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Pneumatic/Electric/Hydraulic Controlled Regulating Metallic Valve,High Temperature Single-Seat Adjusting Valve(ZPL210 Series) 

Products Introduction

With the development of industrial automation, regulating valves play a pivotal role in the automation process. They possess both static and dynamic characteristics. The static characteristic refers to the flow characteristic of the valve, which is influenced by factors such as valve's size, valve core & seat structure and the actuator type, valve positioner, inlet pressure and outlet pressures, as well as fluid properties. On the other hand, the dynamic characteristic is controlled by the actuator and positioner. Regulating valve belong to the control valve series and primarily serve to regulate medium(fluid) pressure, flow rate, and temperature.

Classification Of Regulating Valves

By Opening Mode:

1.Vertical Opening: Single-seat valves, double-seat valves, sleeved valves, angled valves, three-way valves, diaphragm valves

2.Rotation Angle Opening: Butterfly valves, ball valves, eccentric rotary valves, and full-function ultra-lightweight control valves.

By Driving Mode:

1. Pneumatic control valve: compressed air as the source

2. Electric control valve: electricity as the source

3. Hydraulic control valve: liquid medium (such as oil, etc.) pressure as the source

By Adjustment Mode:

1. Regulating type

2. Cut-off type

3. Regulating + cut-off type

By Flow Characteristic Mode:

1. Linear type

2. Equal percentage type(EQ%)

3. Parabolic type

4. Quick Opening type

★Users can select based on the operating conditions (pressure differential, temperature, medium state, medium flow

direction, installation method) and the required leakage rate.

Application And Characteristics

ZPL210(straight-through single seat), ZPL410(Angle-through single seat) series single-seat valve is an unbalanced regulating valve, There only have one core and one seat in valve's body, the advantage is less leakage, easy to close, or even completely cut off, so based on the structure have regulating type and cut-off type. The shortcoming is that the medium has a strong thrust force on the core, that is, the unbalanced force is strong, especially for the high pressure and large diameter valve are more serious.So, it is suitable for the condition requiring small leakage and small differential pressure. Therefore, the single-seat regulating valve is generally a low-pressure differential valve within the diameter of DN15 to DN100. Single-seat regulating valves are widely used in industrial such as electric utility, metallurgy, chemical, petroleum, textiles, pharmaceuticals, papermaking for the automation of production processes.
 

ZPL220(straight-through sleeve valve), ZPL420(Angle-through sleeve valve) series valve is a balanced type of regulating valve,the core's guiding area is big, can improve the oscillation caused by vortex and impact, have good shock-resistance, allowed pressure difference, stable operation, It can reduce noise by about 10dB compared to a regular single-seat control valve. The application of these valves is widespread in industries that demand reliability and exceptional shut-off performance, particularly in low-temperature and high-pressure process pipelines. With their extensive range of materials and diverse design forms, these valves find versatile applications across various industrial.

ZPL310 (three-way diverging) and ZPL320 (three-way converging) series valves are designed to change the direction of medium flow. They consist of three ports connected to pipelines, equivalently combining two single-seat valves into one unit. These valves can be classified as diverging valves (with one inlet and two outlets) or converging valves (with two inlets and one outlet). When it's working, one port is fully open while the other remains completely closed, resulting in a force similar to a single-seat valve with significant unbalanced force. The valve core of the three-way valve is identical to that of a sleeve valve, featuring two types of throttling areas: a large window opening and small hole drilling (jet type). The latter serves the purpose of reducing noise levels and minimizing resonance effects. This series exhibits characteristics such as compact structure, lightweight design, responsive action, precise flow control capabilities, direct compatibility with control instruments input signals (4-20mA DC, 0-10mA DC or 1-5V DC), as well as single-phase power for operational control purposes. It enables automatic regulation and control over fluid mediums within process pipelines while accurately managing parameters like pressure, flow rate temperature, liquid level for gas liquids and

steam mediums by maintaining them at desired set values. Additionally suitable for dividing fluids into multiple outlets or merging multiple fluids into a singular stream through its three-way configuration. These products find extensive application in industrial production processes across various sectors including chemical manufacturing petroleum

refining metallurgy power generation light industry papermaking pharmaceuticals.

Materials For Main Parts