Electric main control valves, series 871

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Application range	Gear motor: controls the opening/closing of the main control valve and consequently the discharging of the liquid via the system. (Open valve: the liquid is delivered to the operating circuit; closed valve: the liquid is delivered to the tank) Pressure relief valve: Releases the available liquid surplus when the programmed maximum pressure is reached. The valve can be adjusted manually Suitable for screwed fittings When using fittings in modular form, use an adapter (463/ T5 or 464/ T5)
Properties	Housing made from fibreglass-reinforced nylon Inner parts made from Delrin® and Inox steel AISI 303 Viton® seals Are equipped with hose nipples for the process. Further connections can be found under "easylink" P214373 (series 464) and P217817 (series 471)
Consists of	Composed of an electrical main switch valve (with gear motor) with adjustable pressure-relief valve