Pressure Performance Data
The following table is a breakdown of hydraulic pressure performance by thread style and size for steel adapters. The table is based on limited laboratory test data, and is intended only as an approximate guide to field performance of Tompkins's products. Figures shown are minimum failure pressures in PSI. Tompkins recommends maximum operating pressures which provide a 4:1 safety factor.
Dash Size

-04

-05

-06

-08

-10

-12

-14

-16

-20

-24

-32

SAE 37° Flare Male JIC

20,000

20,000

20,000

18,000

14,000

14,000

12,000

12,000

10,000

8,000

6,000

SAE 37° Flare Swivel JIC

18,000

16,000

16,000

16,000

12,000

12,000

10,000

10,000

8,000

6,000

4,500

Male Pipe NPTF

20,000

-

16,000

12,000

-

10,000

-

8,000

4,600

4,000

4,000

Female Pipe NPTF

20,000

-

16,000

12,000

-

10,000

-

8,000

4,600

4,000

4,000

Female Pipe Swivel NPSM

18,000

-

16,000

16,000

-

12,000

-

10,000

8,000

6,000

4,500

Male O-Ring Boss

20,000

20,000

20,000

18,000

14,000

14,000

12,000

12,000

10,000-

8,000

6,000

Straight Thread O-Ring Adjustable

18,000

16,000

16,000

16,000

12,000

12,000

10,000

10,000

8,000

6,000

-

Female O-Ring Boss

20,000

20,000

20,000

18,000

14,000

14,000

12,000

12,000

10,000

8,000

-

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