Reverse Delay Valve

Connect external vacuum source to port on colored (non-white) side of delay valve. Connect one end of a 24" rubber hose to vacuum gauge and the other end to port on white side of valve.
With elapsed time device in view and a constant 10 in. Hg of vacuum applied, note time required for gauge pointer to move from 0 in. Hg to 8 in. Hg.

If valve fails to meet time limits, replace valve. If valve meets specifications, install with non-white side toward vacuum source.

Reverse Delay Valve Time Limits⁽¹⁾

Valve Color

Min. Time

Max. Time

White/Purple

0.3

0.7

White/Gray

0.6

1.6

White/Gold

0.8

2.3

White/Brown

1.0

3.0

White/Yellow

4.5

13.2

White/Red

14.0

47.2

⁽¹⁾	Time in seconds.