Watts

Model

LF919

Description
Specification
Parts Breakdown

The Watts LF919 is a reduced pressure assembly (RPA). It is available in 1/2″-2″ sizes and has been in production since 2009. The body is made of bronze.

Spec Sheet

Parts Breakdown

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product
Inlet Shutoff Valve

Part #: 2065585
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product
Inlet Shutoff Valve

Part #: 2065584
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product
Inlet Shutoff Valve

Part #: 2065583
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product
Inlet Shutoff Valve

Part #: 2065582
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Inlet Shutoff Valve

Part #: 2065581
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2″ LF919 w/QT

Part #: 919LF-2
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1 1/2″ LF919 w/QT

Part #: 919LF-15
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Air Gap

Part #: 881577
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1 1/4″ LF919 w/QT

Part #: 919LF-12
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1″ LF919 w/QT

Part #: 919LF-1
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Air Gap

Part #: 881576
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3/4″ LF919 w/QT

Part #: 919LF-7
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1/2″ LF919 w/QT

Part #: 919LF-5
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2″ x Close LF Brass Nipple

Part #: NBR08CL
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2″ LF Brass Wye Strainer w/Plug

Part #: 145T08LF
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1 1/2″ x Close LF Brass Nipple

Part #: NBR07CL
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1 1/2″ LF Brass Wye Strainer w/Plug

Part #: 145T07LF
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product
1 1/4″ x Close LF Brass Nipple

Part #: NBR06CL
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1 1/4″ LF Brass Wye Strainer w/Plug

Part #: 145T06LF
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product
1″ x Close LF Brass Nipple

Part #: NBR05CL
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1″ LF Brass Wye Strainer w/Plug

Part #: 145T05LF
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product
3/4″ x Close LF Brass Nipple

Part #: NBR04CL
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product
3/4″ LF Brass Wye Strainer w/Plug

Part #: 145T04LF
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product
3/4″ Thread Sealant Tape

Part #: TF-7
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1/2″ Thread Sealant Tape

Part #: TF-5
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1/2″ x Close LF Brass Nipple

Part #: NBR03CL
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product
1/2″ LF Brass Wye Strainer w/Plug

Part #: 145T03LF
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product
Cover Kit

Part #: 794148
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product
Seat Kit

Part #: 888129
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1st or 2nd Check Rubber Rebuild

Part #: 888124
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2nd Check Assembly

Part #: 888119
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1st Check Assembly

Part #: 888114
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Complete Rubber Rebuild

Part #: 888144
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product
Complete Internal Parts Kit

Part #: 888171
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product
Outlet Shutoff Valve

Part #: 2065577
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product
Shutoff Valve

Part #: 2065585
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product
Outlet Shutoff Valve

Part #: 2065576
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product
Shutoff Valve

Part #: 2065584
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product
Relief Valve Cover

Part #: 794143
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product
Relief Valve Seat

Part #: 888153
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product
Cover Kit

Part #: 794147
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product
Seat Kit

Part #: 888128
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product
Relief Valve Rubber Rebuild

Part #: 888137
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product
1st or 2nd Check Rubber Rebuild

Part #: 888123
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Relief Valve Assembly

Part #: 888132
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product
2nd Check Assembly

Part #: 888118
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1st Check Assembly

Part #: 888113
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Complete Rubber Rebuild

Part #: 888143
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product
Complete Internal Parts Kit

Part #: 888170
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product
Outlet Shutoff Valve

Part #: 2065575
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product
LF Test Cock (1/4″ x 1/4″)

Part #: TCSLF-14
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product
Shutoff Valve

Part #: 2065583
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product
Cover Kit

Part #: 794146
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product
Seat Kit

Part #: 888127
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product
1st or 2nd Check Rubber Rebuild

Part #: 888122
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product
2nd Check Assembly

Part #: 888117
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product
1st Check Assembly

Part #: 888112
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product
Complete Rubber Rebuild

Part #: 888142
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product
Complete Internal Parts Kit

Part #: 888169
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product
Outlet Shutoff Valve

Part #: 2065574
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product
Shutoff Valve

Part #: 2065582
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product
Relief Valve Cover

