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Flow Meters

King Instruments Flow Meters for Commercial Water Treatment SystemsBlue-White Rotameter Flow Meters for Commercial Water Treatment Systems

Flowmeters for monitoring systems flow available in panel-mounting or in-line styles for easy installation.

King Instruments’ Acrylic Tube Flow Meters’ economical machined cast acrylic block construction makes these flowmeters great for OEM use. Direct reading scales have white screen printed backs to enhance scale readability. Available in panel-mounting or in-line styles for easy installation.

Blue-White flow meters are offered in a several styles that are suitable for a wide variety of applications.

King Rotameter Flow Meters

Panel Mounted – Series 7520
Model No. Conn. (in) Range (GPM) Panel Mount Flowmeter King Rotameter
I-FM01P4 ¼FNPT, ½MNPT 0-1
I-FM02P4 ¼FNPT, ½MNPT .2-2
I-FM05P4 ¼FNPT, ½MNPT 1-5
I-FM10P4 1 MNPT 1-10
I-FM20P4 1 MNPT 2-20
In-Line – Series 7510
Model No. Conn. (in) Range (GPM) Inline Mount Flowmeter King Rotameter
I-FM02IN ½ FNPT 0-2
I-FM05IN ½ FNPT 0-5
I-FM10IN 1 FNPT 0-10
I-FM20IN 1 FNPT 0-20
I-FM40IN 1½ FNPT 0-40
I-FM50IN 1½ FNPT 0-50
I-FM60IN 2 FNPT 6-60
I-FM80IN 2 FNPT 10-80
I-FM100IN 2 FNPT 20-100

Blue-White F-550 Acrylic Block Panel Mount Rotameters, Dual Scale (GPM & LPM)

  • Durable, highly polished, one piece meter body.
  • Bulkhead nuts attach directly to inside panel.
  • Direct reading permanent scale.
  • White back reflector for easy reading.
  • Optional flow control needle-type adjustment valve.
  • 316 stainless, PTFE or Hastelloy floats and float guides.
  • Acceptable in direct sunlight applications.
Model No. Conn. (in.) Range (GPM) Type Mounting Type F550 Blue-White Flowmeter
F-55250L ¼” 0.025-0.250 Acrylic Block Panel Mount
F-53375L ⅜” 0.1-1 Acrylic Block Panel Mount
F-55376L ⅜” 0.2-2 Acrylic Block Panel Mount
F-55500L ½” 0.5-5 Acrylic Block Panel Mount
F-55750L ¾” 1-10 Acrylic Block Panel Mount
F-55005L 1” 1-5 Acrylic Block Panel Mount
F-55010L 1” 1-10 Acrylic Block Panel Mount
F-55015L 1” 1-15 Acrylic Block Panel Mount
F-55200L 1” 2-20 Acrylic Block Panel Mount

Blue-White F-300 Pitot Tube Acrylic Clamp-On Insertion Mount, Saddle Rotameters, Dual Scale (GPM & LPM)

  • Horizontal Flow
  • Well suited for closed pipe installations
  • Easy to read dual scale (GPM / LPM), screen printed on both sides of the meter body
  • Acceptable for outdoor installations (direct sunlight okay)
  • Pitot Tube (impact tube) design makes it easy to install on existing pipe
  • One piece, machined acrylic meter body, annealed for added strength and chemical resistance
  • Included SS clamps and gasket seal
  • For use on PVC or Copper Pipes (refer to literature)
Model No. Conn. (in.) Range (GPM) Type Mounting Type F-300 Blue-White Flowmeter
F-30100P 1” Saddle 5-35 Pilot Tube Acrylic Saddle
F-30150P 1 ½” Saddle 20-100 Pilot Tube Acrylic Saddle
F-30200P 2” Saddle 40-150 Pilot Tube Acrylic Saddle
F-30600P 6” Saddle 250-1050 Pilot Tube Acrylic Saddle

Blue-White F-400N Acrylic Tube In-Line Rotameters, Dual Scale (GPM & LPM)

  • Tough machined acrylic meter body, highly polished to a clear finish.
  • Direct reading permanent scale.
  • White or yellow back reflector for easy reading.*
  • FNPT adapters with high grade Viton o-ring seals and aluminum “stress ring” thread supports.
  • 316 stainless steel or Hastelloy rod guided floats.
  • Acceptable in direct sunlight applications..
Model No. Conn. (in.) Range (GPM) Type Type F-400 Blue-White Flowmeter
F-40250LN-4 ¼” FNPT 0.025-0.25 Acrylic Tube In-Line
F-40375LN-6 ⅜” FNPT 0.1-1 Acrylic Tube In-Line
F-40500LN-6 ⅜” FNPT 0.5-5 Acrylic Tube In-Line
F-40375LN-8 ½” FNPT 0.1-1 Acrylic Tube In-Line
F-40376LN-8 ½” FNPT 0.2-2 Acrylic Tube In-Line
F-40500LN-8 ½” FNPT 0.5-5 Acrylic Tube In-Line
F-41017LN-12 ¾” FNPT 1.0-17 Acrylic Tube In-Line
F-41000LN-12 ¾” FNPT 2.0-20 Acrylic Tube In-Line
F-40750LN-16 1” FNPT 1.0-10 Acrylic Tube In-Line
F-41017LN-16 1” FNPT 1.0-17 Acrylic Tube In-Line
F-41000LN-16 1” FNPT 2.0-20 Acrylic Tube In-Line

