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We are Vögtlin Instruments GmbH, your partner for intelligent and innovative gas flow measurement and control instrumentation.

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The Vögtlin product line-up covers thermal mass flow meters and mass flow controllers for gases and the first long-life integrated battery mass flow meter with built-in touch display. Our high-precision devices come equipped with digital and analog interface, IP67/NEMA6 protection and ATEX certification.

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Mass Flow for Gases

red-y smart series

red-y compact series

d·flux multi series

SmartTrak® series

red-y industrial series

red-y smart pressure controller

red-y OEM Solutions

Software get red-y

VA-Flowmeters & Valves

Q-Flow

M-Flow
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With our international sales & support network and short response times, we are always close to our customers. We will gladly assist you with any questions you may have about gas flow!

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Q-Flow – Online Quotation

Online Quotation for Variable Area Flowmeters for Gases Q-Flow

Step 1 of 2 - Configure VA-Flowmeter

Configure your variable area flowmeter in just a few steps!
Our sales team is at your disposal for customer-specific products. Please contact us for further questions.
Choose setup:*
- Without valve
- With valve at the inlet
Materials: Body: Anodized aluminium / Valve: Nickelized brass
Seals: FKM
Connection: On the rear / G 1/4" female for compression fittings
Materials: Body: Anodized aluminium / Valve: Nickelized brass
Seals: FKM
Connection: On the rear / G 1/4" female for compression fittings
Valve: Precisely adjustable, 15-turn micro valve, practically hysteresis-free
The control range (Kv-value) is optimized for the full scale
Select measuring tubes size:*
Select measuring range for Q-Flow 80 (air):
Q-Flow 80 · Measuring ranges with direct reading scales · Alu / FKM · Connection G1/4" SL
Operating conditions^: 20°C, 1013 mbar abs / Air
Select measuring range for Q-Flow 140 (air):
Q-Flow 140 · Measuring ranges with direct reading scales · Alu / FKM · Connection G1/4" SL
Operating conditions^: 20°C, 1013 mbar abs / Air
Specify desired measuring range:
Select the required quantity:
Select the required number of flowmeters
Inlet pressure (bar g)
Specify the pressure at the inlet in bar g
Application / remarks:

Quote another product:

Mass Flow Meters (MFM) and Mass Flow Controllers (MFC) for Gases:

Variable Area Flowmeters for Gases:

High-precision Control Valves for Gases:

Do you want to see or devices in action or do you need a personal contact nearby?