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Model 108SA-3 Surge Anticipation- Hydraulic Type

Model 108SA-3 Surge Anticipation- Hydraulic Type

The Model 108SA-3 operates as a pressure relief valve by opening at a pressure above its set point. In addition, it provides extra protection against surges associated with sudden stoppage of the pumps (e.g., power failure) by opening on the resulting low pressure wave, in “anticipation” of the high pressure wave to follow. By being already open when the high pressure wave hits, any potential surge is harmlessly bypassed to atmosphere. Typical examples include pump systems, municipal distribution systems and irrigation systems.


  • Low pressure opening
  • Relief Valve: Limits inlet pressure by relieving excess pressure
  • Operates over a wide flow range
  • Low and high pressures are adjustable
  • Quick opening and adjustable closing speed
  • Can be maintained without removal from the line
  • Factory tested and can be pre-set to requirements
Surge Anticipation – Hydraulic Type
Model SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
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