A “true” venturi meter has static pressure taps at
both the inlet and throat sections. A static pressure tap senses
the pressure in a cylindrical area where the flow is not changing
direction and is parallel to the pipe wall. This unique shape
conditions the flow in the transition section to provide a more
uniform velocity profile in the throat. These hydraulic design
features result in very accurate, reliable, and wide-ranging flow
The UVT has a cylindrical inlet with a static pressure
tap, a transition section employing two constriction angles of
40° and 7° to condition the flow, and a cylindrical throat
section of sufficient length to install a static pressure tap.
This unique design provides the advantages of a “true”
venturi meter at reasonable cost, not previously possible in differential
pressure primary meters. Unlike flow tubes on the market, the
BIF modified Venturi design utilizes our documented and extensively
tested corner inlet tap. Slightly reducing the installed accuracy
in favor of greater flexibility and cost savings, for the many
applications that can benefit from or require these features.
The BIF corner tap design performance, however, unlike flow tubes,
adheres to all other “true venturi“ principles. The
UVT offers a true static pressure tap at the throat location,
inlet flow conditioning, and an otherwise full hydraulic shape,
well known and proven, thereby continuing to offer all other benefits
of the Universal Venturi Tube.