hp-Technik DRV18EL pressure regulator

The hp-Technik DRV18EL pressure regulator is a component listed in the oil filters, coils, tubes & hoses category. A pressure regulator of this type is installed in the fuel supply line between the pump and the burner nozzle. Its function is to maintain a stable downstream pressure independently of variations in upstream pressure or flow demand. This ensures consistent atomisation at the nozzle, which directly affects combustion quality and firing rate stability. Selection of such a regulator is based on the required pressure range, the flow capacity of the burner, and the connection thread sizes. Attention must be paid to the maximum allowable inlet pressure and the adjustment range of the regulator. For oil systems, the regulator must be compatible with the viscosity of the fuel and any preheating applied. When replacing an existing regulator, verify the thread type (metric or BSP), the orientation of the adjustment screw or knob, and whether the regulator is supplied with a pressure gauge port. Common points to check during replacement: the condition of the diaphragm or piston, the spring for signs of fatigue, and the sealing surfaces. A regulator that fails to maintain set pressure can cause poor ignition, sooting, or unstable burner operation. Ensure that the new unit matches the original part’s pressure setting capability and connection size, and that any bypass or return line connections are correctly replicated.