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Your current location: Shanghai Dongfeng pump valve factory > Product Center > Regulating valve > self-actuated regulator >

Self operated rear pressure regulating valve

  • [valve model]: ZZYP-16B
  • [diameter specification]: DN15~DN250mm
  • [structural form]: Through casting 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]: Gas, liquid and vapor media
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  •  Self operated rear pressure regulating valve

Product overview

Zzyp-16b self operated pressure regulating valve is mainly used to control the pressure behind the valve, which can also be called pressure reducing valve. It can adjust the opening of the valve core by sensing the change of the pressure behind the valve, so as to realize the pressure behind the control valve at the set point. The self operated pressure regulating valve can work in the place without electricity and gas, and at the same time, it can save energy. The pressure setting value can be adjusted at will in the operation. It is widely used in the automatic control of gas, liquid and steam medium pressure reduction and pressure stabilization (for pressure regulation behind the valve).
 Structure of pressure regulating valve behind self operated valve
Features of pressure regulating valve behind self operated valve:
 
Generally speaking, the pressure behind the control valve is the pressure behind the control valve. It is composed of the control valve, actuator and a set pressure spring. It is suitable for non corrosive liquid, gas and steam. It plays the role of post valve pressure control in the system pipeline. When the pressure behind the valve rises, the control valve is closed.

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, 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 pressure regulating valve behind self operated valve:  
The self operated pressure regulating valve is used to control the pressure behind the valve. The action mode of the pressure regulating valve is pressure closed. The medium flows into the valve body from the arrow direction and is throttled by the valve core and valve seat. After cooling by the condenser (the medium is used when the medium is steam), it is introduced into the actuator to act on the membrane, so that the valve core will have corresponding displacement, so as to achieve the purpose of pressure reduction and pressure stabilization. If the pressure behind the valve increases, the force acting on the diaphragm increases, and the spring compresses to drive the spool to reduce the valve opening until the pressure behind the valve drops to the set value. Similarly, if the pressure behind the valve decreases, the force acting on the diaphragm decreases, and the reaction force of the spring drives the spool to increase the opening of the valve until the pressure behind the valve rises to the set value.
Temperature range of pressure regulating valve behind 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 "valve selection list" and "valve model selection" list, we will provide customers with technical guidance.

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、 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 product type and delivery time, the delivery period is 30 days. In order to ensure that the goods you ordered are in place in time, please order as early as possible.
6、 The company will deliver the goods to the branch offices of our company and deliver the goods according to the needs of our customers. After the product acceptance, our company will provide after-sales service.
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