Speed Switches

Speed switches are used to monitor engine rpm in automatic diesel engine overspeed protection systems.  In the event of an engine overspeed condition, the speed switch will immediately take action to shut down the diesel engine.  We have a several types of switches for use in a wide range of automatic shutdown systems including electric, hazardous area electric, and hydro-mechanical switches.


4110 Hydro-Mechanical Overspeed Sensing Valve

Adjustable range: 800 - 4200 RPM  
Repeatability: +/- 2%  
Body: Gulfproofed (anodized) aluminum
Internals: Steel and stainless steel
Seals: Viton (oil) Buna N/Nitrile (air)
Two-way valve thread: 1/4” NPT  
Flow Coefficient: Kv = 0.56 Cv = 0.65
Max. valve pressure: 5.5 bar 80 psi
Accuracy: +/- 5%  
Mounting thread (std): 7/8 - 18 heavy duty SAE  

See datasheet for complete specifications