ZDLP electric single seat regulating valve

ZDLP electric single seat regulating valve

ZDLP consists of a single seat regulating valve body, valve core and seat, valve stem, and electric actuator. Denso receives configured control commands, drives the valve core to make linear motion, and adjusts the flow rate by changing the throttling area. It can also serve pressure, temperature, or liquid level control in a complete control loop, but not all variables can be controlled by one valve at the same time.

Single seat structure and closing capacity

The single seat structure has a set of main valve core and seat sealing pairs, and the closing ability depends on the valve internals, sealing form, medium pressure difference, and actuator thrust. We cannot promise the highest accuracy or zero leakage based solely on the name of a single seat. For media containing particles, erosion, blockage, and valve seat damage should be considered, and for larger pressure differentials, unbalanced forces and noise should also be evaluated.

Flow coefficient and operating condition data

The selection should provide the minimum, normal, and maximum flow rates, as well as the upstream and downstream pressure, medium state, density or gas composition, and working temperature for each operating condition. Calculate Cv/Kv and opening range based on these data, and then select valve seat diameter, flow characteristics, and DN. The caliber, pressure, and material listed in the column belong to a series of information and do not represent that any combination is applicable; Large caliber or special pressure configurations require independent confirmation of the manufacturing plan.

Electric actuators and signals

The electric actuator should be matched with the straight stroke, required thrust, stroke, adjustment frequency, and on-site power supply. 4–20mA、 Other analog quantities, switch contacts, or communication interfaces need to be confirmed according to the specific electric actuator and cannot be assumed to be fully supported. The feedback signal should also be specified separately from the input command. The ability to maintain position, open or close valves after power failure depends on the actuator and energy storage circuit, and is not automatically guaranteed by the ZDLP model.

Materials, Installation, and Maintenance

The materials for the valve body and internal components should be selected according to corrosiveness, temperature, and erosion conditions, and the packing and gasket should also be compatible. Install according to the valve body flow direction markings, leaving sufficient space for actuator and valve internals maintenance, and setting up necessary isolation and bypass. Check the full travel, feedback, limit and loop direction during operation; Isolate, depressurize, drain and lock the power supply before dismantling and inspection.