Watts Series 709 Скачать руководство пользователя страница 1 | Manualshive

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Watts Series 709 Скачать руководство пользователя страница 1

Series
709/709DCDA

Double Check Valve Assemblies
Double Check Detector
Assemblies

Sizes:

3

⁄

4

" – 10" (20-250mm)

RP/IS-709/709DCDA

Watts 8" (200mm) 709 OS&Y shown

• Installation

• Service

• Repair Kits • Maintenance

For field testing procedure, send for IS-TK-DP/DL,
IS-TK-9A, IS-TK-99E AND IS-TK-99D.

For other repair kits and service parts, send for
PL-RP-BPD.

For technical assistance, contact your local Watts repre-
sentative on back page.

IMPORTANT:

Inquire with governing authorities for local

installation requirements.

NOTE:

For Australia and New Zealand, line strainers

should be installed between the upstream shutoff valve
and the inlet of the backflow preventer.

Its important that this device be tested periodically in
compliance with local codes, but at least once per
year or more as service conditions warrant. If
installed on a fire sprinkler system, all mechanical
checks, such as alarm checks and backflow preven-
ters, should be flow tested and inspected internally
in accordance with NFPA 13 and NFPA 25.

RP-IS-709_709DCDA.indd 1

9/26/08 2:28:13 PM

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Содержание Series 709

Страница 1: ... sentative on back page IMPORTANT Inquire with governing authorities for local installation requirements NOTE For Australia and New Zealand line strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer Its important that this device be tested periodically in compliance with local codes but at least once per year or more as service conditions warrant ...

Страница 2: ... it is important that the valve be easily accessible to facilitate testing and servicing Outdoor Installations In area where freezing conditions do not occur Series709canbeinstalledoutsideof abuilding Themostsatisfactoryinstallation is above ground and should be installed in this manner whenever possible Itisgenerallyrecommendedthatbackflow preventers never be placed in pits unless absolutely nece...

Страница 3: ... Test 6 Close shutoff valve No 2 then No 1 7 Slowly open VA and lower high side pressure about 2 psid below the low side pressure differential read ing about 2 0 psid Close VA If reading is maintained record as tight If reading returns to 0 and the pressure A increases to pressure B the check is recorded as leaking If the reading returns to psid No 2 shutoff valve is leaking excessively and must b...

Страница 4: ... RK 709 C2 11 2 2 32 50 Kit includes Cover and Cover o ring Stainless Steel 1 After removing the cover screw the check comes out with the cover 2 Holding the check Valve module in both hands rotate the assembly 1 4 turn This will disengage the disc and spring assembly into individual components The disc assembly may be cleaned or replaced O rings should becleanedorreplacedasnecessaryandlightlygrea...

Страница 5: ...er O ring Complete Rubber Parts 0887915 RK 709 RT 21 2 3 65 80 0887916 RK 709 RT 4 100 0887917 RK 709 RT 6 150 0887918 RK 709 RT 8 200 0887919 RK 709 RT 10 250 Kit includes Two discs and Two Cover O rings Seat Kits 0887910 RK 709S 21 2 3 65 80 0887911 RK 709S 4 100 0887912 RK 709S 6 150 0887913 RK 709S 8 200 0887914 RK 709S 10 250 Kit includes Seat Seat o ring Retainer Wire and Cover O ring Cover ...

Страница 6: ...s vent Installed At All cross connections subject to backpressure or back siphonage where there is a high potential health contamination Continuous pressure Fire protection system supply main Detects leaks and unauthorized use of water All cross connections subject to backpressure or back siphonage where there is a low potential health contamination Continuous pressure Fire protection system suppl...

Страница 7: ...emble clean or replace check open e Weak or broken spring Disassemble and replace spring 2 Chatter during ﬂow a Worn damaged or Disassemble and repair or conditions defective guide replace guide 3 Low ﬂows passing a Mainline check fouled Disassemble and clean through mainline valve 709DCDA only b Meter strainer plugged Disassemble and clean c Damaged mainline seat Disassemble and replace disc or s...

Страница 8: ...r 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 condi...

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