First Stage
Red finish · 250 PSIG max inlet · reduces tank pressure to 10 PSIG
Part #DescriptionInlet × OutletMax inletOutletBTU/hr LP
MEGR-1122H-AAJCompact — fits tank domes1/4" × 1/2" FNPT250 PSIG10 PSIG1,000,000
MEGR-1622H-BGJFull size1/2" × 1/2" FNPT250 PSIG10 PSIG2,200,000
MEGR-1622H-DGJFull size3/4" × 3/4" FNPT250 PSIG10 PSIG2,500,000
MEGR-1622H-HGJFull size, POL inletF.POL × 1/2" FNPT250 PSIG10 PSIG2,300,000
MEGR-1622H-JGJFull size, POL inletF.POL × 3/4" FNPT250 PSIG10 PSIG2,750,000
Second Stage
Green finish · 10 PSIG inlet · set 11" WC, adjustable 9–13" WC
Part #DescriptionInlet × OutletMax inletOutletBTU/hr LP
MEGR-1222-BAFCompact1/2" × 1/2" FNPT10 PSIG11" WC500,000
MEGR-1622-BCFFull size, straight1/2" × 1/2" FNPT10 PSIG11" WC710,000
MEGR-1622-CFFFull size, straight1/2" × 3/4" FNPT10 PSIG11" WC1,300,000
MEGR-1622-DFFFull size, straight3/4" × 3/4" FNPT10 PSIG11" WC1,300,000
MEGR-1642-DFFFull size, 90° side outlet3/4" × 3/4" FNPT10 PSIG11" WC900,000
2 PSI Systems
White body, yellow inlet · factory set 2 PSIG, adjustable 1–2.2 PSIG
Part #DescriptionInlet × OutletMax inletOutletBTU/hr LP
MEGR-1232E-HBHIntegral two-stage, compactF.POL × 1/2" FNPT250 PSIG2 PSIG500,000
MEGR-1622E-BCHFull size, 2 PSI service1/2" × 1/2" FNPT10 PSIG2 PSIG1,100,000
MEGR-1622E-DCHFull size, 2 PSI service3/4" × 3/4" FNPT10 PSIG2 PSIG1,400,000
MEGR-1652E-DFHFull size, back mount3/4" × 3/4" FNPT10 PSIG2 PSIG1,300,000
Pair them right
MEGR-1122H or 1622H first stage with a MEGR-1622, 1642 or 1652 second stage gives double-failure overpressure protection — no more than 2 PSI downstream.
Built for the field
UL 144 listed. Stainless inlet screen, FKM seat discs, die-cast aluminum body, standard 3-1/2" mounting holes. 25-year recommended replacement life.
Cross-reference
MEGR-1122H-AAJ replaces Fisher R122H-AAJ, RegO LV3403TR and Cavagna 984HP-04. 2 PSI systems need a line regulator at each appliance.