Double Eccentric Resilient Seated Butterfly Valve

LYV® is a leading China quality Double Eccentric Resilient Seated Butterfly Valve supplier. It's a general-purpose industrial valve with excellent performance and wide application. This Industrial Double Eccentric Resilient Seated Butterfly Valve adopts a double eccentric design of valve stem and butterfly plate, combined with high-performance elastic valve seats, achieving a balance between easy opening and closing, reliable sealing and long service life. As a High Performance Double Eccentric Offset Resilient Seated Butterfly ValveIt is an economical and efficient control choice for urban water supply, HVAC and industrial pipeline systems.

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Product Introduction

The core advantage of LYV® Double Eccentric Resilient Seated Butterfly Valve lies in its ingenious "double offset" structure, which makes it perform exceptionally well in terms of ease of operation and long-lasting sealing.This Flange Style Double offset Resilient Seated Butterfly Valve minimizes the resistance to opening and closing the valve, making it easy and effortless even when operated frequently or used on large-diameter pipelines. Meanwhile, the unique disengagement movement significantly reduces the wear of the seal, and combined with the high-performance elastic valve seat, it ensures a long-term reliable sealing effect.

Specifications

Size Range:

NPS 2” – 56”; DN150-DN1400

Nominal Pressure:

150LB; PN6-PN40

Temperature Range:

-40℃~125℃（depends on design and material）

End Connections:

Flange

Body Materials:

GGG40/GGG45; ASTM A536 Gr.60-40-18/Gr.65-45-12; ASTM A216 WCB;

Disc Materials:

GG40/GGG45; ASTM A536 Gr.60-40-18/Gr.65-45-12; ASTM A216 WCB; ASTM A351 CF8/CF8M

Sealing Material:

EPDM; VITON

Seat Materials:

Integral; 13Cr/304/316 overlayweld.

Stem Materials:

ASTM A182 F6A; ASTM A182 F304/F316/F304L/F316L; 17-4PH;

Design & Manufacture Standard:

API 609

Face-to-face Standard:

EN558-1

End Connection Standard:

ASME B16.4

Test & Inspection Standard:

API 598

Typical application scenarios

●Municipal water supply system:Widely used in municipal water supply and drainage networks, especially as an ideal choice for Water Pipe Use Flange Double Offset Resilient Seated Butterfly Valve in water pipes, it is used for water plant discharge, network distribution and regional isolation.

●Building HVAC: Applicable to the cold and hot water circulation systems, cooling towers and air conditioning units within buildings, for flow regulation and cut-off.

●General industrial processes: In industries such as power, chemical engineering, and food, it is used to treat circulating water, fire-fighting water, low-pressure air, and non-strongly corrosive media.

●Large-diameter pipeline application: The wide diameter coverage of its DN150-DN1400 Double offset Resilient Seated Butterfly Valve makes it particularly suitable for large-diameter water and gas main pipelines in various factories and infrastructure.

What's the highlight of our Double Eccentric Resilient Seated Butterfly Valve?

■ The double eccentric design reduces the opening and closing friction force by approximately two-thirds, making manual operation convenient and significantly lowering the actuator configuration cost.

■ High-quality rubber (such as EPDM, NBR) or polytetrafluoroethylene (PTFE) elastic valve seats are adopted, featuring excellent sealing performance, low friction and wear, and a long overall service life of the valve.

■ The excellent structural design ensures reliable bidirectional sealing performance under normal working pressure, with minimal restrictions on installation direction.

■ The butterfly plate is designed to be thin and slim. When fully open, it offers extremely low resistance to the flow of the medium, which helps to reduce the energy consumption of the system operation.

■ Compared with gate valves of the same diameter, it has a shorter structural length and lighter weight, saving installation space. The valve seat can usually be replaced online, making maintenance simple and convenient.