Market Trend
In recent years, most industrial projects have gradually abandoned traditional wafer‑type butterfly valves for pump outlets, pipe ends and long‑term vibrating pipeline sections, and turned to lug‑type butterfly valves with better adaptability; the two types of valves share relatively similar appearances, yet they show huge gaps in overall performance during actual operation.
Comparison with Wafer‑type Butterfly Valve
First, wafer‑type butterfly valves adopt a full‑through hole structure, and their fixation relies entirely on clamping force from flanges at both pipe ends. Vibration generated by pipeline operation often causes loose bolts and valve displacement, and these valves cannot achieve independent fixation or fit application scenarios for pipe dead‑ends.
second, lug‑type butterfly valves apply a split threaded fixing structure, and their valve bodies come with load‑bearing lug seats that grant the equipment stronger anti‑vibration and tensile capacity as well as higher overall mounting stability.
third, these valves allow more convenient maintenance, operators can disassemble pipeline components on one single side without removing the whole valve unit, which greatly cuts down the overall difficulty of routine pipeline operation and maintenance.
Cost‑benefit Analysis
Lug‑type butterfly valves feature relatively higher costs and heavier self‑weight, nevertheless, their advantages in stability and service‑friendliness can fully offset such cost drawbacks for key industrial auxiliary pipelines.
Typical Application
Currently, engineering projects covering power, chemical, HVAC and fire‑protection fields have designated lug‑type butterfly valves as the standard option for large‑bore vibrating pipelines, making them preferred equipment for industrial pipeline construction.
