Self operated pressure differential combination valve - 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 pressure differential combination valve

  • [Valve model]: Self operated pressure and differential pressure combination valve
  • [Diameter specification]: DN15～DN150mm
  • [Structure]: Through cast valve
  • [Valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [Nominal pressure]: PN16、PN40
  • [Applicable temperature]: ≤150℃
  • [Application Scope]: Non corrosive liquids, gases and vapors
Consult the manufacturer Online Message
  • Self operated pressure differential combination valve

Product features

Self operated pressure and differential pressure combination valve can work in places without electricity and gas without additional energy, which is convenient and energy saving. It is mainly composed of pressure valve, differential pressure valve, two actuators and two springs with set pressure. It is suitable for non corrosive liquid, gas and steam, and pressure or differential pressure control in the system pipeline. The pressure segments have a narrow range and cross each other, with high adjustment accuracy. They work according to the principle of priority action, and cannot control two parameters at the same time.
Structure diagram of self operated pressure and differential pressure combination valve
Features of self operated pressure and differential pressure combination valve:
 
The self operated pressure and differential pressure combination valve can carry out multiple combination control through the assembly, without external control instruments. The system is simple and low cost. The pressure setting value can be set continuously during operation. The pressure balance mechanism is used to make the control valve respond sensitively and control accurately.  

technical parameter

valve body
Nominal diameter Dn15、20、25、32、40、50、65、80、100、125、150mm     
Nominal pressure PN1.6、4.0MPa     
Flange standard ANSl, JIS, DIN, GB, JB (special can be provided by users)    
Valve body material Cast steel (ZG230-450), cast stainless steel (ZGICrl18Ni9Ti, ZGICr18Ni12Mo2Ti)    
Valve core material Hard seal: stainless steel (1Cr18ni9Ti, 1Cr18Ni12MoTi)    
Soft seal: stainless steel inlaid rubber ring    
Pressure balance Stainless steel bellows (DN15-125), balance diaphragm (DN150-250)    

Operating temperature of self operated pressure and differential pressure combination valve:
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.