Selecting the right Rubber Dam

Air Filled

Water Filled

Accurate upstream water level control

 √

 √

Even overflow below 90% height

 ×

 √

No v-notch

 ×

 √

Small concrete footprint

 √

 ×

Small pipe diameter

 √

 ×

Risk of freezing water in pipes

 ×

√ 

Requires additional heating system

 ×

 √

Stilling well to fill bladder

 ×

 √

Requires clean water as a means of filling

 ×

 √

Requires air as a means of filling

 √

 ×

Short filling / emptying time

 √

 ×

Control equipment occupies little floor space

 √

 ×

Condensate evacuation system

 √

 ×

Failsafe mechanical deflation system

 √

 √

Compact design

 √

 ×

Overall cost effectiveness

 √

 ×