Product

Lug Butterfly Valves,high performance

Short Description:

Casting butterly valves

1- Casting Carbon Steel,Stainless Steel,Duplex,Special Materials

2- Lug Type,

3- Metal seated and Soft Seated

4- 150Lb & 900Lb

5- 2”~24”

Lug type butterfly valves are a subtype of butterfly valves that are designed to be mounted using mating flange bolts. These bolts connect the valve to the pipeline flange, enabling it to isolate and regulate flow in a wide range of applications. They are typically installed in pipelines that require frequent maintenance or inspection, as the valve can be easily removed without disrupting the pipeline.

Lug type butterfly valves are often used in marine, oil and gas, and industrial applications. Their robust design makes them ideal for high-pressure and high-temperature systems, where tight shut-off is required. The valves are designed with a groove around the valve body, which accommodates the mating flange bolts. This design enables the valve to be bolted directly to the pipeline, so it can be quickly removed for maintenance or replacement.

The primary advantage of lug type butterfly valves is their ability to provide bi-directional sealing, making them ideal for applications where flow direction may change. The valve is operated using a quarter-turn motion, either by a lever, gear operator, or actuator. The valve disk is positioned at right angles to the flow when closed and rotated parallel to the flow when fully open, allowing for maximum flow capacity.

Lug type butterfly valves are available in a range of materials, including cast iron, ductile iron, carbon steel, stainless steel, and plastic. The valve disk can be made of metal, PTFE, or rubber, depending on the media being handled and the temperature and pressure requirements of the system.

In conclusion, lug type butterfly valves are a reliable and cost-effective solution for regulating and isolating flow in a variety of applications. Their unique design enables them to be quickly and easily installed, removed, and serviced, making them ideal for industries that require frequent maintenance or inspection. The choice of material and configuration should be based on the specific application requirements to ensure optimal performance, longevity, and safety.


Product Detail

Product Tags

Product Description

Product description

Triple-eccentric,Double-eccentric,Centreline butterfly valve

Model

Lug type

Nominal diameter

NPS 2”~24”(DN50~DN600)

Operating temperature

-196℃~593℃

Nominal pressure

CLASS 150~900 (PN20~PN150)

Material

A216 WCB、WCC; A217 WC6、WC9、C5、C12、C12A、CA15; A351 CF8、CF8M、CF3、CF3M、CF8C、CN3MN、CK3MCUN、CN7M; A352 LCB、LCC;A494 CW-6MC、CU5MCuC、M35-1;A890 4A(CD3MN)、5A(CE3MN)、6A(CD3MWCuN); ASME B 148 C95800、C95500

Design standard

API 609、ASME B16.34

Structural length

ASME B16.10、GB/T 12221

Connecting end

ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113

Test standard

API 598、ISO 5208、GB/T 26480、GB/T 13927

Operation method

Handle, gearbox, electric actuator, pneumatic actuator

Application fields

Metal seated type typical application is Petrochemical plant,refinery,offshore platform,power plant,LNG,steel mills

Other remarks1

Compact structure, easy installation and disassembly, repair friendly and light weight

Other remarks2

It has a certain adjustment capability, and can be used as a control valve.

Other remarks3

With the triple-eccentric structural design, the sealing face is separated as soon as opening, so the mechanical wearing and friction between two sealing faces is eliminated during the opening and closing of butterfly plate, the operation torque is lowered, and the service life is longer.

Other remarks4

Good sealing performance of zero leakage.

Other remarks5

Wide range of application - triple-eccentric metallic sealing butterfly valves have a wide range of temperature, pressure and diameter.

Triple offset frictionless design

1st offset-shaft rotation center is offset from the centerline of valve seat,provide a completed sealing contact between discand seat

2nd offset-shaft totation centre is offset from centerline of valve body,greatly reduce the friction between disc and seat during valve closing and opening

3rd offset-seat cone center is offset from the valve centreline,completely eliminate the mechanical between disc and seat,it is a torque seated,process pressureaided frictionless seal valve,ideally suitable for metal seated valves on high temperature,high pressure and firesafe application


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