Digikey part number 384-1012-ND is what I just ordered, adjustable pressure switch 1-4 psig, $14. There are a variety of different pressures and ranges available - easily found searching digikey for "pressure switch."

They come in 120/240 VAC and 30 VDC flavors - I'm not sure if those are requirements or capabilities SO DON'T RUN OFF AND BUY ONE JUST YET. Joey will let you know how his works.

 

Sweetness Joey D.

might have to kiss you

 

i saw some on ebay for sale. the guy had a few diff PSI ranges too

 

So what are you planning to control with this thing? Wastegate soleniod? VTEC activation by boost pressure instead of RPM?

Older (mid-'80's) GM low side AC cutout switches are preset to 30psi, adjustable up (useless) or down to, ---- I guess 0psi. New they're cheap, from the junkyard they're free.

 

Also used to control water/methenol injection for forced induction vehicles.

 

Ding ding! We have a wiener!!

 

vw makes an electric on way valve. when you give it 12v it opens the valve.


edit: i suck at life

 

There are a whole bunch of purge solenoids and other useless crap on a Honduh that can be used for the same thing. This is not a pressure switch.

 

Nice find.

 

GODAMMIT...I forgot to order when I placed my Digikey order this week

I forgot to order a whole bunch of ----...