• Eccentric WCB Butterfly Valve With Metal Sealing System 1
Eccentric WCB Butterfly Valve With Metal Sealing

Eccentric WCB Butterfly Valve With Metal Sealing

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
1 pc
Supply Capability:
200 pc/month

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Eccentric WCB Butterfly Valve With Metal Sealing 



The Butterfly Valve Standard

Designed: API609, ASME B 16.34, AWWA C 504, BS EN593

Face to Face: API 609, AWWAC504, BS2080, and ISO5752

Flange End: ASME B 16.5, ASME B 16.47, BS EN1092, ISO7005

Inspection Test: API 598, BS EN 12266, ISO 528

Materials Choose

Body Materials: WCB/WCC/LCB/QT450-10/QT500-7/CF8M/CF3M

Disc Materials: WCB/WCC/LCB/QT450-10/QT500-7/CF8M/CF3M

Seat Materials:304/316/Graphite/Asbetos/PTFE

Specifications

Pressure: PN10/PN16/PN25/CL150/CL300

Size: DN40---DN3200

Drive Mode: Manual/Worm gear/Electric/Pneumatic

Field of Application: Electric /Hydraulic/Municipal Engineering etc; Water/Sea water/Gas etc.

 

Shipping Time 

Delivery: within 15-30days after receipt of at sight L/C or 30% as advance payment by T/T

Packing 

Butterfly Valve Packing: Seaworthy packing:

1. Single Butterfly Valve is packed with foam plastic bag.

2. Put sponge in each floor

3. Electric or pneumatic actors will Individual packaging it with wood box.

4. Export Wooden Packing

5. We can pack according to specific customer requests.

6. Customers’ logos are available on package.

7. Design and manufacturing the wood box to save the sea cost if needed .

 Delivery: within 15-30days after receipt of at sight L/C or 30% as advance payment by T/T

 

Butterfly Valve Packing: Seaworthy packing:

