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Three Eccentric Hard Seal Welded Butterfly Valve
  • Three Eccentric Hard Seal Welded Butterfly ValveThree Eccentric Hard Seal Welded Butterfly Valve

Three Eccentric Hard Seal Welded Butterfly Valve

Three eccentric hard seal welded butterfly valve is a kind of high-quality valve produced and manufactured by Waits. We have a complete production line and can provide competitive prices. The three eccentric hard seal welded butterfly valve we produce is well used in urban heating, gas transmission, steam pipelines and large-scale water conservancy projects.

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Product Description

Three eccentric hard seal welded butterfly valve is composed of valve body, butterfly plate, sealing ring, transmission mechanism and other main parts. Its structure adopts two-dimensional or three-dimensional eccentric principle design, and adopts new processing technology of elastic seal or hard and soft multi-layer seal compatibility, so that the butterfly valve can reduce torque during operation, save labor and energy. At the same time, it will not affect the overall corrosion resistance, high temperature resistance and wear resistance of the butterfly valve.
This butterfly valve has received a lot of good recognition in many industrial fields. As a large valve manufacturer, we know clearly that preferential valve prices are inseparable from a complete upstream and downstream supply chain system and excellent processing equipment. We attach great importance to this. We will increase investment in it every year so that Waits valves can always maintain reliable quality and preferential prices.


Implementation Standards

Design Standard API 609, EN 593, GOST
Flange standards ASME B16.25 (BW)
End Connection RF, BW, RTJ, etc.
Inspection & Test API 598, EN 12266-1, GOST
Face to Face API 609, EN 558, ASME B16.10, GOST
Pressure and temperature levels ASME B16.34
Low leakage standards ISO 15848-1, API 622
Anti-corrosion design NACE MR 0103, NACE MR 0175


Application

Size 3"-120", DN80-DN3000
Pressure Rating Class 150-1500, PN16-PN250
Operating Temperature Soft Seat: -29~200℃, Metal Seat: -29~600℃
Operator Lever, Gear, Electric, Pneumatic, etc.


Main parts materials

Body Material Carbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel, Monel, Al Bronze, etc.
Valve plate A216 WCB, A217 WC6, WC9, A351 CF3, CF8, CF3M, CF8M, A995 4A, 5A, A352 LCB, LCC, LC2, Monel...
Valve seat 13Cr/SS304/SS316/+Graphites+PTFE+STL
Valve stem F6A F304 F316 F51 F53 Monel K500...
Valve stem nut Copper Alloy
Packing Flexible graphite, graphite asbestos packing, polytetrafluoroethylene...


Performance Features

1. Unique and lightweight structure, flexible operation, labor-saving and convenient;
2. Reliable sealing, can meet various standards;
3. Good flow characteristics and adjustable function;
4. Three eccentric hard seal welded butterfly valve adopts eccentric principle, which makes the sealing surface almost zero wear and extends the service life;
5. It can be used for different media, including water, steam, oil, air and gas, etc.;
6. It is suitable for pipelines with various working conditions such as different temperatures, grades, corrosion, etc.;
7. The valve body and valve seat are connected components, and the surface layer of the valve seat seal is welded with heat-resistant and corrosion-resistant alloy materials;
8. Three eccentricities: the center line of the shaft deviates from the center line of the sealing surface, the center line of the shaft deviates slightly from the center line of the pipeline, and the center line of the valve body sealing surface (oblique cone) forms an angle of angular position with the center line of the pipeline;
9. The multi-layer sealing ring is fixed on the valve plate, which is resistant to high temperature, easy to operate, and has no friction when opening and closing. When closing, the torque of the transmission mechanism increases to compensate for the seal, which improves the three eccentric hard seal welded butterfly The sealing performance and durability of the valve;
10. The multi-layer sealing ring adopts soft and hard laminated metal sheets, which has the dual advantages of metal hard sealing and soft sealing.

Three Eccentric Hard Seal Welded Butterfly Valve


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