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Combustion 911
Supplying and Serving the Combustion Industry
an Olsträd Engineering Company

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Variable Gas/air ratio control with Solenoid Valve VAVVariable Gas/Air Ratio Control with Built-in Solenoid Valve VAV

  • All-purpose servo regulator for gaseous media with integrated safety valve
  • Suitable for a max. inlet pressure of 500 mbar (500 hPa/7 psig)
  • Minimum installation effort: no external impulse line required
  • Check indication by blue LED
  • Setting options from two sides
  • FM approved; UL listed
  • Certified for systems up to SIL 3 and PL e
  • Part of the valVario series

Description

The pressure regulator VAD, air/gas ratio control VAG, and variable air/gas ratio control VAV use servo technology to shut off and precisely control the gas supply to gas burners and gas appliances. They are for use in gas control and safety systems in all sectors of the iron, steel, glass, and ceramics industries, also in domestic or commercial heat generation, such as the packaging, paper, and food industries.

Variable air/gas ratio control VAV, Class A, for maintaining a constant gas/air pressure ratio for modulating-controlled burners. Pressure preset by the air control line. The ratio of gas pressure to air pressure remains constant. It can be set from 0.6:1 to 3:1. Pressure fluctuations in the combustion chamber can be compensated via the combustion chamber control pressure.

Ordering Information

Model and Description Model valVario Size Connection Mains Voltage plastic hose coupling? Valve Seat Price Cart
VAV 1T15N/NQBK
Connection: ½″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling; Valve seat: Reduced; valVario size 1
VAV 1T15N/NQBK 1 ½″ NPT internal thread 120 V AC; 50/60 Hz Yes Reduced
VAV 1T20N/NQAK
Connection: ¾″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling; Valve seat: Standard; valVario size 1
VAV 1T20N/NQAK 1 ¾″ NPT internal thread 120 V AC; 50/60 Hz Yes Standard
VAV 1T25N/NQAK
Connection: 1″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling; Valve seat: Standard; valVario size 1
VAV 1T25N/NQAK 1 1″ NPT internal thread 120 V AC; 50/60 Hz Yes Standard
VAV 2T40N/NQAK
Connection: 1½″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling; Valve seat: Standard; valVario size 2
VAV 2T40N/NQAK 2 1½″ NPT internal thread 120 V AC; 50/60 Hz Yes Standard
VAV 3T50N/NQAK
Connection: 2″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling; Valve seat: Standard; valVario size 3
VAV 3T50N/NQAK 3 2″ NPT internal thread 120 V AC; 50/60 Hz Yes Standard

For all other configurations Contact Combustion 911

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valVario Size 1
valVario Size 2
valVario Size 3
VAV 1T15N/NQBK
Price:
Connection: ½″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling adapter; Valve seat: Reduced; valVario size 1
VAV 1T20N/NQAK
Price:
Connection: &frac32;″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling adapter; Valve seat: Standard; valVario size 1
VAV 1T25N/NQAK
Price:
Connection: 1″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling adapter; Valve seat: Standard; valVario size 1
VAV 2T40N/NQAK
Price:
Connection: 1½″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling adapter; Valve seat: Standard; valVario size 2
VAV 3T50N/NQAK
Price:
Connection: 2″ NPT internal thread; Mains voltage: 120 V AC; 50/60 Hz; With plastic hose coupling adapter; Valve seat: Standard; valVario size 3

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