Concentric Wafer Type Butterfly Valve

LYV® is an established China quality Concentric Wafer Type Butterfly Valve manufacturer. This is a Universal Concentric Butterfly Valve that complies with international mainstream design standards. The Industrial Concentric Wafer Type Butterfly Valve adopts a classic valve stem and butterfly plate coaxial structure, combined with high-performance rubber valve seats, achieving reliable bidirectional sealing. This Flanged Concentric Butterfly Valve, with its compact structure, rapid opening and closing, easy maintenance, and high cost-effectiveness, has become an ideal choice for flow control and shut-off in water treatment, HVAC, and general industrial pipeline systems.

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Product Introduction

The design of the LYV® Concentric Wafer Type Butterfly Valve is focused on providing a reliable and economical solution for pipeline control. Its core lies in the proven and robust "concentric" structure that has been verified by the market. Through the close cooperation between the butterfly plate and the high-sealing-performance rubber valve seat, this High Performance Concentric Wafer Type Butterfly Valve achieves effective two-way cutoff. At the same time, the valve operates quickly, is easy to operate, and is simple and reliable in operation.

As an Efficient Concentric Wafer Type Butterfly Valve, the thickness of the butterfly plate has been optimally designed. When fully open, it has minimal resistance to the fluid, effectively reducing system pressure loss and improving transportation efficiency. Additionally, we offer various Rubber Seat Concentric Butterfly Valve made of materials and rubber valve seats like EPDM and NBR, which can be configured according to different medium characteristics, thereby generating Corrosion Resistant Flange Concentric Butterfly Valve suitable for mild corrosive environments, thus expanding the application scope of the product.

As a widely Universal Concentric Butterfly Valve, it ensures performance as well as highly competitive procurement and usage costs.

Specifications

Size Range:

NPS 2”-48”; DN50-DN1200

Nominal Pressure:

150LB-600LB; PN6-PN64

Temperature Range:

-69℃~825℃（depends on design and material）

End Connections:

Flange; Butt-weld; Wafer; Lug-wafer

Body Materials:

ASTM A216 WCB/WCC; ASTM A352 LCB/LCC; ASTM A351 CF8/CF8M/CF3/CF3M; ASTM A890 4A/5A/6A;

Disc Materials:

ASTM A216 WCB/WCC; ASTM A352 LCB/LCC; ASTM A351 CF8/CF8M/CF3/CF3M; ASTM A890 4A/5A/6A;

Sealing Material:

VITON/NBR/EPDM

Seat Materials:

Integral; 304/316/STL 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

Features

■ Concentric Flange Design - Classic structure, reliable bidirectional sealing performance. The Concentric Wafer Type Butterfly Valve body comes with a flange, ensuring stable installation and facilitating pipe connection.

■ The valve can be fully opened or closed by rotating 90°. The operating torque is small, and it can be equipped with various driving methods such as manual, pneumatic or electric.

■ The valve seat is made of high-quality rubber (such as EPDM, NBR), providing good sealing performance and easy replacement after wear.

■ The flow resistance is low and the pressure loss is low when fully open, helping to save system operating energy consumption.

What's the typical application scenarios of Concentric Wafer Type Butterfly Valve?

This Concentric Wafer Type Butterfly Valve, due to its versatility and reliability, is widely used in the following fields:

1. Municipal and building water supply and drainage: Used in water treatment plants, pumping stations, building water supply and fire protection systems for controlling pipeline openings and regulating flow.

2. HVAC: Cooled water, hot water and cooling water circulation systems within buildings.

3. General industrial services: Cooling water, low-pressure air and non-strongly corrosive process pipelines in industries such as power, food, and light industry.

4. Wastewater treatment: Suitable for conveying pipelines for medium water and sewage, etc.

Manufacturing Standards

The entire design and manufacturing process of the Concentric Wafer Type Butterfly Valve strictly follows international general standards, ensuring the interchangeability, safety and reliability of the product. The main standards it complies with include:

●Product design standards: API 609 (for butterfly valves), ASME B16.34 (for valve housings).

●Flange connection standard: ASME B16.5, EN 1092, etc., ensuring smooth connection with domestic and foreign pipelines.

●Structural dimension standard: ASME B16.10, ensuring the standardization of installation dimensions.

●Material standards: The materials of key components comply with relevant material specifications such as ASTM.

●Pressure test: Before leaving the factory, the shell strength test and sealing performance test are strictly conducted in accordance with relevant standards.