The diameter index safety system (DISS): I. uses different pitches and threads per inch II. uses internal and external threads III. is intended for low pressure ( 200 psi)

Question

The diameter index safety system (DISS):
I. uses different pitches and threads per inch
II. uses internal and external threads
III. is intended for low pressure (< 200 psi)
IV. is intended for high pressure (> 200 psi)

Quizplus · Accepted Answer

The Diameter Index Safety System (DISS) uses different pitches and threads per inch (I) and internal and external threads (II) to prevent misconnections. It is intended for low pressure applications (< 200 psi) (III).