background image

3

Series 909/LF909

Reduced Pressure Zone Backflow Preventer

2

1

2

" to 10"

909QT shown

909NRS shown

009QT shown

Test Cock 

No. 1

Test Cock 

No. 2

Test Cock 

No. 3

Test Cock 

No. 4

Shutoff 

No. 1

Shutoff 

No. 2

Check Valve 

No. 2

Check Valve 

No. 1

Pressure Differential Relief 

Valve

Pressure Differential Relief 

Valve

Pressure Differential Relief 

Valve

Gate Valve 

Shutoff 

No. 1

Gate Valve 

Shutoff 

No. 2

Test cock 

No. 3

Test cock 

No. 4

Test cock 

No. 1

Test cock 

No. 2

Air Vent

Test cock 

No. 3

Test cock 

No. 4

Shutoff 

No. 1

Test cock 

No. 2

Shutoff 

No.2

Test cock 

No. 1

Series 009/LF009

Reduced Pressure Zone Backflow Preventer

1

4

" to 2"

Series 909/LF909

Reduced Pressure Zone Backflow Preventer

1

1

4

" to 2"

Summary of Contents for TK-9A

Page 1: ...ce dual scale 0 15 psid and 0 1 kg cm2 2 accuracy full scale Test Valves 2 ball valves and 1 needle valve Hoses 3 3 with female threaded swivel couplings Adaptors 3 1 4 threaded coupling adaptors 3 1 2 x 1 4 bushings 3 3 4 x 1 4 bushings 1 16 securing strap 1 Moisture resistant instruction guide Case light weight shock resistant molded plastic with foam inserts WARNING This product contains chemic...

Page 2: ...e to Test No 2 by closing test cock 2 The indicated pressure differential will decrease slightly If pressure differential continues to decrease approaching zero shutoff 2 is reported to be leaking Test No 3 Purpose To test Check Valve No 1 for tightness Requirements Valve must be tight against reverse flow under all pressure differentials Close high valve A and open test cock 2 Close test cock 4 D...

Page 3: ...re Differential Relief Valve Pressure Differential Relief Valve Pressure Differential Relief Valve Gate Valve Shutoff No 1 Gate Valve Shutoff No 2 Test cock No 3 Test cock No 4 Test cock No 1 Test cock No 2 Air Vent Test cock No 3 Test cock No 4 Shutoff No 1 Test cock No 2 Shutoff No 2 Test cock No 1 Series 009 LF009 Reduced Pressure Zone Backflow Preventer 1 4 to 2 Series 909 LF909 Reduced Pressu...

Page 4: ...est Cock No 4 Test Cock No 1 Test Cock No 2 709NRS Shown 1 007 shown IS TK 9A 1323 EDP 0834222 2013 Watts USA Tel 978 688 1811 Fax 978 794 1848 www watts com Canada Tel 905 332 4090 Fax 905 332 7068 www watts ca Limited Warranty Watts Regulator Co 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 origi...

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