Watts AMES Deringer 40 User manual

Installation, Operation and
Maintenance Manual
IOM-A-Deringer 40/40X/50/50X_6-8
Deringer™40/40X/50/50X
Reduced Pressure Zone/
Reduced Pressure Detector Assemblies
Size: 40/50: 6"&8"
40X/50X: 4"&6"
WARNING
!
Read this manual BEFORE using this equipment.
Failure to read and follow all safety and use information can
result in death, serious personal injury, property damage, or
damage to the equipment.
Keep this manual for future reference.
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
WARNING
!

2IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
This list is the recommended tools for installation. Other
versions of the same tool can be used. For example, allen
wrenches instead of allen drive sockets.
Tools Required
15/16" Socket
11/8" Socket
Wood Block 2" x 4" x 5"
Wood Block 1" x 2" x 16"
#2 Phillips Head Screwdriver #2 Flathead Screwdriver 5/8" Ratchet Wrench
7/16" Ratchet Wrench (x2)
9/16" Ratchet Wrench
Adjustable Wrench Deringer Test Cock Wrench Slip-joint Pliers
Toothbrush

3
IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Closing Shutoff Valves Prior to Maintenance
1. Slowly rotate shutoff valve #2 handle (C) clockwise to the
closed position. Flag perpendicular to flow (A).
2. Slowly rotate shutoff valve #1 handle (B) clockwise to the
closed position. Flag perpendicular to flow (A).
NOTICE
When yellow/orange position indicator flags are parallel with the flow of water
the shutoff valves are in the open position. Before doing any maintenance be
sure the yellow or orange flow indicators (flags) are perpendicular to the flow
of water valve body indicating shutoff valves are in the closed position (A).
FLOW
FLOW
B
A
A
C
A
Opening Test Cocks and Bleeding All Pressure
from the Line Before Maintenance
NOTE: valve is still under pressure. When opening test cocks,
water will be released. Take precautions to ensure discharging
water does not damage the surrounding area/equipment or
create an unsafe condition.
1. DO NOT OPEN Main test cock number 1, as it is still
subject to line pressure.
2. Using the DeringerTM test cock wrench or a small
adjustable wrench open (A) main test cock number 4.
(Test cock is open when wrench flats are parallel to water
flow through test cock).
3. Deringer 50/50X only: using a #2 flathead screwdriver open
bypass test cock number 2. (Test cock is open when screw-
driver slot is parallel to water flow through test cock (B)).
4. Using the Deringer test cock wrench or a small adjustable
wrench open main test cock number 3.
5. Deringer 50/50X only: using a #2 flathead screwdriver open
bypass test cock number 1.
6. Using the Deringer test cock
wrench or a small adjustable
wrench open main test
cock number 2.
FLOW
BB
A
A
Shut-off Valve (SOV)
Number 1
Shut-off Valve (SOV)
Number 2
Bypass Test CockMain Test Cock
Closed Open Closed Open

4IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Removing Access Port Cover Plate
C
D
1. Using a 15/16" socket wrench loosen all eight bolts
on the access port cover plate (A).
2. Remove bolts and tapered washers (B) and store in
a safe place. Be careful not to lose tapered washers
as the access cover will not seal properly without
the tapered washers.
3. Remove access port cover plate (C). Do not remove
access port O-ring (D).
A
B
Removing the First Dual-actionTM Check Module
FLOW
C
A
1. Use a 15/16" socket wrench to loosen the check
retainer bolts on both sides of the valve body (A).
Do not completely remove check retainer bolts from
valve body. Loosen the bolts until the ends of the
bolts are flush with the inner wall of the valve body
(B).
2. Insert a flathead screwdriver between the inner valve
body and the first check module flange (C), gently
push the first check module in the downstream
direction until the first check module can easily be
removed from the access port by hand.
B
Removing the Second Dual-action Check Module
1. Use a 11/8" socket wrench to loosen the check retainer
bolts on each side of the valve body (A). Do not
completely remove check retainer bolts from valve
body. Loosen the bolts until the ends of the bolts are
flush with the inner wall of the valve body (B).
2. Insert a flathead screwdriver between the inner valve
body and the second check module flange (C),
gently push the second check module in the
upstream direction until the second check module
can easily be removed from the access port by hand.
FLOW
C
B
A

