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Self operated front pressure regulating valve

  • [valve model]: ZZYP-16K
  • [diameter specification]: DN15~DN250mm
  • [structural form]: Cast through valve
  • [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]: Liquid, gas and vapor media
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  •  Self operated front pressure regulating valve

Product overview

Zzyp-16k self operated pressure regulating valve in front of the valve refers to the automatic control of pressure relief and pressure stabilization (used for pressure regulation in front of the valve), which can also be commonly called back pressure valve. It mainly adjusts the opening of the valve core by sensing the change of the pressure in front of the valve, so as to control the pressure in front of the valve at the set point. The self operated pre valve pressure regulating valve is composed of control valve, actuator and a set pressure spring. It is suitable for non corrosive liquid, gas and steam. It plays the role of pre valve pressure control in the system pipeline. When the pressure in front of the valve increases, the control valve opens.
 Structure of self operated front pressure regulating valve
Features of self operated front pressure regulating valve:
 
The biggest feature of the self operated pressure regulating valve is that it can work in the place without electricity and gas. The pressure setting value can be adjusted at will during the operation. It can directly use the energy of the regulated medium to operate the regulating mechanism, so as to realize automatic control. It has the advantages of sensitive action, good sealing and small wave power of pressure set point!

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    
Valve body material Cast steel, cast stainless steel    
Valve core material Hard seal: stainless steel    
Soft seal: stainless steel inlaid rubber ring    
Pressure balance Balance bellows (DN 150-25), stainless steel    

Working principle of self operated front pressure regulating valve:  
The self operated pressure regulating valve is used to control the pressure in front of the valve. The action mode of the valve is the pressure opening type. The medium flows into the valve body from the arrow direction. After cooling by the condenser (the medium is used when the medium is steam), it is introduced into the actuator to act on the diaphragm, which makes the valve core generate corresponding displacement, so as to achieve the purpose of pressure relief and pressure stabilization. If the pressure in front of the valve increases, the force acting on the diaphragm will increase. The compression spring will drive the valve core to increase the opening degree of the valve until the pressure in front of the valve drops to the set value. Similarly, if the front force of the valve decreases, the force acting on the diaphragm decreases, and the reaction force of the spring will drive the spool to reduce the valve opening until the pressure behind the valve rises to the set value.
Temperature range of pressure regulating valve in front of self operated valve:
Allowable operating temperature
Nominal diameter   15-125mm  150-250mm 
Sealing type Hard seal ≤150℃  ≤140℃ 
Cooling tank ≤ 200 ℃ Cooling tank and lengthening ≤ 200 ℃
Cooling tank and heat dissipation ≤ 200 ℃ Cooling tank and lengthening ≤ 200 ℃
Soft seal ≤150℃ 
 
Structural composition
10  11  12 
Valve body Valve seat Valve shaft Valve cover Membranous cap Diaphragm Spring Adjusting nut Pressure pipe Bellows Balance diaphragm Filling valve

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 (or product model) of the valve you selected, the required order quantity, packing requirements, delivery time, your company name, location and contact information of your company to 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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Shanghai Dongfeng pump valve factory all rights reserved sales hotline: 130-5233-3444 HTML XML Address: 459 guchen Road, Baoshan District, Shanghai, Dongfeng Farm, Chongming District, Shanghai Hu ICP Bei 17014291-6