GWZJHP Pneumatic Thin Film Heat Dissipation Chip High Temperature Control Valve

Application of GWZJHP High Temperature Regulating Valve

GWZJHP adopts a pneumatic thin film actuator and a regulating valve component with a heat dissipation structure, targeting high-temperature process pipelines that require continuous regulation. The actuator drives the valve stem and valve core to move in a straight line, changing the flow area inside the valve; After selecting the locator, position control is formed by the control signal and valve position feedback.

The function of heat sink and valve cover

The heat sink reduces the thermal impact transmitted along the valve stem and cover to the packing area by expanding the heat dissipation area. It cannot independently increase the pressure and temperature rating of the entire valve, nor does it mean that it is equipped with corrugated pipes, active air cooling, or heat shields. Whether to extend the valve cover, special packing or bellows seal should be determined based on the medium, temperature and leakage requirements.

High temperature materials and pressure boundaries

The valve body, valve cover, valve core and seat, valve stem, gasket and packing all need to be checked for the appropriate temperature range. The series material options are not universal configurations for the same high temperature, and cast iron, carbon steel, and stainless steel cannot be considered equally applicable. The working pressure varies with temperature and material. When selecting, it is necessary to provide the normal temperature, design temperature, start stop temperature difference, and pressure before and after the valve. The allowable operating conditions cannot be determined solely by the high temperature name or PN number.

Flow rate, pressure difference, and pneumatic configuration

Calculate Cv/Kv, valve seat size, and working opening based on minimum to maximum flow rate, and evaluate the risks of steam or gas noise, liquid cavitation, and flash evaporation. The actuator is matched according to the required thrust, maximum closing pressure difference, and fail safe position. The air source pressure, input signal, valve position feedback, and explosion-proof protection requirements shall be confirmed according to the selected locator and actuator data, and we do not promise to support them all by default.

Installation insulation and maintenance

The pipeline is equipped with independent supports, installed according to the flow direction, and the valve cover and actuator maintenance space are reserved. The insulation range should follow the confirmation diagram and installation instructions, and the valve cover, heat sink, and accessories used for heat dissipation should not be arbitrarily wrapped as a whole. Debug and check signal direction, travel, and feedback, and complete isolation, cooling, pressure relief, and energy locking before maintenance.