Regulators
From Hauck Burner and Kromschroder

Combustion Control Accessories Gas Pressure Regulator (GPR)
Combustion Control Accessories Oil Pressure Regulator (OPR)
GIK - Gas Ratio Regulator
MRO Oil-Air Ratio Regulators
PCR Pilot Control Regulator
PRO Oil Pressure Regulator
RRG Ratio Regulator - Gas