Valves
EXIT PIPING
EXIT PIPING
CONBRACO IND. INC.
MADE IN U.S.A.
I-9145-00 Rev. D
AIR GAP DRAINS
for installation with:
APOLLO RP4A 1/2" THROUGH 2", AND
APOLLO RP40 1/4" THROUGH 1"
REDUCED PRESSURE PRINCIPLE (RP)
BACKFLOW PREVENTERS
DESCRIPTION
The Apollo Air Gap Drain (AGD) is designed to funnel
minor relief valve discharges due to line pressure
fluctuations and/or minor check valve fouling, into the
drainage system.
Drainage piping is easily attached to the threaded
portion of the AGD. The Female NPT size is listed in
the table under "EXIT PIPING THREADS C". The
AGD is ABS plastic and drainage piping may also be
glued on with a coupling and the appropriate cement
or using a flexible pipe coupling. The OD is listed in
the table under "OD OF C".
NOTE: The AGD is designed to hold its own weight
and two feet of straight pipe. Additional pipe or the
use of bends or elbows which induce any side load or
bending requires pipe hangers for support.
DIMENSIONS (in)
AGD
RP4A S IZE
MODEL
AB
THRE ADS COD OF C
NO.
1/2" AGD4A-1 6.5" 3.4" 1" FNPT 1 1/4" PIPE
3/4" AGD4A-1 6.5" 3.4" 1" FNPT 1 1/4" PIPE
1" AGD4A-1 6.6" 3.4" 1" FNPT 1 1/4" PIPE
1 1/4" 1 1/2" AGD4A-112 8.5" 4.1" 1 1/2" FNPT 2" PIPE
2" AGD4A-2 10.0" 5.3" 2" FNPT 2 1/2" PIPE
AGD
RP40 SIZE
MODEL
AB
THRE ADS COD OF C
NO.
1/4" 3/8" 1/2" AGD4A-1 6.5" 3.4" 1" FNPT 1 1/4" PIPE
3/4" 1" AGD4A-112 8. 3" 4.1" 1 1/2" FNPT 2" PIPE
Note: Kits AGD4A-1 and AGD4A-112 contain
extra parts, see notes under the installation
instructions on the back of this sheet.
A
A
3/4
USA
B
RP40 1/4" - 1"
B
.
X
O
.
A
C
X
M
A
A
R
F
M
o
0
8
1
5
7
1
Z
B
I
P
N
S
R
O
P
C
UPC
R
400
full discharge capacity of the relief valve.
Allen hex
end of stud.
C
Washer between
AGD and nut.
C
NOTE: The AGD is not designed to collect the
Typical RP4A
PROPOSIT ION 65 W ARNING: This produ ct cont ains a ch emical known to the
state of California to cause birth defects or other reproduct ive harm.
INSTALLER: California law requires that this warning be given to the consumer.
INSTALLATION
NOTE: Isolate the RP device from line pressure
and relieve internal pressure before installing the
Air Gap Drain.
RP40 sizes 1/4", 3/8" and 1/2": AGD4A-1,
RP40 sizes 3/4" and 1": AGD4A-112
Tools for AGD4A-1 and AGD4A-112 installation on RP40:
Required AGD4A-1: 7/16" wrench or socket.
Required AGD4A-112: 1/2" wrench or socket
Note: These kits contain two studs, four nuts and threadlocker
which are not used for installation of the AGD on these valves.
1. Remove the existing bottom two bolts from the relief valve
cover.
RP4A 1/2" through 2"
(continued)
3. Apply several drops of the provided thread-locking
compound to the studs' threads near the relief valve body.
4. Thread the studs the rest of the way into the body until the
studs protrude from the machined face by 3/4" for the
AGD4A-1 and 1" for the AGD4A-112 and AGD4A-2. (The
stakes on the studs should limit their travel.) Wipe off the
excess thread-locking compound. Check that the AGD and
nuts will slip between the end of the studs and the vent, back
the studs out a turn or two if necessary.
2. Position the flange of the AGD over the relief valve cover
and line up the two holes with those in the cover.
3. Using the two provided 1 inch bolts and two provided
washers, attach the AGD to the assembly and tighten the bolts
firmly. DO NOT OVERTIGHTEN.
4. Re-establish line pressure within the RP and check for leaks.
5. Hand thread the drainage piping into the AGD. The AGD is
ABS plastic and discharge piping has the option of being glued
to the outer diameter (OD) of the air gap outlet with a coupling
and the appropriate cement or using a flexible pipe coupling if
the threaded drainage pipe is not desired. See the table for the
appropriate OD.
NOTE: The AGD is designed to support its own weight and two
feet of straight pipe. Additional pipe or the use of bends or
elbows which induce any side load or bending requires pipe
hangers for support.
RP4A sizes 1/2", 3/4" and 1": AGD4A-1
RP4A sizes 1 1/4" and 1 1/2": AGD4A-112
RP4A size 2": AGD4A-2
Tools for AGD4A-1 installation on RP4A:
Required: 7/16" open end wrench, 1/8" Allen wrench.
Helpful to have: 7/16" socket.
Allen hex
end of stud.
3/4" for AGD4A-1
1" for AGD4A-112
and AGD4A-2
5. Slip the AGD over the studs from the vent side. Place a
provided washer and a provided nut on each stud to hold the
AGD in place.
6. Allow time for the thread-locking compound to set. Then,
tighten the nuts with an open end wrench (7/16" for the
AGD4A-1 and 1/2" for the AGD4A-112 and AGD4A-2) until
snug. DO NOT OVERTIGHTEN.
7. Re-install the diaphragm and relief valve cover. Install the
previously removed bolts into the remaining holes and thread
provided nuts onto the studs. Tighten all firmly.
8. Re-establish line pressure within the RP and check for
leaks.
Tools for AGD4A-112 and AGD4A-2 installation on RP4A:
Required: 1/2" open end wrench, 5/32 Allen wrench.
Helpful to have: 1/2" socket.
Note: Kits AGD4A-1 and AGD4A-112 contain two bolts which
are not used for installation of the AGD on these valves.
1. Remove the relief valve cover bolts, relief valve cover, and
diaphragm.
2. Determine which two threaded holes line up with the AGD
mounting holes. Hand thread the provided studs from the
machined face side into those two holes about 1/2" deep for
AGD4A -1 or 3/4" deep for AGD4A-112 and AGD4A-2. If
necessary use an Allen wrench.
Conbraco Industries, Inc. P.O. Box 247 Matthews, N.C. 28106 (704) 841-6000 FAX (704) 841-6020 USA
PRINTED IN USA COPYRIGHT 2009 © CONBRACO INDUSTRIES, INC.
BACKFLOW PRODUCTS DIVISION
http://www.apollovalves.com
9. Hand thread the drainage piping into the AGD. The AGD is
ABS plastic and discharge piping has the option of being
glued to the outer diameter (OD) of the air gap outlet with a
coupling and the appropriate cement or using a flexible pipe
coupling if the threaded drainage pipe is not desired. See the
table for the appropriate OD.
NOTE: The AGD is designed to support its own weight and
two feet of straight pipe. Additional pipe or the use of bends
or elbows which induce any side load or bending requires pipe
hangers for support.
Loading...