1. Single Butterfly Valve is packed with foam plastic bag.

2. Put sponge in each floor

3. Electric or pneumatic actors will Individual packaging it with wood box.

4. Export Wooden Packing

5. We can pack according to specific customer requests.

6. Customers’ logos are available on package.

7. Design and manufacturing the wood box to save the sea cost if needed .

Q:Butterfly valve switch direction respectively?
First, if the butterfly valve has been installed on the pipe, you can first see the mark on the handwheel. Second, there is a switch indicator on the general worm gear.
Q:What's the difference between turbine butterfly valve and manual butterfly valve?
Butterfly (Manual butterfly) butterfly plate installed in the direction of the diameter of the pipe. In the butterfly valve body cylindrical channel, the disc shaped disc rotates around the axis. The angle of rotation is between 0 and -90 degrees. When rotating to 90 degrees, the valve is fully open.Butterfly valve structure is simple, small size, light weight, only by a few parts. The utility model can be rapidly opened and closed only by rotating 90 DEG, the operation is simple, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the butterfly plate thickness is the only resistance when the medium passes through the valve body, so the pressure drop produced by the valve is very small, so the flow control characteristic is better. Butterfly valve has an elastic seal and metal seal, two types of seals. Resilient sealing valve. The sealing ring can be mounted on the valve body or attached to the periphery of the disc.
Q:The flow ratio of area and maximum flow area of the valve is? If it refers to the opening of the valve rotation angle? Butterfly linear closure refers to the butterfly valve at constant angular velocity close? When the change trend of flow is what? These valves problem bothering me for a long time,
Butterfly valve "opening - flow" curve in the flow of 25%-75%, that section is basically linear. That is, the opening of 40%, that flow is about 40%Butterfly valve opening degree of 0.5, should be opened 50%, that is, opening to 45 degrees;
Q:Types of butterfly valves
There are clip on butterfly valves and flanged butterfly valves,Manual, pneumatic, electric,
Q:Function of signal butterfly valve in fire sprinkler system
The signal butterfly valve is generally installed in two parts: floor level, dry pipe, flow indicator front end, trunk pipe, wet alarm valve, front end.Floor level pipe installation is a function of the signal valve, when the floor spraying system needs repair, close the valve, open the end of the floor drain, emptying the water in the spray system, maintenance; two is the sprinkler system is not allowed inside water, when the butterfly is closed, will transmit a signal to the the fire alarm system, fire alarm system receives a monitoring signal (so called signal butterfly valve), fire sprinkler system that the floor is anhydrous state, fast repair.Wet alarm valve at the front of the signal butterfly valve with the main floor of the main role of the butterfly valve, first, maintenance, and two is the prompt sprinkler system, there is a signal butterfly valve closed, should be repaired as soon as possible.
Q:What does "10" in the butterfly valve "D71X-10" mean?
Represents the nominal pressure, refers to the 10MPa pressure butterfly valve, Zhengzhou butterfly valve factory specializing in the manufacture.
Q:Water supply pipe gate valve and butterfly valve which good?
2. ball valve: ball valve with a central opening of the ball as the valve heart, the rotation of the ball control valve opening and closing. The ball valve has the advantages of simple structure, light weight compared with the cut-off valve, the sealing surface has the advantages of simple structure, easy processing, good sealing performance, convenient operation, switch quickly, but can not be used to adjust the flow, suitable for high pressure (up to 320 psig) pipeline, at present, the packing material limit, can only be used for 200 DEG C, can also be used a variety of media and the viscosity of the suspension.3. butterfly valve: butterfly valve, also known as turn over plate valve, is a simple structure of the valve. As butterfly valve should not be closely matched with the pipe wall, only applicable to regulating flow, can not be used to cut off the pipeline, often used in conveying air and flue gas pipe to regulate flow. Butterfly valve is with the stem rotation of the circular butterfly plate for headstock parts, in order to achieve the opening and closing action of the valve. Butterfly valve is mainly used with shut-off valve, can also be designed to adjust or cut off and adjust the function. At present, butterfly valves are used more and more in low pressure medium and large diameter pipelines.
Q:What are single eccentric and double eccentric in butterfly valves? What's the difference, please explain in detail?
Eccentric butterfly valve is divided into single eccentric butterfly valve, double eccentric butterfly valve, three eccentric butterfly valve, variable eccentric butterfly valve.Single eccentric butterfly valve: extrusion problems, address concentric butterfly valve and valve seat of the resulting in a single eccentric butterfly valve, the structural characteristics of the stem axis deviated from the disc center, so that the butterfly is no longer a rotary bottom plate, axial dispersion, reduce the excessive squeezing and the lower end of the seat of the butterfly board.
Q:How can one - way sealed butterfly valves and two-way sealed butterfly valves be distinguished?
One way sealing butterfly valve is the front of the butterfly valve. When it closes, it must face the direction of the medium. The medium flows only in one direction, and the arrow on the valve body indicates the direction of the flow direction of the medium. Attention should be paid to the flow direction of the medium during installation. The two-way sealing butterfly valve is that the butterfly plate can face or back the direction of the medium, and the installation needs no attention to the direction of the flow of the medium, and the valve body also has no indication of the direction of the flow direction of the medium. Two way sealing butterfly valve stem force is greater than one-way butterfly valve stem. Design, the same diameter, pressure butterfly valve, two-way sealing butterfly valve stem diameter than one-way sealing butterfly valve stem diameter.
Q:What are the uses and classifications of manually operated clip butterfly valves?
In the butterfly valve body cylindrical channel, the disc shaped butterfly plate revolves around the axis, the rotation angle is 0 degrees -90 degrees between, when rotates to 90 degrees, the valve opens the card completely. Butterfly valves are not only widely used in petroleum, gas, chemical, water treatment and other general industries, but also applied to the cooling water system of thermal power stations.

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