12v vaccum pump pressure valve

[plymouth1937]

Hi i have problem whid lack of vaccum on my dodge wild cam and the problem that follows so I made a 12v vac pump from a generator mounted pump,made a adapter for the axle to a 12v motor but I dont want it to run the hole time onley when vaccum drops below 15 cant figure out what pressure switch to use,i knowe that a switch from a ac system colde work but I cant get the switch pressure,yes you can bye a kit that works like I want but 450 dollar ws 10 dollar is a no brainer,any tip

 

[67Dart273]

One manufacturer, I did not research dealers/ availability

Vacuum Switches | Whitman Controls

Another
VM - Nason PTC

Over in your neck of the world I'd bet someone like Siemens would have them

If worst comes to worst, make one. Say a vacuum advance can, make a bracket and use a switch such as a microswitch.

 

[plymouth1937]

One manufacturer, I did not research dealers/ availability

Vacuum Switches | Whitman Controls

Another
VM - Nason PTC

Over in your neck of the world I'd bet someone like Siemens would have them

If worst comes to worst, make one. Say a vacuum advance can, make a bracket and use a switch such as a microswitch.

Ok thank il look in to it

 

[mpgmike]

It's doubtful that the switch can carry the current needed by the pump motor. You should use a relay where the switch only powers the relay, and the relay powers the pump.

 

[plymouth1937]

It's doubtful that the switch can carry the current needed by the pump motor. You should use a relay where the switch only powers the relay, and the relay powers the pump.

Hi yes thanks

 

[plymouth1937]

Im gona try a idé,run the pump via the brake light switch,when I brake the pump starts,when the pump starts iv got full vaccum