Apollo Conbraco AGD4A, AGD User Manual
DESCRIPTION
RP4A
and RP40
Series backflow preventers from the table below.
RP40
¼” – 2”
RP40
2 ½”
– 10”
RP4A
½” – 2”
AGD AND AGD4A
SERIES
AIR GAP DRAINS
Job Name: Contractor:
Job Location: P.O. Number:
Engineer: Representative:
Tag: Wholesale Distributor:
The Apollo Air Gap Drain (AGD) is designed to funnel minor discharges
from a Reduced Pressure Backflow Preventer’s relief valve due to line
pressure fluctuations and/or minor check valve fouling, into the drainage
system. Drain piping is easily attached to the AGD’s threaded bottom
outlet. The AGD4A series ABS plastic AGDs have the additional option of
using the outlet OD to glue on a coupling using the appropriate cement or
the use of a flexible pipe coupling.
Note: The AGD is NOT designed to collect the full discharge capacity of the
relief valve. Please refer to the charts on pages 2 and 3 for RP Relief Valve
full discharge rates.
The appropriate AGD should be selected for Apollo’s Reduced Pressure
RP4A Series AGD Model No. Order Code A B C OD of C D Wt.Each
1/2" AGD4A1 AGD4A1 6 1/2 3 3/8 1" FNPT 1 1/4" Pipe 2 5/8 0.1
3/4" AGD4A1 AGD4A1 6 1/2 3 3/8 1" FNPT 1 1/4" Pipe 2 5/8 0.1
1" AGD4A1 AGD4A1 6 5/8 3 3/8 1" FNPT 1 1/4" Pipe 2 5/8 0.1
1 1/4" & 1 1/2" AGD4A112 AGD4A112 8 1/2 4 1/8 1 1/2" FNPT 2" Pipe 3 1/2 0.2
2" AGD4A2 AGD4A2 10 5 3/8 2" FNPT 2 1/2" Pipe 4 1/4 0.35
RP40 Series AGD Model No. Order Code A B C OD of C D Wt.Each
1/4", 3/8", 1/2" AGD4012 AGD4012 6 1/2 3 3/8 1" FNPT 1 1/4" Pipe 2 5/8 0.1
3/4" & 1" AGD401 AGD401 8 1/4 4 1/8 1 1/2" FNPT 2" Pipe 3 1/2 0.2
1 1/4", 1 1/2, & 2" AGD2 40-200-X1 11 1/4 5 1/8 1" FNPT N/A 5 1/4 3.4
2 1/2" & 3" AGD3 40-200-X2 19 9 7/8 2" FNPT N/A 7 11.0
4" AGD3 40-200-X2 20 9 7/8 2" FNPT N/A 7 11.0
6" AGD3 40-200-X2 21 9 7/8 2" FNPT N/A 7 11.0
8" AGD4 40-200-X3 22 11/16 12 11/16 3" FNPT N/A 10 12.45
10" AGD4 40-200-X3 25 11/16 12 11/16 3" FNPT N/A 10 12.45
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA ; www.apollovalves.com ; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1107 ©05/12 Page 1 of 3
RELIEF VALVE DISCHARGE RATES
MODEL
RP40
AGD AND AGD4A
SERIES
AIR GAP DRAINS
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA ; www.apollovalves.com ; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1107 ©05/12 Page 2 of 3
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