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Paddle/Flap Type Flow Meter and Switches

Paddle/Flap/Target/Vane Flow Meter and Switches Products

Paddle, flap, target, and vane flow meters belong to a category of mechanical flow meters that measure the flow rate by the force exerted on a known area by the flowing media. These meters are straightforward in design and operation, making them suitable for a wide range of applications, including water treatment, HVAC, and industrial processes. They are particularly useful for measuring flow in large pipes and ducts where other types of flow meters may not be practical or cost-effective.

These devices offer the advantage of being able to measure flow in both clean and dirty fluids. The simplicity of their design translates to ease of installation and low maintenance, with the mechanical nature of the measurement providing a robust and reliable method for flow monitoring. While they may not offer the precision of some advanced flow meters, paddle/flap/target/vane flow meters provide a valuable solution for applications where simplicity and durability are key considerations.

DPT
Target Type Flow Meter

For Liquids | up to 500 GPM | up to 580 PSIG | up to 176 °F | Brass or SS | 3/8" to 3" NPT | Patented Design | Rate Display or Digital Bargraph

Starting at $598
Measuring Range
1.5...8 GPM to 225...500 GPM
Fittings
3/8"...3" NPT Thread
Body Material
Brass, 316-Ti SS
Max. Pressure
580 PSIG @ 70 °F
Media Temperature Range
-10...176 °F (80 °C)
Accuracy
± 3 % FS
Media Category
Liquid
    Patented Target/Leaf-Spring Design
    Minimal Wear Components
    Low Pressure Loss
    Accuracy ± 3% of Full Scale
    Rate Display or Digital-Bargraph
FPS
Insertion Paddle Flow Switch

For Liquids | up to 760 GPM | up to 450 PSIG | up to 250 °F | 1" NPT | 1" to 8" Pipes | Brass or SS | SPDT Switch | Adjustable Switch Point

Starting at $175
Fast Delivery
Switching Range
0.9...4.4 GPM to 375...760 GPM
Fitting
1" NPT Thread
Wetted Material
Brass, SS
Max. Pressure
160 PSIG (Brass) / 450 PSIG (SS)
Max. Temperature
250 °F (120 °C)
Media Category
Liquid
    Externally Adjustable Switch Point
    Position-Independent Installation
    High Capacity SPDT Mechanical Switch
    Brass and SS Construction
    For Pipes 1" to 8" in Diameter
    Suitable For Water and Compatible Low-Viscosity Liquids
    Quick Delivery
    Sample Applications: Monitoring Cooling or Lubricant Circuits, Dry Run Protection for Pumps, Prevention of Low Water Levels
LSP
Air Flow Switch For HVAC Ducts

For Horizontal Square/Rectangular HVAC Ducts | Adjustable Switch-point | SPDT Mechanical Switch | Up to 1,575 FPM and 85 PSI |

Starting at $166
Fast Delivery
Switching Range
195...1575 FPM
Wetted Materials
Galvanized Steel/Brass/SS
Housing
Base - ABS / Cover - Polycarbonate
Switch Capacity
15 A Resistive, 8 A Inductive
Max. Temperature
185 °F (85 °C)
Ingress Protection
IP65 (From Outside)
Mounting
Flat Plate for Square/Rectangular HVAC Ducts
Media Category
Gas
    Adjustable Switchpoint
    SPDT Mechanical Switch
    For Horizontal Square/Rectangular HVAC Ducts
    Quick Delivery
    Sample Applications: Air Conditioning Ducts, Air Discharge and Exhaust Gas Channels, Pneumatic Conveyors, Filtration, Cyclones, Cooling and Drying Plants, and Blower Performance Monitoring
PPS
Plastic Paddle Flow Switch

Made in the USA | For Liquids | Low Cost | Bi-directional | Low Pressure Drop | 9.5 to 28.5 GPM Switching Range | Up to 145 PSI and 225 °F

Starting at $159
Fast Delivery
Switching Range
9.5...28.5 GPM
Fittings
1" NPT or G1 Male Threads
Body Material
Polysulfone
Max. Pressure
145 PSIG
Max. Temperature
225 °F (105 °C)
Media Category
Liquid
    Easy to Install
    Low Cost
    Bi-directional
    Low Pressure Drop
    Made in the USA
    Quick Delivery
PSR - PS
Paddle Flow Switch

Made in USA | Low Cost | For Liquids | Adjustable Switch-point | Simple, Reliable Design | Brass or SS | Inline or Insertion | Up to 3,600 PSI and 230 °F

Starting at $110
Fast Delivery
PSR Switching Ranges
0.6...1.2 GPM to 12.6...17.7 GPM
PS Switching Ranges
18...24 to 101...141 GPM
Fittings
1/4"...1-1/2" NPT Thread
Body Material
Brass, SS
Max. Pressure
1450 PSIG (Brass) / 3600 PSIG (SS)
Max. Temperature
230 °F (110 °C)
Reed Switch Contact
SPST Standard, SPDT (Optional)
Media Category
Liquid
    Adjustable Switch Point
    Easy to Install
    Brass or SS Construction
    Low Cost
    Simple, Reliable Design
    Certifications/Approvals: cCSAus
    Sample Application Areas: Chillers, Cooling Circuits, Pump Protection, Water Fire Suppression, Eye Wash Stations & More
    Made in the USA
    Top Seller
    Quick Delivery
    BABA (Build America, Buy America) complaint
TSK
Flap Style Flow Meter

For Liquids | up to 6600 GPM | up to 570 °F | 1-1/2" to 20" ANSI Flange | Horizontal or Vertical Installations | Low Head Loss | Tolerant of Dirty Liquids and Suspended Solids

Starting at $3,268
Flow Range
6.6...26 GPM to 880...6600 GPM
Accuracy
± 2.5% of Reading
Fittings
1½"...20" ANSI Flange or DIN Wafer
Max. Pressure
Per ANSI CL 150/300 or DIN PN 40 (Depending on Model)
Max. Operating Temperature
Up to 570 °F (300 °C) (Depending on Model)
Media Category
Liquid
    Available Materials of Construction Include Stainless Steel, Hastelloy® C22, and PTFE
    Line Sizes from 1½"...20"
    Can Be Supplied for Horizontal or Vertical Piping Runs
    Flap Measuring Technique Yields Very Low Head Loss
    Excellent Tolerance to Dirty Liquids and Suspended Solids
    Optional Setpoint Switches, 4-20 mA with HART® or Profibus-PA®, Foundation Fieldbus®
    Superior Dampening System for Stable Flow Readings
    Calibrations for Media Density Available
    Certifications/Approvals: ATEX, IECEx, SIL

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Choosing KOBOLD means opting for a partner who understands your needs and is equipped to help you tackle the challenges of modern industry. We are not just a supplier; we are a partner committed to contributing to your success.

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