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IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Deringer 50/50X: Disassembly and Maintenance of Bypass Check Valve
A
C
B
A
D
Part 1
1. Use an adjustable wrench to rotate check cover (A) counterclockwise
to remove.
2. Examine cover plate O-ring (B) for damage or fouling.
3. Remove spring (C).
4. Remove check poppet assembly (D) and examine for damage
or fouling.
5. Examine seat cage, located inside the bypass check valve body,
for damage or fouling to the sealing seat. Do not remove unless
the seat cage is being replaced.
6. Reverse the order of above instructions to reassemble bypass
check valve.
A
Part 2
1. To replace a damaged red silicone poppet disk, use a #2 phillips
head screwdriver to remove the disk retaining screw (A).
2. Remove disk retaining washer (B).
3. Use a flathead screwdriver to remove the gasket from
poppet cavity (C).
4. Install new red silicone poppet disk (D).
5. Reverse the order of the above instructions to reassemble
check poppet assembly.
6. Reverse the order of the instructions on the previous page to
reassemble bypass check assembly.
A
AC
B
D

6IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Deringer 50/50X: Removing Bypass Meter
1. Using the ball valve handles close the #2 bypass ball valve
(B) and then #1 bypass ball valve (A). (Ball valve is closed
when “T” handle is perpendicular to water flow through
ball valve).
2. Using a #2 flathead screwdriver open bypass test cock #2
(D) and then open bypass test cock #1 (C). (Test cock is
open when screwdriver slot is parallel to water flow through
test cock).
3. Using large adjustable pliers or a wrench, unscrew and
retract bypass meter coupling nuts (E). Remove the gaskets
(F) on both sides of bypass meter.
4. Gently remove bypass meter (G) from line. It is OK if the
bypass fittings move slightly during the removal process.
5. Reverse order of above instructions to reinstall bypass
meter. Remember to install gaskets (F) before threading
meter coupling nuts into place.
B
C
E
E
GF
E
FLOW
DA
Maintenance of First True Seal Check Module
1. Use a #2 phillips head screwdriver to remove tower screws
(A) from the first check seat (B) the double torsion spring
is captured (C) and does not need to be retained
during maintenance.
2. After removing the tower screws (A) examine the elastomer
disk (D) and check seat (E) for fouling or damage.
3. Should elastomer disk (D) need replacement unscrew disk
retainer screws (F) and remove disk retainer (G). Carefully remove
and replace elastomer disk (D). When replacing elastomer disk
(D) be certain that no air, water or debris is trapped in the
clapper (H) cavity behind the elastomer disk (D).
4. Reverse the order of the above instructions to reassemble
check.
• Elastomer disk must be flat in clapper (H) cavity before
tightening disk retainer screws (F).
• Do not cross thread disk retaining screws (F).
• Check orientation is not important when reattaching the
check to the first check seat.
F
G
D
B
AH
C
DE
C

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IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Maintenance of Second Dual-action Check Module
1. Use a #2 phillips head screwdriver to remove tower screws
(A) from the second check seat (B) the double torsion
spring is captured (C) and does not to be retained
during maintenance.
2. After removing the tower screws (A) examine the elastomer
disk (D) and check seat (E) for fouling or damage.
3. Should elastomer disk (D) need replacement unscrew disk
retainer screws (F) and remove disk retainer (G). Carefully
remove and replace elastomer disk (D). When replacing
elastomer disk (D) be certain that no air, water or debris is
trapped in the clapper (H) cavity behind the elastomer disk (D).
4. Reverse the order of the above instructions to reassemble check.
• Elastomer disk must be flat in clapper (H) cavity before
tightening disk retainer screws (F).
• Do not cross thread disk retaining screws (F).
F
G
D
H
B
CA
E
D
NOTICE Second Check Tower Bosses and Spring Arms Face Down
Orient seat protrusions as shown
Tower Bosses
Spring Arms
The diagram on the right shows the correct orientation of the
second dual-action check module when being re-attached to
the seat. In order to maintain the performance of the valve pay
attention to the proper orientation of the check module.

8IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Installing Second Dual-action Check Module
1. Insert second check module (A) into access port (B) with second
check towers (C) pointing downstream. Push second check module
(A) downstream into valve sealing ring (D) until check O-ring (E) rests
against valve sealing ring (D). Push second check module (A) into its
fully seated position by hand.
2. Alternatively place 2"x4" piece of wood cut to 5" length (F) against
the backside of the second check seat ring (G). Using a 1"x4" piece
of wood cut to 16" length (H) as a lever between access port wall the
2"x4" (F) gently move the second check module (A) into its fully
seated position.
3. Be certain second check module (A) is fully seated and check O-ring
(E) is NOT “fish mouthed” or damaged.
4. Tighten the second check retaining screws (I) ONLY AFTER the first
check module (A) as been installed.
The second check module must be fully seated to ensure
retainer screws do not bind against check seat. Binding
retainer screws against check seat will result in permanent
damage to second check modules.
WARNING
!
FLOW
C
D
A
B
G
Not BindingBinding
I
H
F
E

9
IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Installing First Dual-action Check Module
1. Insert first check module (A) into access port (B) with first check
towers (C) pointing downstream. Push first check module (A)
upstream into valve sealing ring (D) until check O-ring (E) is
resting against valve sealing ring (D). Push first check module
(A) into its fully seated position by hand.
2. Alternatively, using a piece of 1"x4" wood cut to 16" length
(F) as a lever between the second check seat (G) and the first
check towers (C), push the first check module (A) into its fully
seated position.
3. Be certain first check module (A) is fully seated and check
O-ring (E) is NOT “fish mouthed” or damaged.
4. Now fully tighten the first and second check retaining screws (I).
The first check module must be fully seated to ensure
retainer screws do not bind against check towers. Binding
retainer screws against check towers will result in permanent
damage to first check modules.
WARNING
!
FLOW
Not BindingBinding
C
A
B
E
F
G
D
I
NOTICE
Typically, when a RP device is leaking from the relief valve, a fouled
or damaged first check valve is the cause. Make sure the first check
valve is functioning properly before assuming there is a problem with
the relief valve. If the first check is found to be functioning properly,
we recommend cleaning the relief valve piston (B) and seat (C). Use
a toothbrush (A) to gently brush away any debris on the relief valve
piston (B) or seat (C) that may be preventing the piston (B) from seal-
ing properly against the seat (C). This should return the relief valve to
proper working order without disassembly or the use of a repair kit.
Maintenance of Relief Valve
A
B
C

10 IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Maintenance of Relief Valve
B
A
E
1. Using a 5/8" box wrench disconnect the relief valve sensing
line from the valve body (A).
2. To remove the relief valve from the valve body disconnect
the two relief valve mounting bolts (B) using a 9/16" wrench.
When removing the relief valve be sure not to drop the top
O-ring (C) as the relief valve body uses this O-ring to seal
against the valve body.
3. To access the relief valve remove the relief valve cover using
two 7/16" wrenches to remove cover bolts (D).
4. Remove the relief valve diaphragm (E) and check the
diaphragm for tears, holes or debris (F).
C
NOTICE
If one is certain that the relief valve requires maintenance proceed as follows.
F
DD
Maintenance of Relief Valve (continued)
B
D
1. Check the rubber seal on the relief valve piston assembly (A) for
fouling or damage by making sure the indentation of the seat in
the rubber seal is present all the way around. (Confirm the relief
valve piston assembly (A) sets flush on relief valve seat (B).
2. Check relief valve seat (B) for fouling or damage before
reinstalling the relief valve piston assembly (A).
3. Once the relief valve is ready to be reassembled, the first step is
to reform and reattach the diaphragm to the piston.
4. Move the diagram (C) to the fully open position making sure the
embossed center is facing up.
5. While holding the diaphragm (C) with both hands, use your
thumbs to gently push down on embossed center (D) so the
diaphragm collapses into itself and forms a circle so that the
bottom of the piston assembly can be inserted into the
diaphragm and the embossed center can be pushed into
the piston assembly groove.
C
A

11
IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Maintenance of Relief Valve (continued)
1. Place the piston assembly (A) into the diaphragm (B), making sure the
diaphragm lays flush on the bottom of the piston assembly with no
wrinkles or tears in the diaphragm.
2. Place the relief valve spring (C) back onto the relief valve assembly (A)
and slide the valve assembly back into the relief valve body (D). Make
sure the piston assembly lines up to penetrate hole (E) in top side of
relief valve.
B
A
E
D
C

