The false actuator kits work with the Delphi sealed rail kits to extend the testing abilities.
The false actuator trick the common rail pump into producing the maximum pump pressure which confirms the pump is able to work under maximum load.
Delphi DFP1 & DFP3.
Bosch CP1 & CP3.
Denso HP1, HP2 & HP3.
Siemens DCP type 1 & 2.