Watts AMES Deringer 20X Manuale utente

Installation, Operation and

Maintenance Manual

IOM-A-Deringer 20/20X/30/30X_6-8

Deringer™20/20X/30/30X

Double Check Valve/Double

Check Detector Assemblies

Size: 20/30: 6"&8"

20X/30X: 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

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 Ratchet

Adjustable Wrench Deringer Test Cock Wrench Slip-joint Pliers

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 Deringer 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 30/30X 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 30/30X 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.

Closing Shutoff Valves Prior to Maintenance

1. Slowly rotate shutoff valve #2 handle clockwise to the closed

position. Flag perpendicular to flow (A).

2. Slowly rotate shutoff valve #1 handle 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 (B). 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

Opening Test Cocks and Bleeding All Pressure

from the Line Before Maintenance

FLOW

ClosedOpen

Bypass Test CockMain Test Cock

Closed Open Closed Open

Removing Access Port Cover Plate

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). B

Removing the First Dual-actionTM Check Module

FLOW

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.

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

Deringer 30/30X: Disassembly and Maintenance of Bypass Check Valve

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.

Part 2

1. To replace a damaged red silicone poppet disk, use a #2 phil-

lips 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.

Deringer 30/30X: 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 flat head screw driver open bypass test cock

#2 (D) and then open bypass test cock #1 (C). (Test cock is

open when screw driver 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.

FLOW

Maintenance of First Dual-action Check Module

1. Use a #2 phillips head screwdriver to remove tower

screws (A) from the first check seat (B). The double torsion

spring (C) is captured 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).

NOTICE First Check Tower Bosses and Spring Arms Face Up

Orient seat protrusions as shown

Tower Bosses

Spring Arms

The diagram on the right shows the correct orientation of the

first 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.

Maintenance of Second Dual-action Check Module

1. Phillips head screwdriver to remove tower screws (A) from

the second check seat (B). The double torsion spring (C)

is captured 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).

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.

Maintenance of First Dual-action Check Module (continued)

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) has 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

Not BindingBinding

FLOW

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). Without

using excessive force, push the 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

Not BindingBinding

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 tapered washers (E), flat side facing up, and cover bolts (D) 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 4center cover bolts (D) alternating

from one side of the valve to the other. Then tighten the 4corner bolts

alternating from one side of the valve to the other.

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 2, 3, and 4 (A). (Test

cock is closed when wrench flats on stem are perpendicular

to water flow through test cock).

2. Deringer 30/30X: 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 30/30X: Bypass check valve cover is

tightened (F)

• Deringer 30/30X: Bypass meter coupling nuts

are tightened (G)

FLOW

Open

Closed

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