Fluid management

Flow and level control technologies

Most fluid management applications combine a combination of flow monitoring, using sensors or switches, with valves to regulate the fluid flow. The fluid is often fed to and from tanks, containers or vats that require level sensing to ensure the process is running correctly.

Case Studies

Application ideas and more.

• Food industry
See our range of pumps
• Animal feed
• Glue level control
• VEGA everyday radar

Below are sections containing a collection of use tools, guides and software to help you choose and use the right products for your application.

• Solenoid valves
• Flow monitoring
• Level sensing

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Solenoid Valves

Most automated fluid process systems use solenoid valves to control the flow of fluid and there are various factors that must be considered when choosing a valve. These include:

• Flow Coefficient - often called Kv
  The Kv value is the metric measure for the flow of a valve. It is defined as; The volume flow in cubic meters per hour of water at a temperature of between 5° and 40° Celsius with a pressure drop across the valve of 1 bar. Many manufacturers quote flow coefficient within their datasheets and it can be an effective way of determining correct valve sizing.



• Chemical compatibility
  Many process involve the handling of aggressive or caustic solutions and the materials within the valve must be compatibility to ensure a satisfactory working life of the valve.
  These guides provide useful chemical compatibility guidance:
  Fluid resistence guide
  Chemical compatability chart



• Temperature range
  If the media is hot - for example steam or hot oil, then the valve must have a suitable temperature rating.

Solenoid valve sizing software

This useful program created by Asco Joucomatic can help you calculate the Kv, the flow rate and the differential pressure of a valve or solenoid valve.

Pressure, length and temperature unit conversion integrated in the program. The program operates with Microsoft Excel software.

1. Depending on your application, choose one of the 3 spread sheets for air and gas/water and oil/steam. Enter your data in the boxes with blue letters.



2. You will automatically obtain your results in the printed sheet (data will be in red letters). For additional information about how to use this program, please read the "Kvshow1" file after downloading and decompressing the ZIP file.

The information provided is not valve brand specific and the Kv value is a universally quoted valve characteristic.

Download the software


Conversion tools

Temperature units conversion

°C °C °F °K Temp. °F °K

Pressure units conversion

bar bar PSI KPa Press. PSI KPa

Flow factors unit conversion

FACTOR Kv (l/min) Kv (l/min) Kvh (mc/hour) CVe (imp.gal/min) Cv (US gal/min) Kvh (mc/hour) CVe (imp.gal/min) Cv (US gal/min)

Kv flow factor calculation for liquids

Flow needed l/min. Differential pressure MEDIA Minimum Kv required mc/hour   bar Water Acetone Acetic Acid Ethilic Alcool Methanole Gasoline

Kv flow factor calculation for GAS with: ( p.input <= p.output/2)

Flow needed l/min. Nmc/hour Differential pressure MEDIA Minimum Kv required  bar Air Acetilene Ammonia Nitrogen Butane Hydrogen Nat. Gas Propane   Temp. °C

Kv flow factor calculation for GAS with: ( p.input > p.output/2)

Flow needed l/min. Nmc/hour Input Pressure bar Output Press. bar Diff. Pressure bar MEDIA Minimum Kv required Air Acetilene Ammonia Nitrogen Butane Hydrogen Nat. Gas Propane   Temp. °C