Concentric Lug Butterfly Valve

Basic Introduction

First, concentric lug butterfly valves are affordable parts for various industrial pipelines.Unlike standard flange butterfly valves, they have integrated lugs on both valve sides.Thus, users skip full flange matching to simplify all installation work on site.Besides, they work well for new pipeline build and old pipeline upgrade projects.

Structural Characteristics

Firstly, stem, disc and valve body share one central concentric line.Therefore, its compact structure lowers faults and cuts daily maintenance expense.Also, disc presses rubber rings to gain steady and equal two-way sealing results.Hence, installers ignore fluid directions to avoid unnecessary fitting mistakes.Moreover, low flow resistance fits manual, electric and pneumatic driving options.

Advantages of Lug Mounting Structure

Specifically, built-in lugs form its biggest edge over regular wafer butterfly valves.Instead of two separate flanges, workers fasten bolts through holes on valve lugs.In addition, it supports sandwiched setup or single-end blind shutoff for pipe ends.Meanwhile, this design saves fitting costs and fits limited-space pipeline locations.

Service Performance

Generally, common soft-seal types reach near-zero leakage under regular working states.However, it cannot stand extreme high temperature or pressure over 1.6 MPa limit.Still, it runs reliably within medium-low pressure and normal ambient temperature.Plus, light weight and mature casting bring obvious savings for bulk order buyers.

Practical Application Fields

Primarily, water plants and sewage stations use it for clean water and waste water control.Meanwhile, power plants, steel mills and paper mills equip it for inner circulating water lines.Besides, gas pipes, ventilation ducts and building water systems also adopt this valve.Specifically, it handles flow regulation, shutoff and isolation during equipment overhaul.

Summary

Overall, this valve owns plain structure and loose restrictions for operating conditions.Finally, flexible fitting and low cost make it top pick for common low-pressure pipelines.