The ZXM/ZDLM/ZAZM series pneumatic/electric sleeve control valves are pressure-balanced control valves featuring a sleeve-guided, pressure-balanced double-sealed valve core structure. They offer overall advantages such as stable operation, high allowable pressure difference, and low noise. Equipped with multi-spring actuators or electric actuators, they are suitable for applications with large flow rates, significant pressure differentials across the valve, and non-stringent leakage requirements.
This series of products comes in various models, including standard, bellows-sealed, insulation-jacketed, high-temperature, and low-temperature types. The nominal pressure ratings are PN (MPa) 1.6, 2.5, 4.0, 6.4, 10.0; the valve body size range is DN (mm) 40–400; suitable fluid temperatures range from -196 to +560°C; leakage standards include Class IV, V, VI; flow characteristics include linear and equal percentage. Multiple specifications are available for selection
Features
- Adopt a balanced valve core structure with minimal axial unbalance force, allowing for a large pressure difference and good stability.
- The sleeve offers strong interchangeability, is easy to disassemble, and convenient to maintain.
- The all-metal valve structure is suitable for various working conditions and meets Class II leakage standards. The ZXMQ soft-sealed structure valve core achieves Class VI leakage standards.
- The valve body is designed based on fluid mechanics principles, with a bottom-flow-guided cross-section, a large adjustable range, and a fixed adjustability ratio of 50.
- The actuator adopts a multi-spring structure, reducing height by 30% and weight by 30%.
This series of control valves adopts a modular design, allowing for different combinations and the use of various accessories.
ZXM standard model: Operating temperature range of -20 to +200°C, with a leakage class of Class II.
ZXM-G heat-dissipating model: Equipped with additional heat-dissipating fins on the valve cover, suitable for media temperatures ranging from -60 to +450°C.
ZXM-Q regulating cut-off model: Features a soft-sealed structure with a valve core achieving Class VI leakage standards.
ZXM-W bellows-sealed model: Forms a complete seal for the up-and-down moving valve stem, preventing fluid leakage.
ZXM-D low-temperature model: Uses a long neck valve cover and bellows seal, suitable for temperatures down to -196°C.