Electric cage type regulating valve ZDLM-64P

Electric Cage Control Valve ZDLM-64P Product Description

The ZDLM-64P electric cage type regulating valve adopts a straight through cage type guide, balanced valve core, flange connection, and linear electric actuator, used for process flow control that meets structural and pressure difference conditions. This model follows the configuration instructions for PN64 and CF8 cast stainless steel valve bodies. The design of cage guide and balance valve core needs to be evaluated based on actual flow rate, working pressure difference, valve internals, and actuator capabilities. It cannot be determined that it is suitable for all high pressure difference operating conditions solely based on the PN64 level.

Product Specifications

Structure and working mode

ZDLM-64P adopts a straight through cage guide and balanced valve core structure. The cage sleeve provides guidance for the movement of the valve core, and the linear electric actuator outputs linear thrust, causing the valve core to move along the specified stroke and change the effective flow area. The balanced valve core can reduce the unbalanced force generated by the medium in the corresponding design, but the allowable pressure difference is still limited by the valve internals, sealing structure, and actuator output capacity. This product is a two-way regulating valve and does not undertake the task of multi way reversing. The power supply, control signals, position feedback, and power-off status should correspond to the actual supporting electric actuator.

Caliber pressure and material

The nominal pressure of this ZDLM-64P is PN64, and the valve body material is CF8 cast chromium nickel stainless steel. It adopts cage guide, balanced valve core and metal sealing structure. The selection of materials also needs to take into account the corrosiveness of the medium, working temperature, and pressure temperature rating requirements. The actual allowable pressure difference is related to the valve core balance structure and actuator thrust. For steam, easily crystallizable and particulate media, the valve internals, packing, abrasion and erosion conditions should also be checked. Other pressure or material configurations should be described separately according to the corresponding specific models.

Product Features and Applications

The cage type guiding and balancing valve core structure of ZDLM-64P can be used for industrial control circuits with clear requirements for valve core guidance and pressure differential force. For steam pressure reduction and high pressure difference control, further calculation of flow capacity, allowable pressure difference, and evaluation of noise, cavitation, or flash evaporation risks should be conducted. The actual leakage level of metal seals needs to be based on corresponding testing criteria, and it cannot be inferred that they have tight cutting performance solely based on the cage structure. Electric actuators and electrical accessories in hazardous areas should meet the corresponding explosion-proof configuration requirements on site.

Installation and commissioning

Before installation, the nameplate, specified flow direction, flange standard, and structural dimensions of ZDLM-64P should be checked, and welding slag and hard debris inside the pipe should be removed to prevent foreign objects from entering the cage and valve core activity area. During installation, ensure that the mating flanges are aligned to avoid transmitting pipeline stress to the valve body. Maintenance space should be reserved around the electric actuator, and cable entry and wiring should comply with equipment requirements. During debugging, check the valve core stroke, running direction, limit, valve position feedback, and control logic, and complete sealing and action checks according to regulations.

operation and maintenance

During operation, attention should be paid to power supply, control signals, valve position feedback, working pressure difference, abnormal noise, vibration, and external leakage. If the valve core moves slowly or cannot be in place, the power supply, limit, transmission mechanism, and control module of the electric actuator should be checked first, and then the valve stem, cage guide surface, balance seal, and valve core seat status should be checked. For working conditions with significant pressure fluctuations, it is also necessary to check whether there is wear, jamming, or abnormal erosion on the valve internals. Before maintenance, pipeline isolation, pressure relief, and power isolation should be completed. After maintenance, travel and sealing inspections should be carried out according to regulations.

Q&A on the selection of electric cage type regulating valve

Order Information List

Suggest providing information on medium composition, design and operating temperature, normal maximum and minimum flow rates, pressure before and after the valve, maximum working pressure difference, flange standards, flow characteristics, allowable leakage requirements, power supply, control signals, valve position feedback, and power-off status. Fouten Flow Control (Jiangsu) Co., Ltd. can be used to verify the cage valve internals, balance structure, linear electric actuator, and control accessory configuration of ZDLM-64P.