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Temperature Double Seat Control Valve

Temperature Double Seat Control Valve

ZXN series Pneumatic double seat Control Valve Characteristics: Two guide structure with Multiple springs actuator.The structure is compact、lighter weight、quick operation、large valve capacity、flow features accurate、flow characteristics accuracy、easy to dismounting.This series product have...

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Product Details

There are two plugs and two seats that operate within the valve body. In a single seated valve, the forces of the flow stream can push against the plug, requiring greater actuator force to operate the valve movement. Double seated valves use opposing forces from the two plugs to minimise the actuator force required for control movement. Balancing is the term used when the net force on the
stem is minimised in this way. These valves are not truly balanced. The result of the hydrostatic forces on the plugs may not be zero due to the geometry and dynamics. They are therefore termed semibalanced. It is important to know the combined loading due to the amount of balancing and dynamic forces when sizing the actuator. Shutoff is poor with the double seated valve and is one of the downfalls with this type of construction. Even though manufacturing tolerances may be tight, due to different forces on the plugs it is not possible for both plugs to make contact at the same time. Maintenance is increased with the added internal parts required. Also these valves tend to be quite heavy and large.
These valves are an older design that have fewer advantages compared with the inherent disadvantages. Although they can be found in older systems, they are seldom used in newer applications.


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Structure:flowing through type globe valve with double-seated.
DN:25~300mm.
PN:1.6~10.0Mpa or class 150~class 600.
Connections:flanged type.
Material:WCB,HT200 ZG230-450 ZG1Cr18Ni9Ti.ZG0Cr18Ni12Mo2Ti.

Upper Cover.


Normal Temp:-20°C~+200°C.
Heat Radiation Type:-40°C~+450°C.
Gland Connection:bolted type.
Packing:V type PTFE.FLEXIBLE GRAPHITE.S.S BELLOWS.

Valve Assembly.


Valve Core:Double guiding&double-seated plug type.
Cv Features:Linear,Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti0Cr18Ni12Mo2Ti.

Actuator.


Model: Electric actuator
Spring range:0.02~0.1/0.04~0.2Mpa.
Air Supply:0.14/0.16/0.28Mpa.
Air Supply Connector:M10*1.
Working Temp:-30~+70°C.
Valve Acting Type:air to close or air to open.
Accessories:positioner,,hand wheel.
Parameters:(with positioner.)

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Manufacturing and Supplying All Kinds of Automatic Valves
Hoyee specializes in designing, manufacturing and supplying all kinds of automatic valves. Our products cover electric valves (ball valves, butterfly valves, gate vales and more), pneumatic valves (angle seated valves, ball valves, butterfly valves and more), control valves, regulating valves and more.
 
Supported by More than 600 Employees
Currently, we have more than 150 employees, including 30 more engineers and technicians. In addition, we also have two complete original production and auto-inspection lines from Germany, digital lathes and CNC machines to guarantee the quality and safety of our products. On the further strategy, our advantages help us hold an unbeatable stand in Industry 4.0.


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Packing Details: Wooden box and plywood case, standard export  packing.
In addition that we can  design and pack as your request.
Delivery Details : Shipped in 5-15 days after payment.

 

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1. Q: Is sample order acceptable?

    A:  Yes.


2. Q: When will make delivery ? 

    A:We have stock for standard products.

    As usual, after payment, within 7 working days.


3. After-sales Service 

    1 year warranty for all kinds of products; 

    As an experienced manufacturer, you can rest assured of the quality and after-sales service. 


4. Payment 

    L/C, T/T, Western Union, Paypal, Alipay, Cash.


5. Transportation 

    Transported by DHL, UPS, EMS, Fedex, SF, by Air, by sea.

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 Mail address:Infor@hoyeevalve.com
 Website:www.hoyeevalve.com


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