D943H Double Flange Three Eccentric Electric Butterfly Valve

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5 unit
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2000 unit/month

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Product Description:

D943H Double Flange Three Eccentric Electric Butterfly Valve



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, ASMEB 16.47, BS EN1092, ISO7005

Inspection Test: API 598, BSEN 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

SeatMaterials:304/316/Graphite/Asbetos/PTFE

Specifications

Pressure:PN10/PN16/PN25/CL150/CL300

Size: DN40---DN3200

Drive Mode: Manual/Wormgear/Electric/Pneumatic

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


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

ButterflyValve Packing: Seaworthy packing:

1. SingleButterfly Valve is packed with foam plastic bag.

2. Putsponge in each floor

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

4. ExportWooden Packing

5. We canpack according to specific customer requests.

6.Customers’ logos are available on package.

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







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Q:Three eccentric hard sealing butterfly valve, why not fit in the end of the pipe?
Louzhu asked extremely, since it is hard seal, it is bound to guarantee long-term work after zero leakage, or should be configured double eccentric soft sealing valve is more reasonable.
Q:It is different from the butterfly valve butterfly valve
How it works: the disc is driven by the stem, and if it turns 90 degrees, it can be opened and closed once. By changing the deflection angle of the plate, the flow of the medium can be controlled. The main sealing element is a sealing ring, and the material is selected according to the use and the medium.
Q:Why use special flanges for butterfly valves?
Because to use special flange butterfly valve butterfly flange diameter is just the butterfly inside diameter of DN coincides with a slot in the back, and this is the connection of the steel pipe is inserted into the slot, so as to ensure the sealing effect, but with a flange piece of ordinary cannot guarantee the effective sealing effect.Butterfly valve plate installed in the direction of the diameter of the pipe. Butterfly valve structure is simple, small size, light weight. Consists of only a few components. 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.If the butterfly valve is used as a flow control, the main thing is to correctly select the size and type of valve. Butterfly valve structure and principle, especially suitable for making large-diameter valves. There are two kinds of butterfly valves commonly used: clip type butterfly valve and flanged butterfly valve. The clip type butterfly valve is a double headed bolt connecting the valve between the two pipe flanges. The flange type butterfly valve is provided with a flange on the valve, and a bolt is used to connect the flanges at the ends of the valve to the pipe flange.
Q:What does the triplex of pneumatic butterfly valve mean?
Generally referred to as "triple parts" as if: filter pressure reducing valve, solenoid valve, with the valve position feedback switch..
Q:Butterfly valve medium flow direction of the provisions of it?
From the above example, it can be concluded that the arrow direction of the butterfly valve body refers to the direction of the pressure of the medium. Before the installation, the user must know the direction of the pressure of the valve after the valve is closed. The direction of the arrow of the free valve body is in accordance with the direction of the pressure of the medium, so that the correct use can be achieved, and the tightness of the valve body is kept in good condition.
Q:Butterfly valve model D344H and D343 difference
In fact, almost all refers to the sealed variable eccentric butterfly valve.1, D344H-10C DN4002, D343H-10C DN400Let's talk about the similarities between the 2 Butterfly models: D stands for butterfly valves, 3 represents turbine drivers, and the middle 4 represents flanged connections,10 represents the pressure of 10 kg, C represents the butterfly valve, the material is cast steel, and DN400 stands for the caliber of the valve;To say that where there are differences between the 2 models, there is a place where there are differences, second means 4 of the first models is the new type sealing valve structure is variable eccentric, second of the second models of the 3 represents the structure of the valve is three eccentric, and three eccentric seal variable eccentric type is in fact a meaning.Sealed three eccentric butterfly valve, sealed variable eccentric butterfly valve, corresponding to the central butterfly valve and sealed single eccentric butterfly valve.
Q:Classification of telescopic butterfly valve
(2) temperature butterfly valve. 120 C
Q:What is the working principle of the electric butterfly valve, and what's the difference between the butterfly valve and the butterfly valve?
Signal butterfly valve is generally can achieve full clearance of a valve opening electrical signal output, the general requirements of the electrical signal isPassive electric shock signals are mostly used in fire fighting systems, such as the need for valve position feedback;The electric butterfly valve is not necessarily the signal butterfly valve, because the electric butterfly valve does not have the requirement of the source contact.
Q:Especially butterfly valve
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:Should I connect the butterfly valve before and after the pump? Or gate valve?
Personally believe that import and export butterfly valve or gate valve can be, or other valves. One principle, easy installation and easy maintenance.As for how much pressure can be selected according to the size of the pump flange to set the general small caliber pump are 1 and 1.6 pressure general, unless you are a super high pressure multi-stage pump, generally 1 flanges fully meet the requirements of pump working pressure is generally not too high, living above the water temperature will not exceed 40 C, so you choose the space is still very large.

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