24.15
1" C x 1/2" MIPS Male Reducing Adapter $11.98
1" C x 3/4" MIPS Male Reducing Adapter $7.85
1" C x 1-1/2" MIPS Male Reducing Adapter $34.98
1" C x MIPS Brass Socket Adapter - $4.99
1" FTG x MIPS Fitting Male $10.65
1" FTG x 1/2" C Bushing $3.19
1" FTG x 3/4" C Bushing $2.69
Description Price & Quantity
1" 90° Elbow $2.93
1" x 1/2" 90° Reducing Elbow $6.82
1" x 3/4" 90° Reducing Elbow $6.19
1" FTG x C 90° Street Elbow $4.96
1" C x 1" FIPS 90° Drop Ear Elbow - $30.23
1" 45° Elbow $4.98
1" FTG x C 45° Street Elbow $5.89
1" Tee $7.29
1" x 1/2" x 1/2" Reducing Tee $8.69
1" x 1/2" x 3/4" Reducing Tee $9.27
1" x 3/4" x 1/2" Reducing Tee $8.88
1" x 3/4" x 3/4" Reducing Tee $8.56
1" x 3/4" x 1" Reducing Tee $10.04
1" x 1" x 1/2" Reducing Tee $10.71
1" x 1" x 3/4" Reducing Tee $7.66
1" C x 1" C x 3/4" FIPS Tee - $19.76
1" Cap $1.89
1" Thin Test Cap $1.69
1" Class 150 Companion Flange $40.51

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

1-1/4" Copper Fittings

Description Price & Quantity
1-1/4" Coupling with Stop $3.85
1-1/4" Coupling LESS Stop $4.76
1-1/4" x 1/2" Bell Reducer Coupling $5.20
1-1/4" x 3/4" Bell Reducer Coupling $4.94
1-1/4" x 1" Bell Reducer Coupling $5.08
1-1/4" Regular Union - $30.24
1-1/4" C x FIPS Union Adapter - $96.15
1-1/4" C x FIPS Female Adapter $10.96
1-1/4" C x 1" FIPS Female Reducing Adapter $22.73
1-1/4" FTG x FIPS Fitting Female $17.66
1-1/4" C x MIPS Male Adapter $9.73
1-1/4" C x 1-1/2" MIPS Male Reducing Adapter $22.34
1-1/4" FTG x MIPS Fitting Male $32.94
1-1/4" FTG x 1/2" C Bushing $5.45
1-1/4" FTG x 3/4" C Bushing $7.91
1-1/4" FTG x 1" C Bushing $5.55
1-1/4" FTG x 1" C Flush Bushing $5.32
Description Price & Quantity
1-1/4" 90° Elbow $5.96
1-1/4" x 1" 90° Reducing Elbow $19.46
1-1/4" FTG x C 90° Street Elbow $8.95
1-1/4" 45° Elbow $7.85
1-1/4" FTG x C 45° Street Elbow $9.56
1-1/4" Tee $12.29
1-1/4" x 3/4" x 1" Reducing Tee $18.81
1-1/4" x 1" x 1/2" Reducing Tee $17.50
1-1/4" x 1" x 3/4" Reducing Tee $17.20
1-1/4" x 1" x 1" Reducing Tee $17.32
1-1/4" x 1-1/4" x 1/2" Reducing Tee $13.22
1-1/4" x 1-1/4" x 3/4" Reducing Tee $13.49
1-1/4" x 1-1/4" x 1" Reducing Tee $13.55
1-1/4" Cap $3.04
1-1/4" Thin Test Cap $1.87
1-1/4" Class 150 Companion Flange $57.38

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

1-1/2" Copper Fittings

Description Price & Quantity
1-1/2" Coupling with Stop $5.07
1-1/2" Coupling LESS Stop $6.33
1-1/2" x 1/2" Bell Reducer Coupling $8.85
1-1/2" x 3/4" Bell Reducer Coupling $8.38
1-1/2" x 1" Bell Reducer Coupling $8.22
1-1/2" x 1-1/4" Bell Reducer Coupling $8.21
1-1/2" Regular Union - $40.26
1-1/2" C x FIPS Female Adapter $17.20
1-1/2" FTG x FIPS Fitting Female $23.28
1-1/2" C x MIPS Male Adapter $10.86
1-1/2" C x 2" MIPS Male Reducing Adapter $42.04
1-1/2" FTG x MIPS Fitting Male $40.51
1-1/2" FTG x 1/2" C Bushing $6.99
1-1/2" FTG x 3/4" C Bushing $7.10
1-1/2" FTG x 1" C Bushing $7.20
1-1/2" FTG x 1-1/4" C Bushing $7.15
1-1/2" 90° Elbow $9.29
Description Price & Quantity
1-1/2" x 1" 90° Reducing Elbow - $40.95
1-1/2" FTG x C 90° Street Elbow $11.78
1-1/2" 45° Elbow $9.36
1-1/2" FTG x C 45° Street Elbow $11.65
1-1/2" Tee $19.42
1-1/2" x 1" x 1/2" Reducing Tee $30.12
1-1/2" x 1" x 3/4" Reducing Tee $29.00
1-1/2" x 1" x 1" Reducing Tee $28.43
1-1/2" x 1-1/4" x 1-1/4" Reducing Tee $29.13
1-1/2" x 1-1/2" x 1/2" Reducing Tee $14.37
1-1/2" x 1-1/2" x 3/4" Reducing Tee $14.44
1-1/2" x 1-1/2" x 1" Reducing Tee $14.14
1-1/2" x 1-1/2" x 1-1/4" Reducing Tee $14.17
1-1/2" Cap $4.50
1-1/2" Thin Test Cap $1.99
1-1/2" Class 150 Companion Flange $66.19

