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    IS-PLT

Models: PLT-5, PLT-12

Potable Hot Water Expansion Tank

Installation Instructions

Support Tank in Optional
Horizontal Position

Optional Location

To System

Expansion 
Tank

Optional Location

Water 

Heater

Water
Supply

Watts
Backfl ow
Preventer

Watts Pressure Gauge

Watts
T&P Safety
Relief Valve

Discharge Line

Floor Drain

Listed by IAPMO

Technical Information

DESCRIPTION

PLT-5 ORDER

CODE 0067370

PLT-12 ORDER 

CODE 0067371

Max. Pressure - psi

150

150

Max. Temp. - °F

200ºF

200ºF

Tank Volume - Gal.

2.1

4.5

Tank Acceptance - Gal.

1.26

1.26

Air Pre-charge - psi

20

20

Connections Size - In.

3

4

" Male

3

4

" Male

Diameter - In.

8

10

1

2

Length - In.

11

13.5

Weight - lbs.

5.5

10.0

Acceptance Volume

AIR SIDE PRE-PRESSURE

WATER SIDE VOLUME AT 150 (10.3 bar)

(psi)

(bar)

(gal.)

(liter)

(gal.)

(liter)

PT-5

PT-12

20

(1.4)

1.48

(5.6)

3.42

(12.9)

40

(2.8)

1.26

(4.8)

2.88

(10.9)

60

(4.1)

1.0

(3.8)

2.49

(9.4)

80

(5.5)

.80

(3.0)

1.85

(7.0)

 

!

 

W A R N I N G !

Improper installation, adjustment, alteration, service or maintenance 
can cause property damage, serious bodily injury or death. Read 
instructions completely before proceeding with installation. Only 
qualified personnel may install or service this equipment in accor-
dance with local codes and ordinances.

This Expansion Tank is designed and intended for water storage at 
a maximum pressure of 150psi (10.3 bar). A maximum instantaneous 
pressure in excess of 150psi (10.3 bar) or 200°F (93ºC) is 

UNSAFE

 

and can cause property damage, serious bodily injury or result
in death.

Do not exceed 80psi (5.5 bar) air charge. Air charge pressures 
exceeding 80psi (5.5 bar) could become hazardous and will void any 
and all warranties, either written or implied. Failure to follow these 
instructions will result in the possibility of property damage, serious 
bodily injury or death.

Disclaimer:

 The manufacturer of this tank does not accept any liability 

or other responsibility for personal injury or property damage resulting 
from improper use, installation or operation of this tank or the system
of which it is a part.

Notice: 

We recommend that all thermal expansion and safety relief 

products be installed with adequate drainage provisions.

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