The Critical Role of High-Performance Butterfly Valves

A U.S. Environmental Protection Agency study shows that fugitive emissions from damaged industrial valves cause more than 300,000 tons of volatile organic compounds to leak each year, equivalent to 64 million gallons of gasoline. Factory engineers confirmed that butterfly valve failures accounted for 59% of all failures during the five-year operating cycle. LYV® is committed to developing precise flow control solutions that turn this critical weakness into the most reliable component in your system.

Why not use ordinary valves

1. Leakage emissions in petrochemical systems

Concentric butterfly valves sealed with EPDM can degrade at temperatures above 250°F, resulting in methane leakage of up to 30,000 ppm at the steam injection point, incurring an average EPA fine of US$68,000 per accident. The triple eccentric metal seal design we use maintains leaks below 50 ppm at 850°F.

2. Premature degradation of seals in water treatment systems

Standard EPDM/NBR elastomers absorb chlorine disinfectants and expand by up to 400% in drinking water systems. BestValve's proprietary PTFE/PFA laminate seals have an absorption rate of less than 0.01% after 10,000 hours of operation in a 5ppm chloramine environment.

3. Cavitation damage in pump discharge piping

Wafer valves generate steam bubbles by throttling, and when the bubbles burst, they cause an impact force of up to 60,000 psi on the pipe wall. The valve disc geometry we designed reduces hydrodynamic torque by 70%, eliminating cavitation erosion, and has been verified by ASME NDT scans.

Precision Engineering Specifications

design innovation

1. triple offset geometry

Zero frictional contact eliminates seal wear

Progressive engagement prevents leaks caused by vibration

Working angle from 0° to 90°, lag less than 0.5°

2. Cavitation control disk

Airfoil profile verified by CFD simulations

Maintain stable flow coefficient from 30% to 100% opening

Relieves high drops of more than 40 bar

3. Cryogenic valve stem

Cryogenic treatment (−320°F) enhances grain structure

Rockwell hardness C: 48 HRC

Corrosion allowance for all parts in contact with liquids: 3mm

Application Engineering

cost reduction