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

2" Copper Fittings

Description Price & Quantity
2" Coupling with Stop $8.37
2" Coupling LESS Stop $10.76
2" x 1/2" Bell Reducer Coupling $14.38
2" x 3/4" Bell Reducer Coupling $13.60
2" x 1" Bell Reducer Coupling $13.38
2" x 1-1/4" Bell Reducer Coupling $12.78
2" x 1-1/2" Bell Reducer Coupling $12.65
2" Regular Union - $69.80
2" C x FIPS Female Adapter $23.53
2" C x 1-1/2" FIPS Female Reducing Adapter $31.49
2" FTG x FIPS Fitting Female $30.34
2" C x MIPS Male Adapter $18.79
2" FTG x MIPS Fitting Male $65.81
2" FTG x 1/2" C Bushing $14.90
2" FTG x 3/4" C Bushing $14.18
2" FTG x 1" C Bushing $13.94
Description Price & Quantity
2" FTG x 1-1/4" C Bushing $13.42
2" FTG x 1-1/2" C Bushing $13.55
2" 90° Elbow $16.85
2" x 1-1/2" 90° Reducing Elbow $33.92
2" FTG x C 90° Street Elbow $25.92
2" 45° Elbow $15.44
2" FTG x C 45° Street Elbow $18.72
2" Tee $29.83
2" x 2" x 1/2" Reducing Tee $22.70
2" x 2" x 3/4" Reducing Tee $22.72
2" x 2" x 1" Reducing Tee $23.04
2" x 2" x 1-1/4" Reducing Tee $25.64
2" x 2" x 1-1/2" Reducing Tee $22.98
2" Cap $8.37
2" Thin Test Cap $2.69
2" Class 150 Companion Flange $106.67

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

2-1/2" Copper Fittings

Description Price & Quantity
2-1/2" Coupling with Stop $25.60
2-1/2" Coupling LESS Stop $16.95
2-1/2" Regular Union - $152.02
2-1/2" C x FIPS Female Adapter $59.29
2-1/2" C x MIPS Male Adapter $71.03
2-1/2" FTG x 1-1/2" C Bushing $27.38
2-1/2" FTG x 2" C Bushing $26.42
Description Price & Quantity
2-1/2" 90° Elbow $33.16
2-1/2" 45° Elbow $33.30
2-1/2" Tee $60.30
2-1/2" x 2-1/2" x 2" Reducing Tee $69.07
2-1/2" Cap $26.24
2-1/2" Class 150 Companion Flange $155.48

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

3" Copper Fittings

Description Price & Quantity
3" Coupling with Stop $27.96
3" Coupling LESS Stop $27.31
3" x 1-1/2" Bell Reducer Coupling $41.18
3" x 2" Bell Reducer Coupling $36.10
3" x 2-1/2" Bell Reducer Coupling $37.46
3" Regular Union - $296.11
3" C x FIPS Female Adapter $85.15
3" C x MIPS Male Adapter $95.27
3" FTG x 1-1/2" C Bushing $37.05
3" FTG x 2" C Bushing $33.03
Description Price & Quantity
3" FTG x 2-1/2" C Bushing $34.25
3" 90° Elbow $44.89
3" 45° Elbow $49.52
3" Tee $91.83
3" x 2" x 3" Reducing Tee $132.61
3" x 3" x 3/4" Reducing Tee $51.12
3" x 3" x 1" Reducing Tee $78.14
3" x 3" x 2" Reducing Tee $77.86
3" Cap $36.71
3" Class 150 Companion Flange $192.13

= Brass components NOT for use with potable water, contains materials found on CA Prop 65 chemical list

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

- OR -

4" and Larger Copper Fittings

Description Price & Quantity
4" Coupling with Stop $52.41
4" x 2" Bell Reducer Coupling $84.31
4" x 2-1/2" Bell Reducer Coupling $85.07
4" x 3" Bell Reducer Coupling $75.61
4" C x MIPS Male Adapter $129.23
4" FTG x 2" C Bushing $79.46
4" FTG x 2-1/2" C Bushing $74.63
Description Price & Quantity
4" FTG x 3" C Bushing $71.93
4" 90° Elbow $113.59
4" 45° Elbow $106.73
4" Tee $221.02
4" Cap $68.11
4" Class 150 Companion Flange $290.16
6" Class 150 Companion Flange $481.67

Order 10, 100, 250 or more of the same item for additional savings!
Pricing discounts will show up in your shopping cart.

Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.79 or (1/2" x 520" roll) - $0.99
Great White Basic Pipe Joint Compound (1 oz.) - $2.78
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.08
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.

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Copper Fittings Related Items:



Nominal Size To OD Size Conversion Table
O.D. Of Pipe 1/4" 3/8" 1/2" 5/8" 7/8" 1-1/8" 1-3/8" 1-5/8" 2-1/8"
Nominal Pipe Size 1/8" 1/4" 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"

Nominal Wall Thickness for Copper Pipe (in inches)
Nominal Tubing Size
in inches
Type L Type M
1/4 .030 -
3/8 .035 .025
1/2 .040 .028
3/4 .045 .032
1 .050 .035
1-1/4 .055 .042
1-1/2 .060 .049
2 .070 .058
2-1/2 .080 .065
3 .090 .072

Common Terms (and what they mean)
  • C, SWT, or Socket: A regular hub or socket. The pipe fits (sweats/solders) inside this
  • MIPS: Male pipe threads on the outside of fitting
  • FIPS: Female pipe threads on the inside of fitting
  • FTG: The same size as the pipe. Will fit inside a socket (hub) fitting
  • Hyset: Has a nailing flange on the front of the fitting
  • Dropear: Has a nailing flange on the back of the fitting
  • Nominal: Used to describe copper pipe and fittings in plumbing. Refers to the inside diameter of the pipe which varies by thickness of the pipe. The outside is a constant size and is always 1/8" larger than the nominal size. Example: 1/2" nominal is always 5/8" O.D.


Frequently Asked Questions

Q. "I have 1/2" copper fittings, can I use 1/2" o.d. copper tubing with those fittings?"
A. Probably not. In the plumbing trade when we say 1/2" fittings we mean fittings that use 1/2" nominal pipe. To figure what size pipe to use with standard plumbing fittings, you must add 1/8" to your measurements to know the o.d. (outside diameter) of the pipe. 1/2" nominal fittings use 5/8" od pipe; 3/4" fittings uses 7/8" pipe and so on.

Q. "I have 'refrigeration grade' copper tubing. How do I determine which size copper sweat fittings to use?"
A. Refrigeration grade copper tubing is sized according to the outside diameter of the copper pipe. The plumbing industry uses the inside diameter (nominal) size of the pipe for their measurement of sweat fittings. To figure what size sweat fittings to use on refrigeration grade tubing you must subtract 1/8" from the outside diameter of the pipe measurements. If you have 1/4" outside diameter refrigeration grade tubing then you will need to order 1/8" (nominal) sweat fittings. Click here, to see our conversion table.

Q. "What does nominal mean?"
A. Manufacturers of copper pipe and sweat fittings use the inside diameter (nominal) size of the pipes for their definition of their pipe and fitting measurements. Some companies use the abbreviation CTS for copper tube size to refer to the copper nominal size. The term nominal is used because the inside diameter is not a precise measurement due to the different pipe thickness used for copper pipe. The outside diameter stays constant so the inside diameter will vary slightly. Since the outside diameter stays constant you can measure the outside diameter of a copper pipe and then you will be able to convert that measurement to the nominal pipe size. This will help you to determine the correct size of sweat fittings you will need. You can do this by taking the outside diameter measurement of the copper pipe and subtract 1/8" from that measurement which will give you the nominal inside diameter. View our conversion table.

Q. "Why are some of these fittings, valves, and nipples not for potable water?"
A. Starting January 1st of 2010, California and Vermont enacted new low lead laws. Effective January 2014, our U.S. Congress also passed the Reduction of Lead in Drinking Water Act (public law P.L. 111-380) which revised the Safe Drinking Water Act definition of lead free to mean 0.25% or less (weighted average) in pipes and fixture fittings used for potable water. Before then these top quality brass products were legal for potable water and used throughout the world and actually contain much less lead than products manufactured before the 1980's.

Q. "I'm hearing a lot about lead-free these days. What does that have to do with plumbing products and how does the new lead-free legislation affect me?"
A. Basically, the laws implemented Jan. 1st, 2014 require plumbing products that come in contact with drinking water to be essentially lead free (less than 0.25% weighted average). For further information about how the law determines what is lead free, rules regarding which plumbing products must be lead free, and who these laws will affect, please visit our LEAD FREE Plumbing Information page.

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