High temp/pressure electric over oil valve source?

[Brian Diehl]

I'm looking for a "shrader" valve to use for forcing my transmission into torque converter lockup while climbing mountain grades in 1st or 2nd gear.  I searched on line and can't seam to find a 12v/24v DC valve capable of the high temperatures and pressures found on the high pressure supply port of the HT750 tranny.  I'm thinking the valve needs to handle upper 200s low 300s for temperatures and pressures up to 350lbs.  Any ideas of where to get a decently priced valve to handle these conditions?

[DrDave]

Hydraulic solenoid valves.

Check your local hydraulic supply store or even Grainger or McMasters.

Pretty standard ratings up to 3,000 psi. ( temp not an issue on them.)