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Description
Product Description
The DECAR ZZY Type Self-operated Single-seat Pressure Regulating Valve is designed for automatic pressure control in pipeline systems without the need for external energy or auxiliary control equipment. The valve operates by utilizing the pressure of the regulated medium to drive the actuator, enabling stable and reliable pressure regulation.
The valve incorporates a single-seat control structure with a diaphragm actuator. Pressure changes within the system act directly on the diaphragm, adjusting the valve opening to maintain the required downstream pressure level. This configuration allows the valve to provide stable operation with sensitive response to pressure variations.
The ZZY series is commonly used in applications requiring pressure reduction, pressure stabilization, or pressure relief within industrial pipelines. The design supports use across a range of fluid media including gases, liquids, and steam depending on configuration and material selection.
This valve series is available in multiple sizes and pressure classes, with pressure regulation ranges segmented to suit different process requirements. The design emphasizes stable regulation, simple installation, and dependable performance in industrial environments.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | DECAR |
| Model | ZZY |
| Valve Type | Self-operated Pressure Regulating Valve |
| Valve Structure | Single-seat |
| Actuation Method | Self-operated diaphragm actuator |
| Nominal Diameter (DN) | 20 – 300 mm |
| Rated Flow Coefficient (Kv) | 5 – 900 |
| Rated Stroke | 8 – 65 mm |
| Nominal Pressure | PN16, PN25, PN40, PN64 |
| Flow Characteristic | Quick opening |
| Adjustment Accuracy | ±5% |
| Operating Temperature | −60°C to 350°C (special design below −60°C or up to 550°C) |
| Leakage Class | Hard seal: Grade IV / Soft seal: Grade VI (GB/T4213 or FCI 70-2) |
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