Self operated flow regulating valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Operated flow control valve

  • [Valve model]: ZZLP
  • [Diameter specification]: DN15～DN250mm
  • [Structure]: 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 features

ZZLP self operated flow regulating valve (flow control valve) is composed of a control valve with a set flow and an actuator. It is mainly applicable to the flow control of non corrosive liquid in the system pipeline when the controlled flow is not changed (adjusted) frequently once it is set. The effective pressure of flow control valve is divided into 0.02MPa and 0.05MPa, which shall be selected according to the actual situation. When selecting, the pressure difference between the front and back of the valve shall be greater than the effective pressure, which can be used for non corrosive liquid media with a maximum temperature of 200 ℃.
Structure of self operated flow regulating valve
Features of self operated flow regulating valve:
 
The pressure balance mechanism is adopted in the self operated flow regulating valve, which makes the regulating valve responsive, accurate in control, large in allowable differential pressure, adjustable in set point and wide in range, and convenient for users to continuously adjust the flow within the set range. It integrates many functions of detection, control and execution into one valve, forming an independent instrument control side system. Correct use of this valve can facilitate the flow distribution of the system; It can realize the dynamic balance of the system; It can greatly simplify the commissioning of the system; It can 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 (special can be provided by users)    
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 (DN15-125), balance diaphragm (DN150-250)    
Operating principle of self operated flow regulating valve:  
The self operated flow regulating valve does not need external driving energy. It is an energy-saving control device that relies on the pressure of the regulated medium itself as the power source and its medium pressure change, and automatically adjusts according to the set value. It integrates many functions such as detection, control and execution into one valve, forming an independent instrument control side system.
Structure of self operated flow regulating valve:
Structure diagram
1  2  3  4  5  6  7  8  9 
Current limiter Valve body Valve seat Valve spindle Valve cover Bellows Membranous operculum Diaphragm Charging valve

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

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery method, and the fluctuation of the price of valve raw materials, the price of valves will have a big difference immediately, so our products have not been marked with prices on the website, please understand.

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

Quotation process:

1. Please fax the name (or product model) of the valve you selected, the required order quantity, packaging requirements, delivery time, your company name, your company location and contact information to 021-36311208 Or telephone: 021-60547555。

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

3. Specific matters: delivery date, special requirements, etc.

Ordering Instructions

1、 If the customer has special requirements for the product, the following instructions must be provided in the order contract:
(1) Valve body material (such as plastic, cast steel, stainless steel...)
(2) Connection type (such as flange, thread, clamp, etc.)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Power supply voltage, air supply pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acid-base)
2、 The company configures various 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 should correctly explain the meaning and requirements of the model (see the description of valve model preparation for details), and sign the contract on the condition that both the supplier and the buyer have the same understanding.
4、 After the customer tells the required valve model, specification, quantity, delivery time and place, the deposit of 20% of the total amount or the full payment for goods shall be remitted to our company's account in time, and the rest of the payment for goods shall be remitted before shipment, so as to arrange shipment in time.
5、 After the purchase is confirmed, our company will produce in strict accordance with the delivery date. The product processing cycle is generally 3 to 30 days, depending on the type and quantity of the order, 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 try your best to order earlier.
6、 Our company provides network distribution services according to the needs of customers, delivering goods to the branches (offices) of customers in major cities, and implementing door-to-door delivery services. After the products are accepted, our company will provide after-sales service.