Parker GG | Pipe Couplings

This Section contains adapters with thread types including NPT, NPTF, BSPT, BSPP, SAE UN/UNF, and Metric. All the threads in this section are made to industry specifications with conformance shown in table on the right.
Thread Standard

NPT

ANSI B1.20.1, FED-STD-H28/7

NPTF

SAE J476, ANSI B1.20.3, FED-STD-H28/8

BSPT

BS 21, ISO 7/1

BSPP

BS 2779, ISO 228/1

Metric

ISO 261, ANSI B1.13M, FED-STD-H28/21

UN/UNF*

ANSI B1.1, FED-STD-H28/2

*Class 2A or 2B

Parker Pipe Coupling Configurations

 Parker Pipe Coupling

 

Pipe Coupling

Part #: GG
Manufacturer: Parker

 

NPTF / NPTF


TUBE
FITTING
PART #

END SIZE

C
HEX
(in.)

L
(in.)

W
(in.)

W1 (in.)

Dynamic
Pressure
(x 1,000 PSI)

 

1
NPTF

2
NPTF

 

-S

-SS

-B

 

1/8 GG

1/8 - 27

1/8 - 27

5/8

0.75

0.63

0.63

6.0

6.0

3.9

 

1/4 x 1/8 GG

1/4 - 18

1/8 - 27

3/4

0.94

0.75

0.63

6.0

6.0

3.9

 

1/4 GG

1/4 - 18

1/4 - 18

3/4

1.13

0.75

0.75

6.0

6.0

3.9

 

3/8 x 1/8 GG

3/8 - 18

1/8 - 27

7/8

1.03

0.88

0.63

6.0

6.0

3.9

 

3/8 x 1/4 GG

3/8 - 18

1/4 - 18

7/8

1.13

0.88

0.75

6.0

6.0

3.9

 

3/8 GG

3/8 - 18

3/8 - 18

7/8

1.13

0.88

0.88

6.0

6.0

3.9

 

1/2 x 1/8 GG

1/2 - 14

1/8 - 27

1 1/8

1.06

1.13

0.63

6.0

6.0

3.2

 

1/2 x 1/4 GG

1/2 - 14

1/4 - 18

1 1/8

1.38

1.13

0.75

5.0

6.0

3.2

 

1/2 x 3/8 GG

1/2 - 14

3/8 - 18

1 1/8

1.50

1.13

0.88

5.0

6.0

3.2

 

1/2 GG

1/2 - 14

1/2 - 14

1 1/8

1.50

1.13

1.13

5.0

6.0

3.2

 

3/4 x 1/4 GG

3/4 - 14

1/4 - 18

1 3/8

1.55

1.36

0.75

4.0

4.8

3.1

 

3/4 x 1/2 GG

3/4 - 14

1/2 - 14

1 3/8

1.88

1.36

1.13

4.0

4.8

3.1

 

3/4 GG

3/4 - 14

3/4 - 14

1 3/8

1.53

1.38

1.38

4.0

4.8

2.6

 

1 GG

1 - 11 1/2

1 - 11 1/2

1 5/8

1.89

1.63

1.63

3.0

3.6

1.9

 

1 x 1/2 GG

1 - 11 1/2

1/2 - 14

1 5/8

1.77

1.63

1.13

3.0

3.6

1.9

 

1 x 3/4 GG

1 - 11 1/2

3/4 - 14

1 5/8

1.77

1.63

1.38

3.0

3.6

1.9

 

1 1/4 GG

1 1/4 - 11 1/2

1 1/4 - 11 1/2

2

1.93

2.00

2.00

2.5

3.0

1.9

 

1 1/4 x 1 GG

1 1/4 - 11 1/2

1 - 11 1/2

2

1.93

2.00

1.63

2.5

3.0

1.9

 

1 1/2 GG

1 1/2 - 11 1/2

1 1/2 - 11 1/2

2 3/8

1.93

2.38

2.38

2.0

2.4

1.5

 

1 1/2 x 1 1/4 GG

1 1/2 - 11 1/2

1 1/4 - 11 1/2

2 3/8

1.93

2.37

2.37

2.0

2.4

1.5

 

2 GG

2 - 11 1/2

2 - 11 1/2

2 7/8

1.97

2.88

2.88

2.0

2.4

1.5

 

 


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