ZAZP Electric Single-Seat Regulating Valve
I. Introduction:
The ZAZP electric single-seat control valve, formed by combining its electric actuator with various valve bodies, integrates the characteristics of different valve types. Powered by a single-phase AC 220V power supply, the electric control valve receives unified standard electrical signals 0-10mADCor4-20mADC to automatically adjust the valve opening, achieving automatic control of parameters such as working flow, pressure, temperature, and liquid level. It supports remote control and is a key component of automatic process regulation in production. It is widely used in automatic control systems of industries including power, metallurgy, light industry, food, petroleum, and chemical engineering. The ZAZN electric double-seat control valve features a compact structure, light weight, sensitive operation, large valve capacity, excellent flow characteristics, and easy disassembly and assembly. The company boasts strong technical strength and extensive experience in valve manufacturing, with an outstanding team that pursues excellence and continuous innovation, dedicated to the R&D and production of industrial valves. Equipped with advanced processing equipment and complete testing methods, the company maintains strict quality management and a quality assurance system. All products have traceability and complete quality files, providing a solid foundation for comprehensive after-sales services.
II. Features:
1. The valve body of the electric double-seat control valve adopts an equal-section low-resistance flow channel designed based on fluid mechanics principles, increasing the rated flow coefficient by 30%.
2. It has a large adjustment range, with a固有可调比 of 50, and offers linear and equal-percentage flow characteristics.
3. The regulating and shut-off type adopts a soft-seat core, meeting the Class VI leakage standard (zero leakage).
4. The servo amplifier uses deep dynamic negative feedback to enhance automatic regulation accuracy.
5. The electric operator comes in multiple forms, compatible with 4~20mA DC or 0~10mA DC signals.
6. The electronic electric control valve can directly control the valve opening via current signals without a servo amplifier.
7. The bellows-sealed control valve forms a complete seal around the moving valve stem, eliminating fluid external leakage.
III. Working Principle:
The upstream pressure P1 of the working medium is throttled through the valve core and seat, converting to downstream pressure P2. Meanwhile, P1 is input via a control line to the upper diaphragm chamber of the actuator, acting on the top disc. The generated force balances the reaction force of the spring, determining the relative position of the valve core and seat and controlling the upstream pressure. When flow and pressure are controlled in combination, the valve operates sequentially according to the input order of the flow valve and pressure valve (downstream). If either the flow or pressure (downstream) parameter reaches or exceeds the set value, the valve will act accordingly to meet various on-site control requirements.
IV. Parts Materials:
Compact Electric Control Valve (Single-seat Structure) | Compact Electric Control Valve (Cage-guided Structure) | ||||
1 | Valve Body | WCB, CF8, CF8M, CF3 | 1 | Valve Body | WCB, CF8, CF8M, CF3 |
2 | Gasket | PTFE, Metal Graphite Gasket | 2 | Gasket | PTFE, Metal Graphite Gasket |
3 | Valve Seat | 304, 316, 316L | 3 | Cage | 304, 316, 316L |
4 | Valve Core Assembly | 304, 316, 316L | 4 | Valve Core | 304, 316, 316L |
5 | Guide Sleeve / Lock Nut | 304, 316, 316L / Copper | 5 | Middle Gasket | PTFE, Metal Graphite Gasket |
6 | Middle Gasket | PTFE, Metal Graphite Gasket | 6 | Valve Bonnet | PTFE Graphite Gasket |
7 | Valve Bonnet | WCB, CF8, CF8M, CF3 | 7 | Valve Stem | 304, 316, 316L |
8 | Packing | PTFE, Flexible Graphite | 8 | Packing | PTFE, Flexible Graphite |
9 | Packing Gland | WCB, CF8, CF8M, CF3 | 9 | Packing Gland | WCB, CF8, CF8M, CF3 |
| Machinery & Equipment/Valves/Control Valves | |
