Pneumatic flange stop 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 flange stop valve

  • [Valve model]: J641H，J641Y，J641W
  • [Diameter specification]: DN50～DN300
  • [Structure]: Straight through
  • [Valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [Nominal pressure]: PN16-PN160
  • [Applicable temperature]: -29℃-550℃
  • [Application Scope]: Sewage, environmental protection, petroleum, chemical industry, power industry, etc
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  • Pneumatic flange stop valve

Product features

Pneumatic flange stop valve J641H-16C is mainly composed of flange stop valve and pneumatic actuator, pneumatic control element, signal switch, (can be equipped with hand wheel mechanism) and other related parts. It is an automatic control equipment driven by compressed air. The air source enters the pneumatic actuator to drive the cylinder, and connects the valve stem, valve core and valve disc for lifting movement. The sealing surface between the valve body (disc) and the valve seat of the pneumatic flange stop valve is sealed with a conical surface, which has small closing force, erosion resistance and reliable sealing. The valve seat can be a replaceable valve seat, which can be matched with the sealing surface material of the closing element in any combination to meet the working condition requirements and extend the service life.
Structure Diagram of Pneumatic Flange Stop Valve
Structure Diagram of Pneumatic Flange Stop Valve
Pneumatic stop valve actuator:
 
The flange pneumatic cast steel stop valve pneumatic actuator is generally pneumatic spring piston type and pneumatic cylinder piston type. The former is single acting spring return type, and the latter is double acting air close air open type. The pneumatic flange stop valve adopts the self sealing working principle. The medium enters the valve chamber from above the valve disc. Under the medium pressure, the stop valve has a small closing force and a large opening force. The diameter of the valve stem can correspondingly reduce the impact force of the fluid. At the same time, under the medium pressure, this type of valve is also tight. Pneumatic stop valves are generally fully open and closed, and throttling and regulating are not recommended.

technical parameter

Nominal diameter DN50～DN300
Nominal pressure PN1.6、2.5、4.0、6.4MPa
control mode Pneumatic control (air driven)
Connection type Flange type
Gland type Bolt compression type
Flange standard national standard
working temperature -29℃-550℃
Scope of use Water, oil, steam and other media

Principle of pneumatic flange stop valve:
 
The pneumatic stop valve uses compressed air to push multiple groups of combined pneumatic pistons in the actuator to move, transfer force to the beam and the inner curve track, and drive the hollow spindle to rotate. The compressed air disc is sent to each cylinder, and the inlet and outlet positions are changed to change the rotation direction of the spindle. The number of cylinder combinations can be adjusted according to the requirements of the rotating torque required by the load stop valve, Drive the load stop valve to work.

Design standard of pneumatic flange stop valve:
Design and manufacturing GB/T12235
Structure length GB/T12221
Flange size JB/T79 

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.