Diesel Stop Solenoids: Finding the Right Fit

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A user is designing a stop system for an old diesel engine, requiring a pull-type solenoid with a stroke of 9/16" to 1 1/2" and a return spring of at least 20 lbs for continuous duty. They have explored options from brands like F. W. Murphy and Trombetta but found them inadequate for their specifications. The Woodward/Synchrostart line has suitable models, although they are expensive. The user seeks recommendations for additional manufacturers that produce diesel stop solenoids that meet these criteria. The discussion highlights the need for specific solenoid features for effective engine operation.
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I am designing a stop system for a old diesel engine. The application I am using needs a pull type solenoid that can have a stroke of 9/16" - 1 1/2". it needs to have a return spring of at least 20 lbs. It needs to be continuous duty ( probably 2 coil).This will be used as a "engage to run" setup. The spring loaded solenoid will push the injector shut when power is removed.



I have looked at several brands including F. W. Murphy and Trombetta. These do not seem to meet my requirements. I did however find some in the woodward/synchrostart line that will work, however they are quite expensive. Can anyone tell me what some other companies are that make diesel stop solenoids?

These are the models I have looked at:

F. W. Murphy #RP2309B

Trombetta 600 Series
Woodward # 2370 - 12 -E2U1B5S2
 
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