IMPORTANT NOTICE: OUR EMAIL SERVER IS back online. Thank you for your patience and sorry for any inconvenience! If you require and information please contact us. Due to Covid-19 restrictions our contact us page is usually the fastest way to get in touch with a customer service agent.


Your Cart is Empty



Speedmaster Engine Throttle Control 8.903-840.0

Speedmaster Throttle Control

Stop overworking the engine and pump during bypass.

Decelerator reduces engine speed when pump head pressure drops below 215psi, reduces flow during bypass, slows recirculation heat build-up.

  • 3500 PSI rated
  • 300°F max
  • A major system saver for gas engine units
  • Machined-brass body
  • Stainless-steel gland components
  • 1/4" male connect
  • Viton seals
  • 42" lined and covered control cable
Engine speeds infinitely adjustable for “fine tuned” system performance