Watts LF919 User Manual download pdf

Installation, Maintenance, & Repair

Series 919 and LF919

Reduced Pressure Zone Assemblies

Sizes:

⁄4" – 2" (8 – 50mm)

919QT

RP/IS-919

You are required to thoroughly read all installation instructions

and product safety information before beginning the installa-

tion of this product. FAILURE TO COMPLY WITH PROPER

INSTALLATION AND MAINTENANCE INSTRUCTIONS

COULD RESULT IN PRODUCT FAILURE WHICH CAN

CAUSE PROPERTY DAMAGE, PERSONAL INJURY AND/

OR DEATH. Watts is not responsible for damages resulting

from improper installation and/or maintenance.

Local building or plumbing codes may require modifications to

the information provided. You are required to consult the local

building and plumbing codes prior to installation. If this informa-

tion is not consistent with local building or plumbing codes, the

local codes should be followed.

Need for Periodic Inspection/Maintenance: This product

must be tested periodically in compliance with local codes, but

at least once per year or more as service conditions warrant.

Corrosive water conditions, and/or unauthorized adjustments

or repair could render the product ineffective for the service in-

tended. Regular checking and cleaning of the product’s internal

components helps assure maximum life and proper product

function.

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 assembly be tested periodically in compli-

ance 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.

WARNING

Testing

For field testing procedure, send for IS-TK-DL, IS-TK-7,

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

representative.

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Summary of Contents

Page 1 - Series 919 and LF919

Installation, Maintenance, & Repair Series 919 and LF919Reduced Pressure Zone AssembliesSizes: 1⁄4" – 2" (8 – 50mm)919QTRP/IS-919You are

Page 2 - Installation Instructions

2Installation InstructionsSeries 919 and LF9191⁄4" – 2" (8 – 50mm)Air GapStrainerReduced Pressure Zone Assemblies Indoor InstallationFor ind

Page 3

3WARNING:Do not allow the drain line to empty directly into a drainage ditch, sewer system, or sump.NOTE: Relief Valve Discharge RatesThe Series 919 a

Page 4 - Servicing the Relief Valve

4NOTES: 1. No special tools are required to service the Series 919 and LF919 1⁄4" - 2". 2. Before servicing, make sure the water is turne

Page 5

5Servicing the Relief ValveSeries 919 and LF9191⁄4" – 2" (8 – 50mm)Quad-RingRelief Valve Cover O-ringDiaphragm NutRelief Valve DiaphragmReli

Page 6

6Servicing First & Second Check ValvesSeries 919 and LF9191⁄4" – 2" (8 – 50mm)NOTES: 1. No special tools are required to service the Se

Page 7 - Check Valve Kits

7*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.Servicing First & Second Check Valve

Page 8 - Troubleshooting Guide

Watts LF919 User Manual

Browse online or download User Manual for Accessories for water Watts LF919. Watts LF919 User Manual

Summary of Contents

Related models: 919

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Comments to this Manuals

Watts LF919 User Manual

Browse online or download User Manual for Accessories for water Watts LF919. Watts LF919 User Manual

Summary of Contents

Related models: 919

More documents for Accessories for water Watts LF919

Comments to this Manuals

Related products and manuals for Accessories for water Watts LF919