Electric low temperature 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

Electric low temperature regulating valve

  • [Valve model]: DWZDLP、DWZDLM
  • [Diameter specification]: DN25～DN250mm
  • [Structure]: Through cast ball valve
  • [Valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [Nominal pressure]: PN16、PN40、PN64
  • [Applicable temperature]: -40~- 196 ℃, ultra-low temperature up to - 250 ℃
  • [Application Scope]: Low temperature gas and fluid (such as liquid oxygen, liquid argon, etc.)
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  • Electric low temperature regulating valve

Product features

The electronic electric low temperature regulating valve is composed of 3810 series electric actuators and extension rod low temperature valve body. The valve body is of precision structure, with good low temperature resistance, and is suitable for low temperature and cryogenic occasions where the medium temperature is - 40 ℃~- 196 ℃. The function of the long neck upper valve cover of the electric low-temperature control valve is to make the packing work at normal temperature and reduce the transmission of external heat energy. In order to reduce the transmission, the long neck is generally of thin wall structure, which has good low-temperature resistance. It is especially used to accurately control the process parameters of low-temperature gases and fluids (such as liquid oxygen, liquid argon, etc.) to maintain at a given value.
Structure of pneumatic cryogenic control valve
Features of electric low temperature regulating valve:
 
The production of electric low temperature control valve has developed strict manufacturing process and special equipment to strictly control the quality of parts processing. After special low temperature treatment, the rough machined parts are placed in the cooling medium for several hours (2-6 hours) to release stress, ensure the low temperature performance of materials, and ensure the finish machining size, so as to prevent the valve from being exposed to, For leakage caused by deformation due to temperature change, the assembly of the valve is different from that of ordinary valves. The parts need to be cleaned strictly to remove any oil stain to ensure the service performance.

technical parameter

valve body
Form Straight through single seat cast ball valve    
Nominal diameter 25、32、40、50、65、80、100、1 25、150、200、250mm     
Nominal pressure PN16、40、64bar     
Flange standard JB/T79.1-94, 79.2-94, etc    
Materials Cast steel, stainless steel, etc    
Upper valve cover Low temperature type: - 60 -- 196 ℃ Ultra low temperature type - 250 ℃    
Valve cover type Bolt compression type    
Filler V-type polytetrafluoroethylene filler, asbestos filler containing impregnated polytetracyanoethylene, asbestos textile filler, graphite filler    
 
Inner valve assembly
Valve core type Single seat, sleeve type    
Flow characteristics Equal percentage characteristic and linear characteristic    
Materials Stainless steel, stainless steel stackelite alloy, titanium and corrosion-resistant platform metal, etc.      

Operating principle of electric low temperature regulating valve:  
The electric low temperature regulating valve contains feeding function, which receives the unified 4-20mA or 1-5V · DC standard signal, converts the current signal into the corresponding linear displacement, automatically controls the opening of the regulating valve, and achieves continuous regulation of the pressure, flow, temperature, liquid level and other process parameters of the fluid in the pipeline.
Electric low-temperature control valve actuator:
Actuator
Type 381 LSA-08  381 LSA-20  381 LSB-30  381 LSB-50  381 LSC-65  381 LSC-99  381 LSC-160     
Piston diameter 381 LXA-08  381 LXA-20  381 LXB-30  381 LXB-50  381 LXC-65  381 LXC-99  381 LXC-160    
Output force push (N) 800  2000  3000  5000  6500  10000  16000     
Maximum stroke L (mm) 30  60  100     
Working speed (mm/s) 4.2  2.1  3.5  1.7  2.8  2.0  1.0     
Main technical parameters Power voltage: 220W50Hz Input signal: 4-20mA or 1-5V.DC Output signal: 4-20mA. DC    
Protection grade: equivalent to IP55 Flameproof mark: Exd | | BT4 Manual function: handle    
Ambient temperature: - 25+70 ℃ Ambient humidity: ≤ 95%         

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.