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Orifice Assembly VMO

  • For use as a measuring or restricting orifice
  • Can be combined with valVario valves and regulators
  • Air and gas flow rate diagrams to facilitate configuration
  • Easy installation thanks to flanges with internal thread
  • Replaceable aluminium washers for optimal adjustment to local operating conditions
Orifice Assembly VMO

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Description   Documentation   Ordering Information

Ordering Information


Alternate Product

Model Model valVario Size Orifice Price Lead Time   Model Lead Time Order
VMO 110N05M06
valVario Size: 1; Orifice: 6mm*
VMO 110N05M06 1 6mm N/A Not Available  
VMO 115N05M06
valVario Size: 1; Orifice: 6mm*
VMO 115N05M06 1 6mm N/A Not Available   OM1NP04
VMO 120N05M12
valVario Size: 1; Orifice: 12mm*
VMO 120N05M12 1 12mm N/A Not Available   OM2NP04
VMO 125N05M12
valVario Size: 1; Orifice: 12mm*
VMO 125N05M12 1 12mm N/A Not Available   OM3NP04
VMO 240N05M16
valVario Size: 2; Orifice: 16mm*
VMO 240N05M16 2 16mm N/A Not Available   OM4NP12
VMO 250N05M32
valVario Size: 2; Orifice: 32mm*
VMO 250N05M32 2 32mm N/A Not Available   OM6NP12

*Contact Combustion 911 for other orifice sizes.


The valVario measuring orifice VMO is installed in gas control and safety systems, as well as in air systems used in industrial and commercial gas heat generation. It can serve as a restricting orifice when used in conjunction with valVario gas solenoid valves.

The test points are located in the measuring orifice housing. The measuring orifice VMO is a good-value alternative in areas where no standardized measuring orifice is required. The replaceable washers with different hole sizes allow the orifice to be adjusted perfectly to the local operating conditions.


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