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Operated flow control valve

  • [valve model]: ZZLP
  • [diameter specification]: DN15~DN250mm
  • [structural form]: Bolt compression type
  • [valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [nominal pressure]: PN1.6、2.5、4.0MPa
  • [applicable temperature]: 0℃-200℃
  • [application scope]: Non corrosive liquid medium
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  •  Operated flow control valve

Product overview

Zzlp self operated flow control valve (flow control valve) is composed of a control valve and actuator with set flow. It is mainly used to control the flow of non corrosive liquid in the system pipeline when the controlled flow is not changed (adjusted) frequently once the controlled flow is set. The effective pressure of the flow control valve is divided into 0.02MPa and 0.05Mpa, which should be selected according to the actual situation. When selecting, the pressure difference between the front and rear of the valve should be greater than the effective pressure, which can be used for non corrosive liquid medium with the highest temperature of 200 ℃.
 Structure of self operated flow control valve
Features of self operated flow control valve:
 
It is easy to adjust the flow rate and pressure difference in a wide range. It integrates many functions of detection, control and execution into one valve, and forms an independent instrument control side system. The correct use of this valve can easily realize the flow distribution of the system, realize the dynamic balance of the system, greatly simplify the debugging work of the system, and stabilize the working state of the pump.

technical parameter

valve body
Nominal diameter Dn15、20、25、32、40、50、65、80、100、125、200、250mm     
Nominal pressure PN1.6、4.0MPa     
Flange standard ANSl, JIS, DIN, GB, JB    
Valve body material Cast steel, cast stainless steel    
Valve core material Hard seal: stainless steel    
Soft seal: stainless steel inlaid rubber ring    
Pressure balance Stainless steel bellows (DN 15-125), balance diaphragm (DN 150-250)    
Working principle of self operated flow control valve:  
The self operated flow control valve does not need additional driving energy. It is an energy-saving control device which can automatically adjust according to the set value by relying on the pressure of the regulated medium as the power source and the pressure change of the medium. It integrates the functions of detection, control and execution in one valve and forms an independent instrument control side system.
The structure of the self operated flow control valve is as follows:
Structure sketch
Current limiter Valve body Valve seat Valve shaft Valve cover Bellows Membranous cap Diaphragm Filling valve

Temperature range of self operated flow control valve:
Allowable operating temperature
Nominal diameter   15-125mm  150-250mm 
Sealing type Hard seal ≤150℃  ≤140℃ 
Cooling tank ≤ 200 ℃ Cooling tank and lengthening ≤ 200 ℃
Soft seal ≤150℃
  

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery mode, as well as the fluctuation of valve raw material price, the valve price will be greatly different. Therefore, the price of our products is not indicated on the website. Please understand.

If you select a valve product on this website, if you need to know the price or ask for relevant technical information, please contact us. We will reply immediately, and according to your requirements, we can select the right valve products for you, so that your purchasing process is easy and pleasant.

Quotation process:

1. Please fax the name of your company, the name of your company and the place of delivery, the name of your company and the place of delivery 021-36311208 Or telephone number: 021-60547555。

2. After receiving the customer's purchase list, our company will provide customers with valve quotation "price list", model selection "valve model" and technical guidance as soon as possible.

3. Specific matters to be agreed: delivery time, special requirements, etc.

Ordering instructions

1、 If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
(1) Valve body material (such as: plastic, cast steel, stainless steel...)
(2) Connection type (e.g. flange, thread, clamp...)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Supply voltage, air pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acidity or alkalinity)
2、 The company configures all kinds of driving devices according to the special requirements of customers. (electric control, pneumatic control)
3、 If the customer provides the determined valve type and model, the customer shall correctly explain the meaning and requirements of the valve model (for details, refer to the description of valve model preparation), and sign the contract under the condition that both parties understand and agree.
4、 After the customer tells the required valve model, specification, quantity and delivery time and place, 20% of the total amount of deposit or full payment shall be timely remitted to our company's account, and the rest shall be remitted before delivery, so as to arrange delivery in time.
5、 After confirming the purchase, our company carries on the production in strict accordance with the delivery date. According to the different types and quantities of orders, the product processing cycle is generally 3 to 30 days, and the specific delivery time is subject to the contract. In order to ensure that the goods you ordered are in place in time, please order as early as possible.
6、 According to the needs of customers, our company provides network distribution services, delivering goods to the branches (offices) in major cities, and providing door-to-door delivery service. After the product acceptance, our company will provide after-sales service.
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