AUTOMATIC VENT LIMITING DEVICE.
FOR MAXITROL REGULATORS RV48, RV52, RV53, RV61
EXCEPT WITH SUFFIX "L" WHICH HAS INTERGRAL VENT LIMITER.
MAINLY USED IN INDOOR APPLICATIONS TO LIMIT THE AMOUNT OF
ESCAPED GAS IN THE EVENT OF A DIAPHRAM FAILUE.Randell
HD GAS801HDGAS801Randell
HD GAS801HDGAS801Bakers Pride
AS-M1221AM1221X