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Worm gear hard seal lug butterfly valve

Worm gear hard seal lug butterfly valve

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Product parameters

The geometric design of the Tekron worm gear hard seal lug butterfly valve ensures that the sealing ring is in contact with the valve seat at the moment of final closure, without unnecessary friction and wear; The sealing ring is tightly matched with the valve seat, without the need for constraints when the valve seat is engaged with the sealing ring, ensuring complete sealing performance and low torque; Unique sealing and fire resistance design, providing one-way and two-way sealing options for customers to choose from; The packing adopts unique dust-proof design and low leakage sealing packing active load design; Complex conical sealing ring components can be replaced with wildcard characters.

Gear operated three eccentric lug butterfly valve manufacturer worm gear switch three eccentric lug butterfly valve is mainly metal sealed, which can be sealed by the valve body itself or STL alloy seal, or made into a valve seat with PTFE sealing ring. So our three eccentric lug butterfly valve has good quality and strong applicability.

Gear operated three eccentric lug butterfly valve/stainless steel 蜗轮硬密封凸耳式蝶阀(图1) worm gear three eccentric lug butterfly valve steel butterfly valve, API 609, MSS SP-67 temperature and pressure, ASME B16.34 structural length, API 609 end flange, ASME B 16.5 testing standard, API 598 fire protection standard, API-607 American standard hard seat lug butterfly valve design description Sealing structure: soft seal, multi-layer hard seal, elastic hard seal, fireproof soft seal ISO 5211 gasket connection: lug to clamp operation mode: manual, turbine, electric, pneumatic, hydraulic eccentric structure, centerline structure, single eccentric, double eccentric, triple eccentric structure

Gear operated three eccentric lug butterfly valves are more expensive than gear operated concentric lug butterfly valves. If the temperature and pressure requirements of the medium are not high, concentric butterfly valves can be used instead.

This product belongs to our butterfly valve range. For sizing, pressure rating, material and actuator selection, see our valve technical resources.

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Tekron & Trekre

Butterfly Valve FAQs

01 Which butterfly valve seat design should be used?
Common designs include resilient seats and metal seats. Resilient-seated valves are generally used for water, air and low-leakage services at moderate temperatures. Metal-seated valves are selected for higher temperature, pressure or erosive industrial media. The final choice depends on the medium, temperature, pressure and required leakage class.
02 How do wafer, flanged and lug butterfly valves differ?
Wafer valves are compact and require little installation space. Flanged valves provide a stable pipeline connection for larger sizes or higher pipe loads. Lug valves can facilitate one-sided removal and maintenance. Selection depends on the piping standard, space, size and maintenance method.
03 Should a butterfly valve use pneumatic, electric or manual actuation?
Manual or gearbox operation suits local isolation. Pneumatic actuators provide fast response for frequent operation and hazardous areas. Electric actuators support remote control and modulation. The actuator must be sized for valve size, differential pressure, torque and control signal.
04 Which operating data are required for butterfly valve selection?
Provide the medium, design temperature, design pressure, nominal size, connection standard, body and seat materials, leakage class, flow direction, operating frequency, actuation method and any enclosure or explosion-protection requirements.