12 IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Maintenance of Relief Valve (continued)
D
1. Using two 7/16" wrenches (A) re-attach the relief valve cover.
2. Making sure the relief valve O-ring (B) is in the groove on the top
of the relief valve use a 9/16" wrench to re-attach the two relief
valve mounting bolts (C).
3. Use a 5/8" box wrench re-connect the relief valve sensing line to
the valve (D).
C
A
B
A
Pitot Tube Orientation
1. Before reinstalling the relief valve after maintenance, check to make sure
the pitot tube (A) is in the proper orientation. If the pitot tube is NOT in
the proper orientation the relief valve WILL LEAK OR DUMP during
flow conditions.
2. The inlet port of the pitot tube (B) at the top of the pitot tube must face
directly UPSTREAM toward the #1 shutoff valve. Proper orientation can
be confirmed visually by removing the main line valve cover and first
check valve (see right).
3. Note that the inlet port of the pitot tube (B) is not visible because it is
facing directly upstream toward the #1 shutoff valve.
4. A dimple (C) has been provided on the hex wrench portion of the pitot
tube in order to visually confirm the proper orientation of the pitot tube
from the OUTSIDE of the valve (see right). Note that the dimple (C) is on
the same side of the pitot tube as the inlet port of the pitot tube (B) (see
above).
5. From the OUTSIDE of the valve the dimple (C) must face directly
UPSTREAM toward the #1 shutoff valve. If the dimple (C) of the pitot
tube is NOT in the oriented UPSTREAM the relief valve WILL LEAK OR
DUMP during flow conditions
A
C
B
C
FLOW
Upstream

13
IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Installing Access Port Cover
1. It is best to never remove the access port O-ring (A). Should the
access port O-ring (A) become dislodged, simply insert it back into
access port groove (B).
2. Slide the access port cover (C) into place being certain that access
port O-ring (A) does not become dislodged during the process.
3. Insert cover bolts (D) and tapered washers (E), flat side facing up, into
tapered cover holes (F). Tapered washers (E) must be properly installed
or the access port cover (C) will not seal under pressure.
4. Use 15/16" socket wrench (G) to tighten the 4 center cover bolts (D)
alternating from one side of the valve to the other. Then tighten the four
corner bolts alternating from one side of the valve to the other. B
E
C
FD
A
G

14 IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Close Test Cocks and Double Check All Closing/Sealing Mechanisms
1. Using the Deringer test cock wrench or a small adjustable
wrench close main test cocks number 1, 2 and 3 (A). (Test
cock is closed when wrench flats on stem are perpendicular
to water flow through test cock)
2. Deringer 50/50X: Using a #2 flathead screwdriver close
bypass test cock number 1 and 2 (B). (Test cock is closed
when screwdriver slot on stem is perpendicular to water flow
through test cock)
3. Use the “T” handles to open bypass ball valve number 1 (D)
and then open bypass ball Valve number 2 (C). (Ball valve is
open when “T” handle is parallel to water flow through
ball valve)
4. Double check to be certain of the following:
• All cover bolts are tightened (E)
• Deringer 50/50X: Bypass check valve cover is
tightened (F)
• Deringer 50/50X: Bypass meter coupling nuts are
tightened (G)
FLOW
A
A
B
B
C
E
F
G
D
Closed
Closed
Open
Open

15
IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Open Shutoff Valves to Make Backflow Preventer Functional
1. Slowly rotate the number 1 shutoff valve operation handle (A)
counterclockwise to the open position. (Shutoff valve is open
when yellow/orange position indicator flags are parallel to
the mainline water flow).
2. Slowly rotate the number 2 shutoff valve operation handle
(B) counterclockwise to the open position.
FLOW
C
C
B
NOTICE
Yellow/orange position indicator flags must be parallel to
mainline water flow for backflow valve to be functional (C).
A

16 IOM-A-Deringer 40/40X/50/50X_6-8 2005 EDP#2916006 © 2020 Watts
Limited Warranty: Ames Fire & Waterworks (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date
of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER
WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special
or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from
labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the
above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to
determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.
USA: Backflow T: [phone] • F: [phone] • AmesFireWater.com
USA: Control Valves T: [phone] • F: [phone] • AmesFireWater.com
Canada: T: [phone] • F: [phone] • AmesFireWater.ca
Latin America: T: (55) 4122-0138 • AmesFireWater.com
Step 1: Using wire cutters, cut the wires coming out of the
gearbox as close to the gearbox as possible.
Step 2: Use a piece of thread seal tape to seal the threads on a
½" NPT plug
Step 3: Using an allen wrench, install and tighten the ½" NPT
plug into the same threaded hole where the wires were
previously cut.
NOTICE
If a Deringer is going to be installed outdoors and the tamper switches will not
be wired into the fire alarm system, the wires will need to be cut and a plug
will need to be installed to protect the internal components of the gearbox.