Part #: 794142
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product
Relief Valve Seat

Part #: 888151
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product
Cover Kit

Part #: 794145
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product
Seat Kit

Part #: 888126
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product
1st or 2nd Check Rubber Rebuild

Part #: 888121
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product
Relief Valve Rubber Rebuild

Part #: 888136
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product
Relief Valve Assembly

Part #: 888131
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product
2nd Check Assembly

Part #: 888116
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product
1st Check Assembly

Part #: 888111
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product
Complete Rubber Rebuild

Part #: 888141
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product
Complete Internal Parts Kit

Part #: 888168
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product
Outlet Shutoff Valve

Part #: 2065573
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product
Shutoff Valve

Part #: 2065581
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product
Relief Valve Cover

Part #: 888164
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product
Relief Valve Seat

Part #: 888150
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product
Cover Kit

Part #: 794144
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product
Seat Kit

Part #: 888125
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product
Relief Valve Rubber Rebuild

Part #: 888135
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product
1st or 2nd Check Rubber Rebuild

Part #: 888120
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product
Relief Valve Assembly

Part #: 888130
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2nd Check Assembly

Part #: 888115
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product
1st Check Assembly

Part #: 888110
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product
Complete Rubber Rebuild

Part #: 888140
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product
Complete Internal Parts Kit

Part #: 888167
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product
Backflow Preventer Repair Manual

Part #: BFCAT
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product
LF Test Cock (1/8″ x 1/4″)

Part #: TCSLF-18
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product
Outlet Shutoff Valve

Part #: 2065572
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product
Inlet Shutoff Valve

Part #: 2065580
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Watts

LF919

Select

Inlet Shutoff Valve

Inlet Shutoff Valve

Inlet Shutoff Valve

Inlet Shutoff Valve

Inlet Shutoff Valve

2″ LF919 w/QT

1 1/2″ LF919 w/QT

Air Gap

1 1/4″ LF919 w/QT

1″ LF919 w/QT

Air Gap

3/4″ LF919 w/QT

1/2″ LF919 w/QT

2″ x Close LF Brass Nipple

2″ LF Brass Wye Strainer w/Plug

1 1/2″ x Close LF Brass Nipple

1 1/2″ LF Brass Wye Strainer w/Plug

1 1/4″ x Close LF Brass Nipple

1 1/4″ LF Brass Wye Strainer w/Plug

1″ x Close LF Brass Nipple

1″ LF Brass Wye Strainer w/Plug

3/4″ x Close LF Brass Nipple

3/4″ LF Brass Wye Strainer w/Plug

3/4″ Thread Sealant Tape

1/2″ Thread Sealant Tape

1/2″ x Close LF Brass Nipple

1/2″ LF Brass Wye Strainer w/Plug

Cover Kit

Seat Kit

1st or 2nd Check Rubber Rebuild

2nd Check Assembly

1st Check Assembly

Complete Rubber Rebuild

Complete Internal Parts Kit

Outlet Shutoff Valve

Shutoff Valve

Outlet Shutoff Valve

Shutoff Valve

Relief Valve Cover

Relief Valve Seat

Cover Kit

Seat Kit

Relief Valve Rubber Rebuild

1st or 2nd Check Rubber Rebuild

Relief Valve Assembly

2nd Check Assembly

1st Check Assembly

Complete Rubber Rebuild

Complete Internal Parts Kit

Outlet Shutoff Valve

LF Test Cock (1/4″ x 1/4″)

Shutoff Valve

Cover Kit

Seat Kit

1st or 2nd Check Rubber Rebuild

2nd Check Assembly

1st Check Assembly

Complete Rubber Rebuild

Complete Internal Parts Kit

Outlet Shutoff Valve

Shutoff Valve

Relief Valve Cover

Relief Valve Seat

Cover Kit

Seat Kit

1st or 2nd Check Rubber Rebuild

Relief Valve Rubber Rebuild

Relief Valve Assembly

2nd Check Assembly

1st Check Assembly

Complete Rubber Rebuild

Complete Internal Parts Kit

Outlet Shutoff Valve

Shutoff Valve

Relief Valve Cover

Relief Valve Seat

Cover Kit