Siemens SKP55.013U1 Servo Actuator

Electrohydraulic actuator-regulator Siemens SKP55.013U1 (art. 884.712.210) 3 in 1: safety valve, differential pressure regulator and gas-air ratio control Siemens SKP55.013U1 is a high-tech electrohydraulic actuator of a new generation. Unlike standard servos, this model combines three critical units in one housing: a safety shut-off valve, a precise differential pressure regulator and a gas/air ratio maintenance system 1:1. This solution is specially designed for forced draft burners and heat recovery systems where standard regulators cannot cope due to variable back pressure in the furnace. If you need stable and economical operation of equipment even under changing external conditions, SKP55.013U1 is your choice. Key advantages Intelligent 1:1 ratio (dP/dP): The built-in regulator automatically maintains equal gas and air pressure differentials. This means that when the draft fan changes or the air filter becomes clogged, the burner will not lose efficiency or "bang" during ignition - the mixture will always be stoichiometrically correct. Two functions in one housing: Replacement of three separate units (valve + regulator + servo) with one. This not only reduces the cost of piping, but also reduces the weight of the gas train, saves space in the boiler room and reduces the number of potential gas leak points. Safety EN 161: The actuator is certified for use in safety systems. In case of power loss or emergency, the valve closes instantly by spring (less than 0.8 seconds). Opening is smooth (approx. 2 mm/s), guaranteeing safe purging and soft ignition without bang. Visual control and energy efficiency: The housing is equipped with an LED indicator.