Product Details

• The most practical and economical calibrated measuring devise used to determine infiltration in newly installed sewer lines, as well as substantial flows in existing pipes
• Thel-Mar weirs offer the advantage of a 90 degree v-notch for measuring small infiltration flow where accuracy is of prime importance and the rectangular portion which measures larger volume flow rates
• Weirs come in 6"- 16" sizes, both as a standard weir or with the bubbler tube and adapters that house a 15" weir in pipes 18"-48" in size
• Rugged construction and non-corroding materials that make this weir extremely reliable
• All graduations are laser etched for clarity and longevity
• Weir measurements have a +/- 5% accuracy, with a 2% accuracy at moderate and high flow rates
• Optional bubble level can be mounted at the top of the weir's face plate for easy visibility
• All weirs are calibrated in US Gallons Per 24 Hours. Calibration lines are in 2 millimeter increments