Extreme Safety High Pressure Attenuators

Grace Precision Products is pleased to offer our patented* Extreme Safety Attenuator Technology, for both 60KSI and 90KSI service waterjet intensifier pumps. The wetted attenuator body and heads are fully encased in a thick stainless steel outer shell, which also serves as a “hollow stud” to hold the heads in place against the pressure. In the unlikely event of a wetted pressure component fatigue failure, the event will be safely contained within the shell.


  • All wetted parts enclosed in a robust stainless steel safety shell
  • Engineered, manufactured and tested using methods of the ASME Boiler and Pressure Vessel Code, Section VIII Division 3 for safety 
  • All potential failure modes engineered for safe leak-before-burst, including at the outer shell closure threads
  • Attenuator body and head wetted bores mechanically treated for long life

Attenuator models are offered in 60KSI (1.29L) and 90KSI (0.96L) versions, as well
as a 94KSI (0.88L) version that is a drop-in replacement for Flow 94KSI pumps.