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

Self operated regulating valve with director

  • [Valve model]: ZZYVP
  • [Diameter specification]: DN15～DN250mm
  • [Structure]: Straight through
  • [Valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [Nominal pressure]: PN1.6、2.5、4.0MPa
  • [Applicable temperature]: -30°～ 350°
  • [Application Scope]: Non corrosive liquids, gases and vapors
Consult the manufacturer Online Message
  • Self operated regulating valve with director

Product features

ZZYVP self operated pressure regulating valve with director is mainly composed of control valve, actuator and a set pressure director. In brief, in general, the control accuracy of direct acting self operated valve is not high, and the purpose of the second director is to increase the control accuracy. The valve does not need additional energy. It uses the energy of the regulated medium (gas) itself as the power source and introduces the detection actuator of the director to control the position of the valve core of the pressure regulating valve, change the medium flow through the valve, and keep the pressure at the rear end (type B) or front end (type K) of the valve at a constant value.
Structure of self operated pressure regulating valve with director
 
Features of self operated pressure regulating valve with director:
 
The pressure setting value of the operating self operated pressure regulating valve with a director can be realized on the director, and can be adjusted at will during operation. The control accuracy is about twice as high as that of the general direct operating self operated valve, which is suitable for occasions with high control accuracy requirements; The detection and actuating elements are made of high temperature resistant materials, and can also be used in high temperature (200 ℃) steam occasions without condenser.

technical parameter

technical parameter
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 pressure regulating valve with director:
The pilot operated self operated pressure regulating valve, when the pressure of the regulated medium rises, the pressure acting under the main valve diaphragm is greater than the pressure above, and the valve core moves upward to reduce the flow section, so that the pressure behind the valve drops slightly; On the contrary, when the pressure of the regulated medium decreases, the pressure acting on the diaphragm of the director decreases.
Temperature range of self operated pressure regulating valve with director:
Allowable operating temperature
Nominal diameter   15-125mm  150-250mm 
Sealing type Hard seal ≤150℃  ≤140℃ 
Cooling tank ≤ 200 ℃ Cooling tank and extension ≤ 200 ℃
Cooling tank and heat dissipation ≤ 350 ℃ Cooling tank and extension ≤ 350 ℃
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.