Pneumatic diaphragm single seat 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

Pneumatic diaphragm single seat regulating valve

  • [Valve model]: ZJHP
  • [Diameter specification]: DN20～DN200mm
  • [Structure]: Single seat plunger type
  • [Valve body material]: Cast steel (WCB), stainless steel (304, 316, 316L)
  • [Nominal pressure]: PN16、PN40、PN64
  • [Applicable temperature]: -17 ℃ - 450 ℃ (see product details for details)
  • [Application Scope]: Gas, liquid, steam and other media
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  • Pneumatic diaphragm single seat regulating valve

Product features

JHP pneumatic diaphragm single seat regulating valve is especially suitable for occasions with small allowable leakage, small pressure difference before and after the valve, certain viscosity and a small amount of fiber medium. It is mainly composed of pneumatic multi spring diaphragm actuator and low flow resistance single seat valve. ZJHP pneumatic diaphragm single seat regulating valve is a top guide single seat regulating valve. It has simple structure, good sealing performance, large flow, reliable use, effective and sufficient top guide system to overcome the vibration at small opening and achieve high control effect in wide application.
Structure Diagram of Pneumatic Diaphragm Single seat Regulating Valve
Principle of pneumatic diaphragm single seat regulating valve:
 
The pneumatic diaphragm single seat regulating valve adopts a multi spring actuator, which is low in height, light in weight, and simple in equipment. It is equipped with a valve positioner to convert the current signal into a corresponding linear displacement, automatically control the opening of the regulating valve, and achieve continuous regulation of the pressure, flow, temperature, liquid level and other process parameters of the fluid in the pipeline. The flow channel is S-streamlined, with sensitive action, small pressure drop loss, large valve capacity, and accurate flow characteristics, which can be used in harsh working conditions.

technical parameter

valve body
Form Straight through single seat cast ball valve    
Nominal diameter 20、25、32、40、50、65、80、100、125、150、200mm     
Nominal pressure PN16、40、64bar     
Flange standard JB/T79.1-94, 792-94, etc    
Materials Cast steel (ZG230450), cast stainless steel (ZGICr18Ni9Ti, ZGICr18Ni12M02Ti), etc    
Upper valve cover Standard type: - 17-230 ℃ Heat dissipation type: 230-450 ℃ Low temperature type: - 60-196 ℃ Bellows sealing type: - 40-350 ℃    
Valve cover type Bolt compression type    
Filler V-type polytetrafluoroethylene filler, asbestos filler containing impregnated polytetracyanoethylene, asbestos textile filler, graphite filler    
Structural form Single seat plunger type    
 
Inner valve assembly
Valve core type Single seat plunger type valve core    
Flow characteristics Equal percentage characteristic and linear characteristic    
Materials Stainless steel, stainless steel stackelite alloy, titanium and corrosion-resistant platform metal, etc.      

Pneumatic diaphragm single seat regulating valve actuator:
Actuator
Type Multi spring diaphragm actuator    
Model ZHA/B-22  ZHA/B-23  ZHA/B-34  ZHA/B-45  ZHA/B-56     
Effective area cm2 350  350  560  900  1400     
Stroke mm 10、16  25  40  40、60  100     
Spring range KPa 20-100 (standard), 20-60, 60-100, 40-200, 80-240    
Diaphragm material NBR rubber clip nylon cloth, EPDM rubber clip nylon cloth    
Air supply pressure 140-400KPa     
Air source interface RCl/4"     
Ambient temperature -30-70℃     

Action form of pneumatic diaphragm single seat regulating valve:
Valve action form
Air close type (B) - valve position open (FO) in case of air loss; Air to open (K) - valve position closed (FC) in case of loss of air    
 
enclosure
Positioner, air filter pressure reducer, retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc    

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.