D941X-10C Flange Soft Seal Butterfly Valve

D941X-10C Flange Soft Seal Butterfly Valve
Details:
Structural principle of butterfly valve
Butterfly valve (also known as flap valve) is a regulating valve with a circular valve disc or disc as the closing part. It is mainly composed of a valve body, a valve stem, a butterfly plate and a sealing ring. The valve body is cylindrical, with short axial length and built-in butterfly plate. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle between 0° and 90°. When it rotates to 90°, the valve is fully open.
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Description
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Fine Smart Electric Actuator

The fine smart electric valve actuator is equipped with a butterfly valve, and its operating life is higher than the standard of similar products. Small and lightweight, easy to disassemble and repair, and can be installed at any location.

product-519-504

 

Product Features

Shell - The shell is made of hard aluminum alloy, anodized and polyester powder coated, with strong corrosion resistance. The protection level is IP67, NEMA4 and 6, and IP68 type is available.

 

Motor - fully enclosed squirrel cage motor, small size, large torque, small inertia force, insulation grade F, built-in overheating protection switch to prevent overheating damage to the motor.

 

Handle structure - the design of the handle ensures safety, reliability, labor saving and small size. When power is off, pull the handle for manual operation. When not using it manually, place the wrench in the wrench clip for easy use.

 

Indicator--The indicator is mounted on the central axis and allows the valve position to be observed. The lens adopts a convex mirror design, which does not accumulate water and makes observation more convenient.

 

Dryer - used to control the temperature, prevent moisture condensation inside the actuator due to changes in temperature and weather, and keep internal electrical components dry.

 

Sealing - good sealing, standard product protection level is IP67, and IP68 protection level is optional.

 

Match With Butterfly Valve

product-463-491

 

Butterfly Valve Flange Types

Butterfly valve flange is called flange plate or flanged parts. It is a product that connects valves and pipes in pipelines. Butterfly valve special flanges are the same as ordinary flanges, but the inner holes are different. The special flange for butterfly valve has a small inner hole and an extra slot for pipe insertion. ​ Butterfly valve flanges can be individual or combined, such as flanges at both ends of the valve to facilitate the installation of bolts. The flange-to-flange connection between one end of the pipe and the other end, or the connection joint, refers to a foldable connection in which flanges, gaskets and bolts are connected to each other as a set of combined sealing structures. Pipe flanges refer to pipeline devices. The flange used for central piping refers to the flange of the valve. The flange has holes. Bolts tightly connect the two flanges, and the flanges are sealed with gaskets.

 

[Butterfly valve flange material] No. 20, A105, Q235A, 12Cr1MoV, 16MnR, 15CrMo, 18-8, 321, 304, 304L, 316, 316L. ​ [Sealing surface form] Flat surface (FF), raised surface (RF), convex surface (M), concave surface (F), concave and convex surface (MF), tenon surface (T), groove surface (G), tongue and groove surface (TG), ring connection surface ( RJ).

 

[According to petrochemical industry standards] Threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ), flange cover (not noted). [According to machinery industry standards] Integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanged ring plate loose flange, flange cover. ​

[According to national standards] Integral flange, threaded flange, butt welding flange, neck flat welding flange, neck socket welding flange, butt welding ring neck loose sleeve flange, plate flat welding flange, butt welding ring plate loose sleeve Flange, flat welded ring plate loose sleeve flange, flanged ring plate loose sleeve flange, flange cover. ​

 

[According to chemical industry standards] Integral flange (IF), threaded flange (Th), plate flat welding flange (PL), diameter butt welding flange (WN), neck flat welding flange (SO), socket welding flange (SW ), butt welding ring loose sleeve flange (PJ/SE), flat welding ring loose sleeve flange (PJ/RJ), lined flange cover (BL (S)), flange cover (BL).

 

Basic Knowledge Of Flange Butterfly Valve

The flange butterfly valve introduces the self-sealing design concept, in which the connection between the valve disc and the valve shaft adopts a patented pull-out pin structure. The main features of this valve are reliable sealing, bidirectional sealing, and tight connection without loosening, making the valve long-lasting. Its characteristics are as follows: ​ Two-way sealing Usually, due to its structural reasons, traditional butterfly valves cannot seal well under the working pressure in the opposite direction (not conducive to the sealing direction). Currently, there are no mandatory provisions for bidirectional sealing in relevant national standards. This is because: ​

 

1. Adopt self-sealing design concept The valve disc sealing ring is directly embedded in the valve disc with rubber in a zigzag shape, without the need for pressure rings or bolts. This avoids the uneven stress on the sealing ring caused by the use of traditional bolt pressure plate seals, causing the bolts to fall off and the sealing ring to be damaged prematurely. The problem. Under the action of the working pressure in the opposite direction, the sealing ring generates a self-sealing force, which increases the sealing specific pressure and presses the valve seat tightly. The greater the working pressure in the opposite direction, the greater the self-sealing force, thus making the sealing ring and the valve seat The combination is tight and achieves a two-way sealing effect. ​ ​

 

2. The valve disc has good rigidity and is not easily deformed. The valve disc of the butterfly valve DN300 or above has a double flat plate truss flow structure, which has small flow resistance and good rigidity. It is not easy to deform under the working pressure in the opposite direction, so that the sealing ring will not deviate from the best sealing point of the valve seat as the valve disc deforms. , thus ensuring the sealing effect of the sealing ring. ​ ​

 

3. Rubber sealing ring has long service life (1) Due to the self-sealing design concept, the small interference between the rubber ring and the stainless steel valve seat only maintains the initial seal, so the specific pressure required for sealing increases as the system pressure increases. ​ (2) In addition, there is a so-called "breathing" groove for the elasticity of the rubber to give way in the zigzag groove, so that the rubber has a certain expansion space when it is under pressure, so that elastic fatigue will not occur in long-term work, so the seal The life of the ring is greatly extended compared with traditional types.

 

 

Actual Pictures Of Connecting Valves

product-513-579

 

Product Applications

product-501-533

 

 

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