VA45

Variable area flowmeter for low pressure gas applications

  • Glass tube with easy-to-read scale
  • For use in gas supply lines of furnaces, protective gas or heating systems
  • Flange: DN15…40 / ½…1½”; also NPT, G, hose connection

The VA45 is a glass tube variable area (VA) flow meter for flow measurement of gases at low operating pressures (<1 barg /<14.5 psig). The device is ideally suited for use in gas supply lines of industrial ovens, forges and furnaces or protective gas and heating systems (with process temperatures up to +100°C / +212°F).

Product positioning

For low pressure gas applications

Measurement principle

Variable area float

Measured media

Gases

Process pressure

max. 1 barg/14.50 psig

Process temperature

0…+100°C/+32…+212°F

Materials

Measuring tube Borosilicate glass

Gaskets

Ethylene propylene diene monomer (EPDM), Polytetrafluoroethylene (PTFE), Perfluoroelastomer rubber (FFKM), Fluoroelastomer rubber (FPM)

Process connection

Austenitic stainless steel (1.4404/316L), Polyvinylidene fluoride (PVDF), Nickel-plated brass

Flange connections

EN (1092-1): DN15…40

ASME (B 16.5): ½… 1½”

Thread connections Female:

G½, G¾, G1, G1½

½ NPT, ¾ NPT, 1 NPT, 1½ NPT

Other connections

Hose: DN15, DN25, DN40

Features & Options

Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.

  • Simple, low-cost measuring principle without auxiliary power
  • For direct reading of the flow and observation of the medium
  • Full scale value for gases: 2300…75,000 l/h / 85…2790 SCFH
  • Maximum measuring error: ±2.5% (acc. to VDI/VDE 3513-2) or ±2% of full scale
  • Turndown ratio: 10:1