Electric eccentric hemisphere 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 eccentric hemisphere valve

  • [Valve model]: PQ940F，PQ940H
  • [Diameter specification]: DN15～DN300
  • [Structure]: Eccentric hemispherical core
  • [Valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [Nominal pressure]: PN10、PN16、PN25、PN40
  • [Applicable temperature]: -20℃～450℃
  • [Application Scope]: Containing fiber, small solid particles and slurry, viscous fluid
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  • Electric eccentric hemisphere valve

Product features

The electric eccentric hemisphere valve is a new type of ball valve with a structure similar to the three eccentric hard seal butterfly valve. Its opening and closing parts are taken from a part of the ball valve
In the process of opening and closing, there is no contact between the ball and the sealing surface of the valve seat, so there will be no friction and jamming, which reduces the wear of the seals and greatly improves the
Service life of the valve. The sealing force on the sealing surface of the electric eccentric hemisphere valve is gradually increased, that is, the ball and the valve seat are gradually increased from complete separation to contact
The specific pressure of the seal is until it is completely sealed, and vice versa, which greatly improves the sealing condition and sealing effect of traditional ball valves in the past.

Features of electric eccentric hemisphere valve:
 
1. This valve is an electric hard seal ball valve with strong wear resistance and corrosion resistance, and can be selected according to different media and working conditions
The valve seat sealing surface material can achieve different sealing effects.
2. The unique V-notch of PQ940H electric eccentric ball valve has the special function of shearing, which can remove the residual sundries in the medium when the valve is closed
Cutting, especially suitable for media containing fiber, small solid particles and slurry.
3. During the opening and closing process of the electric eccentric ball valve, the ball instantly disengages from the sealing surface of the valve seat without any contact with each other, reducing the gap between the ball and the valve seat
The friction and wear between the valves improve the service life of the valves, and have the characteristics of small torque, flexible rotation, etc.
4. When the ball valve is opened or fully closed, the sealing surface of the ball valve and the valve seat is completely isolated from the medium, and when the medium passes through, the sealing surface of the valve will not be eroded.

technical parameter

Nominal diameter DN15～DN300(MM)
Nominal pressure PN1.0、1.6、2.5、6.4MPa
Connection type Wafer type, flange connection
structural style Eccentric rotary valve
Action range 0-90 degrees
body material Carbon steel WCB, stainless steel 304, stainless steel 316316L
Leakage Q Soft seal Class VI, hard seal Class IV
Switching time five second -30 seconds - sixty Seconds (can be customized as required)
Flow characteristics Approximate equal percentage
supply voltage AC220V, AC380V, DC24V (others can be customized)
Form of action Switch type (switch two position cut-off) 、 Intelligent adjustment type (4~20mA signal control)

Principle of electric eccentric hemisphere valve:
 
 
The disc of the electric eccentric hemisphere valve is shaped like a hemisphere, and the stroke of the disc switch is 0-90 degrees. However, there is an eccentricity between the rotating center of the disc (valve shaft) and the center of the valve seat (valve body or pipeline center), so that the ball can immediately disengage from the sealing surface of the valve seat when the ball valve is opened or closed, without contact or friction, reducing wear, This structure is very similar to the sealing and movement principle of the three eccentric butterfly valve, so some people say that the eccentric hemisphere valve is not a ball valve, but rather a butterfly valve with a spherical disc.

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.