Itron-Actaris B42R-1 Regulator
1"IRV,1/2x9/16"Orif,6-16"DrkGr
B42R-1 is the direct replacement for B42R-1-BLUE
This item does not qualify for free shipping.
QUESTIONS & ANSWERS
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What size pipe to vent reg and how far
Please see link below for the manual.
Manual