AR Air Regulators in multiple burner systems hold constant airfuel ratio and mixture pressure with reducing burner port area of up to 90%. Used in the air line, the top main diaphragm chamber is referenced through a bleed loader set for the desired burner mixture pressure. The bottom main diaphragm chamber is referenced downstream of the Flomixer or Flanged Mixing Tee. Mixture pressure and air-fuel ratio are held constant as burners are turned off. Available in sizes 3/4'' through 3'' NPT for 150°F service and 2 psig inlet pressures. Series 5261 is also available for 300°F service and 5 psig inlet pressures.
CAPACITY TABLE
Model Number
Pipe Size
SCFH Air Flow @ 4.0" W.C. Pressure Drop
Inlet
Outlet
6 AR
3/4"
3/4"
500
8 AR
1"
1"
1,000
12 AR
1-1/2"
1-1/2"
2,000
20 AR
2-1/2"
2-1/2"
5,000
24 AR
3"
3"
8,000
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