Glass tube variable area flowmeter FGM4500 V/A Master

Glass tube variable area flowmeter FGM4500 V/A Master

The V/A Master meter is a glass tube variable area flowmeter providing visual indication of flow rate over a 12-1/2 to 1 range on a linear scale. Meter seals are either O-ring or packing gland to suit the application. The glass tube can easily be removed for range change or for cleaning. Meters are available with optional one or two bi-stable alarms systems.

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Designed for flowrate measurements in many industries including system manufacture, food, water treatment plants and chemical. Aggressive fluid applications are possible because the fluid wetted parts can be made from a variety of metals and

  • Design type FGM4500 (10A4500)– O-Ring Seals Design

With Horizontal/vertical threaded or flanged connections

  • Design type FGM4650(10A4650)- Packing Gland Design

Flanged connections

With Horizontal/vertical threaded or flanged connections

  • Easy range change and cleaning-no removal from the line required.
  • Excellent wide angle visibility of flow rate over a linear scale.

Application

Clean, low viscosity liquids and gases

Mounting

Vertical, Horizontal in line

Connections

1/2 in. to 1-1/2 in., threaded, or flanged

Flow ranges

Water flows: 12 -5400 GPH

Air flows: 48-8940 SCFH

Flow turndown

Typically 12-1/2:1

Operating pressure

Up to 300 PSIG

Operating temperature

Up to 250F (120 °C)

Nominal scale length

10 in.

Accuracy

2% Full Scale

Alarms

Inert gas switches, up to 2 off

Tube material

Borsilicate 3.3 glass

Float material

Stainless steel, PVC, Tantalum, HastelloyTM, PTFE, Monel, Others

Fitting material

Stainless steel, PVC

Features

  • Provides visual indication of flow rate on a linear scale over a turndown of about 12½ : 1.
  • Removable glass tube — allows range change or cleaning without removing the meter from the line.
  • Meter seal options: either O-ring seals (design type FGM4500 / 10A4500) or packing gland seals (design type FGM4650 / 10A4650) to suit different applications.
  • Mounting options: horizontal or vertical, with threaded or flanged connections.
  • Intended for clean, low-viscosity liquids and gases.
  • Maximum water flows up to ~5,400 GPH (≈20,400 l/h) in certain sizes.
  • Operating pressure up to ~300 psig (≈20.7 bar) in some configurations.
  • Maximum operating temperature around ~250 °F (≈120 °C) for standard version.
  • Tube material: borosilicate 3.3 glass.
  • Float/ wetted-part material options are wide (stainless steel, Monel, Hastelloy, tantalum etc) to suit various fluids / environments.
  • Optional alarm systems: one or two bi-stable alarms for flow condition monitoring.