PARSHALL, PALMER BOWLUS, AND "H" FLUMES
Primary Devices for Open Channel Flow Measurement
flumes,water flow monitoring instruments FEATURES:
  • The Palmer-Bowlus constricts the flow vertically and horizontally and can be molded to be inserted into an existing half-round pipe.
  • The Parshall flumes constrict primarily horizontally, and are design for rectangular or trapezoidal channels.
  • "H" flumes attach to the ends of pipes where the water is free-falling.
To Order Call 1-800-876-1172
Flume Options & Prices

 

On this page:

• Product Description
• Options & Prices

Downloads (PDF):

• Flumes Brochure

Additional Information:

• Parshall Diagrams & Dimensions
• How to install a Parshall Flume
• Palmer-Bowlus Diagrams & Dimensions
• How to install a Palmer-Bowlus Flume
• "H" Flume Diagrams & Dimensions
• Product Support

Product Description

Global Water offers water flumes constructed of high quality polyester resin and fiberglass.  These flumes are durable, highly accurate, and easy to install.

Global water offers primary device flumes that constrict an open channel's flow either horizontally or vertically or both.  Once the flume flow is backed up behind the constriction, there is a defined relationship between the upstream water level and the open-channel flow through the constriction.  This relationship can be determined either by an equation or a look-up table.

Global Water offers three standard molded flumes: the Palmer-Bowlus Flumes, the Parshall Flumes, and the H Flumes.

  • The Palmer-Bowlus constricts the flow vertically and horizontally and can be molded to be inserted into an existing half-round pipe.  Click HERE for Diagrams and Palmer Bowlus flume table of Dimensions.
  • The Parshall flumes constrict primarily horizontally, and are design for rectangular or trapezoidal channels.  Click HERE for Diagrams and Parshall flume table of Dimensions/Flow Data.
  • H flumes attach to the ends of pipes where the water is free-falling.  Click HERE for Diagrams and H-flume table of Dimensions.

Installation
For a flume to work properly, there must be freely flowing water out of the flume.  The flow cannot be backed up downstream or the reading will be erroneous and misleading.  Make sure that you have free-flowing water without major inflows downstream of the flume.  The open channel flow measurement can be made by using a float in an adjacent stilling well, a pressure transducer, or by an ultrasonic sensor.

Options & Prices
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
Terms and Conditions

ORDER NOW

Contact Global Water directly to obtain a quote for the following flumes:
Palmer-Bowlus Flume
U shaped channel flume specifically designed for monitoring flows in pipes. 		$Varies
Parshall flume
Industry standard rectangular flume used to monitor streams and channels. 		$Varies
H flume
Used to monitor free fall outflow from pipes or channels when a Palmer-Bowlus or Parshall Flume will not work. 		$Varies
ACCESSORIES
Flume-SWP2 2" Stilling Well Port (PN# 01-320)
All stilling well ports will be on the left hand side, facing down stream, unless otherwise specified.  A 2" stilling well is required for use with submersible sensor. 		$99 flumes,water flow monitoring instruments
Flume-SW2 2" Stilling Well (PN# BP0000)
2" Stilling Well for use with the 2" stilling well port. 		$44
Flume-SG Staff Gauge (PN# 01-004)
All staff gauges will be in inches unless otherwise specified. 		$140
Flume-BT Bubbler Tube (PN# BP1100)
1/4 inch OD stainless steel. 		$115
Flume-SW8 Attached 8" Stilling Well (PN# BP1050)
All stilling wells will be on the left hand side, facing down stream, unless otherwise specified. 		$977
Flume-WW Wingwalls (pair) (PN# 01-003)
45 degree angle flat wing walls. 		$781
Flume-CAC Concrete Anchor Clips (PN# BP1150)
Charge is per clip, the number of clips varies with flume size.  Example Parshalls over 12 inch normally require 8 clips. 		$24 flumes,water flow monitoring instruments
RELATED PRODUCTS
FC200 Open Channel Flow Monitor
Monitor and display total and current flow, datalogging options available. 		$1,570
WL16 Water Level Logger
Record water level and using a depth to flow table convert the data into flow data. 		$877
FP101 Flow Probe
Water velocity probe for determining open channel flow. 		$767

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Global Water Instrumentation, Inc. • 11390 Amalgam Way, Gold River, CA, 95670, USA • 916-638-3429 • globalw*globalw.com
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