Parker FG | Expanders / Adapters

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 Reducer, Expander, & Conversion Configurations

 Parker Expander / Adapter

 

Expander / Adapter

Part #: FG
Manufacturer: Parker

 

NPTF / NPTF

TUBE
FITTING
PART #

END SIZE

C1
HEX
(in.)

L1
(in.)

Dynamic
Pressure
(x 1,000 PSI)

  

1
NPTF

2
NPTF

  

-S

-SS

-B

  

1/8 x 1/16 FG

1/16 - 27

1/8 - 27

5/8

1.03

6.0

6.0

3.3

  

1/8 FG

1/8 - 27

1/8 - 27

5/8

1.03

6.0

6.0

3.3

  

1/4 x 1/8 FG

1/8 - 27

1/4 - 18

3/4

1.21

6.0

6.0

3.9

  

1/4 FG

1/4 - 18

1/4 - 18

3/4

1.39

6.0

6.0

3.9

  

3/8 x 1/8 FG

1/8 - 27

3/8 - 18

7/8

1.25

6.0

6.0

3.3

  

3/8 x 1/4 FG

1/4 - 18

3/8 - 18

7/8

1.44

6.0

6.0

3.9

  

3/8 FG

3/8 - 18

3/8 - 18

7/8

1.44

6.0

6.0

3.9

  

1/2 x 1/8 FG

1/8 - 27

1/2 - 14

1 1/8

1.50

5.0

6.0

3.2

  

1/2 x 1/4 FG

1/4 - 18

1/2 - 14

1 1/8

1.69

5.0

6.0

3.2

  

1/2 x 3/8 FG

3/8 - 18

1/2 - 14

1 1/8

1.69

5.0

6.0

3.2

  

1/2 FG

1/2 - 14

1/2 - 14

1 1/8

1.87

5.0

6.0

3.2

  

3/4 FG

3/4 - 14

3/4 - 14

1 3/8

1.93

4.0

4.8

2.6

  

3/4 x 1/4 FG

1/4 - 18

3/4 - 14

1 3/8

1.75

4.0

4.8

2.6

  

3/4 x 3/8 FG

3/8 - 18

3/4 - 14

1 3/8

1.75

4.0

4.8

2.6

  

3/4 x 1/2 FG

1/2 - 14

3/4 - 14

1 3/8

1.93

4.0

4.8

2.6

  

1 FG

1 - 11 1/2

1 - 11 1/2

1 5/8

2.37

3.0

3.6

2.3

  

1 x 1/4 FG

1/4 - 18

1 - 11 1/2

1 5/8

2.01

3.0

3.6

2.3

  

1 x 1/2 FG

1/2 - 14

1 - 11 1/2

1 5/8

2.19

3.0

3.6

2.3

  

1 x 3/4 FG

3/4 - 14

1 - 11 1/2

1 5/8

2.19

3.0

3.6

2.3

  

1 1/4 FG

1 1/4 - 11 1/2

1 1/4 - 11 1/2

2

2.50

2.5

3.0

1.9

  

1 1/4 x 1 FG

1 - 11 1/2

1 1/4 - 11 1/2

2

2.47

2.5

3.0

1.9

  

1 1/2 x 1 FG

1 - 11 1/2

1 1/2 - 11 1/2

2 3/8

2.47

2.0

2.4

1.5

  

1 1/2 x 1 1/4 FG

1 1/4 - 11 1/2

1 1/2 - 11 1/2

2 3/8

2.50

2.0

2.4

1.5

  

2 FG

2 - 11 1/2

2 - 11 1/2

2 7/8

2.66

2.0

2.4

1.5