Blue-White F-440 Polysulfone Molded Rotameter, Dual Scale (GPM & LPM)

  • Tough Polysulfone meter body resists high temperatures and pressures
  • Compact size for tight installation spaces
  • 2” scale length
  • In-line or panel mount configurations available (for vertical installation)
  • Optional integral flow adjustment valve
  • Standard Models: 316 SS guide rod
Model No. Conn. (in.) Range (GPM) Type Type F-440 Blue-White Flowmeter

F-440E Blue-White Flowmeter

F-440A Blue-White Flowmeter
F-44375L-8 1/2″ MNPT 0.1-1 Polysulfone Molded In-Line
F-44376LE-8 1/2″ MNPT 0.2-2 Polysulfone Molded Panel Mount
F-44376LE-6 3/8″ MNPT 0.2-2 Polysulfone Molded Panel Mount
F-44500LA-8 1/2″ MNPT 0.5-5 Adjustable Polysulfone Panel Mount
F-44500L-8 1/2″ MNPT 0.5-5 Polysulfone Molded In-Line
F-44500LE-8 1/2″ MNPT 0.5-5 Polysulfone Molded Panel Mount
F-44750LE-8 1/2″ MNPT 1.0-10 Polysulfone Molded Panel Mount
F-44750L-12 3/4″ MNPT 1.0-10 Polysulfone Molded In-Line
F-44750LE-12 3/4″ MNPT 1.0-10 Polysulfone Molded Panel Mount
F-44330LE-8 1/2″ MNPT 3.0-30 Polysulfone Molded Panel Mount

Blue-White F-450 Flow Meters, Polysulfone Molded Rotameter, Dual Scale (GPM & LPM)

  • Available in 3/8”, 1/2”, and 3/4” MNPT sizes.
  • Injection molded, chemical resistant Polysulfone.
  • Quik Loc (half union) connectors.
  • Units available in configurations for in-line and panel mount installation.
  • Optional flow control needle metering valve.
  • Dual scale: Gallons per minute (GPM) and Liters per minute (LPM).
  • Choice of 4” or 6” scale.
Model No. Conn. (in.) Range (GPM) Type Type F-450 Blue-White Flowmeter

F-450E Blue-White Flowmeter

F450A Blue-White Flowmeter
F-45375L-8 1/2″ MNPT 0.1-1 Polysulfone Molded In-Line
F-45375L-6 3/8″ FNPT 0.1-1 Polysulfone Molded In-Line
F-45376LE-8 1/2″ MNPT 0.2-2 Polysulfone Molded Panel Mount
F-45376L-6 3/8″ FNPT 0.2-2 Polysulfone Molded In-Line
F-45500LE-8 1/2″ MNPT 0.5-5 Polysulfone Molded Panel Mount
F-45500L-6 3/8″ FNPT 0.5-5 Polysulfone Molded In-Line
F-45750LE-8 1/2″ MNPT 1.0-10 Polysulfone Molded Panel Mount
F-45750LE-12 3/4″ MNPT 1.0-10 Polysulfone Molded Panel Mount
F-45750LA-12 3/4″ MNPT 1.0-10 Adjustable Polysulfone Panel Mount
F-45750L-12 3/4″ MNPT 1.0-10 Polysulfone Molded In-Line

Blue-White F-451N High Volume Polysulfone Molded Rotameter, Dual Scale (GPM & LPM)

  • A one piece impact, heat and chemical resistant Polysulfone meter body; Polysulfone adapters 2″ and 1″; PVC 1-1/2″.
  • Calibrations in gallons per minute, liters per minute and SCFM.
  • Clear Polycarbonate shielded model available.
  • Direct reading, permanent scales.
  • Wear and corrosion resistant internal parts.
  • FKM O-ring seals.
  • FNPT, inline MNPT or 90° elbow connections.
Model No. Conn. (in.) Range (GPM) Type Type F-451N Blue-White Flowmeter

F-451N Panel Mount Blue-White Flowmeter
F-451006LHN 1″ FNPT 0.5-6 Polysulfone Molded In-Line In-Line
F-451001LHN 1″ FNPT 1.0-10 Polysulfone Molded In-Line In-Line
F-451001LHNE 1″ MNPT 1.0-10 Polysulfone Molded In-Line Panel Mount
F-451002LHN 1″ FNPT 2.0-20 Polysulfone Molded In-Line In-Line
F-451002LHNE 1″ MNPT 2.0-20 Polysulfone Molded In-Line Panel Mount
F-451003LHKN 1″ FNPT 3.0-30 Polysulfone Mld. For Highly Corrosive Applications In-Line
F-451003LHN 1″ FNPT 3.0-30 Polysulfone Molded In-Line In-Line
F-451003LHNE 1″ MNPT 3.0-30 Polysulfone Molded In-Line Panel Mount
F-451003LHN-24 1 1/2″ FNPT 3.0-30 Polysulfone Molded In-Line In-Line
F-451004LHN 1″ FNPT 4.0-40 Polysulfone Molded In-Line In-Line
F-451004LHNE 1″ MNPT 4.0-40 Polysulfone Molded In-Line Panel Mount
F-451004LHN-24 1 1/2″ FNPT 4.0-40 Polysulfone Molded In-Line In-Line

Note: Please contact Applied Membranes Inc. for additional pricing and availability on models that are not listed.