ZZLP Self operated Flow Control Valve

We are a professional manufacturer of V130D05 self operated flow regulating valve/V131D05. Our independently developed and produced regulating valve has reliable quality, reasonable price, and complete after-sales service. The V130D05 self operated flow regulating valve/V131D05 is suitable for various light and heavy industries and building pipelines. Nen En quality, shared globally! Regulating valves are widely used in various fields such as chemical, petrochemical, petroleum, papermaking, mining, electricity, liquefied gas, food, pharmaceuticals, water supply and drainage, municipal, mechanical equipment supporting, electronic industry, urban construction, etc.

【control valve】Valve body type selection: There are many types of valve bodies for regulating valves, and commonly used valve body types include ① straight through single seat ② straight through double seat ③ angular ④ diaphragm ⑤ small flow ⑥ three-way ⑦ eccentric rotation ⑧ butterfly ⑨ sleeve type ⑩ spherical, etc. When selecting a regulating valve, the following considerations can be made: (1) Valve core shape and structure: mainly based on the selected flow characteristics and unbalanced forces. (2) Wear resistance: When the fluid medium is a suspension containing high concentrations of abrasive particles, the internal material of the valve should be hard. (3) Corrosion resistance: Due to the corrosive nature of the medium, it is advisable to choose valves with simple structures. (4) Temperature and pressure of the medium: When the temperature and pressure of the medium are high and vary greatly, valves with valve cores and seats that are less affected by temperature and pressure changes should be selected. When the temperature is ≥ 250 ℃, a radiator should be added. (5) Prevent flash evaporation and cavitation: Flash evaporation and cavitation only occur in liquid media. In the actual production process, flash evaporation and cavitation can cause vibration and noise, shortening the service life of valves. Therefore, when selecting valves, precautions should be taken to prevent flash evaporation and cavitation.

Model analysis of self operated flow regulating valve (overview):

【1】 Flow control valve: V130D05 (hard seal) V131D05 (soft seal)

Self operated flow control valve is an energy-saving control device that does not require external driving energy, relies on the pressure of the regulated medium itself as the power source and its medium pressure branching, and automatically adjusts according to the set value. It integrates detection, control, and execution functions into one valve, forming an independent instrument control system.

【2】 This product consists of a low flow resistance single seat (sleeve) valve body, pressure balancing component, commander, and actuator. It is a new generation of valve products that comply with international standards, characterized by:

1. Energy saving self-control system without the need for external driving energy. Low equipment cost;

2. Simple structure and low maintenance workload;

3. The set point is adjustable and has a wide range, making it easy for users to continuously adjust the flow within the set range;

4. Command operation type has faster dynamic response than direct action type. High precision and large adjustable ratio;

5. The valve adopts a pressure balance mechanism, which makes the regulating valve responsive, precise in control, and allows for a large pressure difference.

【3】 Performance indicators of self operated flow regulating valve:

【4】 Allow pressure difference

【5】 Main technical parameters of control valve:

【6】 Main technical parameters of the actuator:

【7】 Dimensions and weight of self operated flow regulating valve:

【control valve】It consists of an electric or pneumatic actuator and a regulating valve. Regulating valves are divided into electric regulating valves, pneumatic regulating valves, and hydraulic regulating valves (self operated regulating valves). Regulating valves are used to regulate the flow rate, pressure, and liquid level of the medium. According to the signal from the regulating position, the opening of the valve is automatically controlled to achieve the regulation of medium flow rate, pressure, and liquid level. Regulating valves are usually divided into two types: straight through single seat regulating valves and straight through double seat regulating valves. The latter has the characteristics of large flow capacity, small imbalance, and stable operation, so it is usually particularly suitable for situations with high flow rate, high pressure drop, and low leakage. The flow capacity Cv is one of the main parameters for selecting a regulating valve. The definition of the flow capacity of a regulating valve is: when the regulating valve is fully opened, the pressure difference between the two ends of the valve is 0.1MPa, and the fluid density is 1g/cm3, the flow rate per hour of the regulating valve is called the flow capacity, also known as the flow coefficient, expressed in Cv, with the unit of t/h. The Cv value of the liquid is calculated according to the following formula.

Quanli Ordering Notice: (National Standard)
1、 A: Product name, model, nominal diameter B: Medium and temperature, pressure range C: Are there any accessories, delivery time, special requirements, etc. for us to correctly select for you.
2、 If the valve model of our company has already been selected by the design unit, please place an order directly with our sales center based on the valve parameters.
3、 When the situation you are using is very important or the environment is complex, please provide design drawings and detailed parameters, and our engineers and experts will focus on reviewing and analyzing for you. We can provide you with professional solutions, including design, customization, complete sets, operation, and service. We have always been committed to being a leader in the valve industry, providing you with the latest valve knowledge, the best service, and the best technical consultants. Thank you for visiting our website【www.quanlivalve.com】If you have any questions, you can call us and we will do our best to provide you with high-quality service. Our factory specializes in providingball valve、butterfly valve、gate valve、globe valve、check valve、pressure reducing valve、safety valve、Marine valves、Oilfield valves、Water control valveWaiting for various types of valves.