Below is a chart comparing various types of elbow designs and how they perform against specific elbow-related problems in a pneumatic conveying system. Each elbow is rated by various categories including degradation, noise levels, downtime and costs. They can range on a scale of excellent to poor in relation to how that specific elbow performs in each situation.
ELBOW-RELATED FACTORS
SMART ELBOW® DEFLECTION ELBOWS
SPECIALTY IMPACT ELBOWS
PLUGGED TEE ELBOWS
CERAMIC BACKED/ LINED ELBOWS
LONG RADIUS SWEEP ELBOWS
STREAMERS, ANGEL HAIR, SNAKESKINS
GREAT
FAIR
FAIR
POOR
POOR
PELLET DEGRADATION AND GENERATION OF FINES
GREAT
FAIR
FAIR
POOR
POOR
NOISE LEVELS
GREAT
FAIR
FAIR
FAIR
FAIR
BUILD-UP AND PLUGGING
GREAT
POOR
POOR
FAIR
FAIR
WEAR RESISTANCE
GREAT
GOOD
GOOD
FAIR
POOR
LONGEVITY
GREAT
GOOD
GOOD
FAIR
POOR
REDUCED DOWNTIME
GREAT
GOOD
GOOD
FAIR
POOR
SHORT TERM COSTS
FAIR
FAIR
FAIR
FAIR
GREAT
LONG TERM COSTS
GREAT
GOOD
GOOD
FAIR
GOOD
