Watts ETA User Manual

For Heating and Cooling Systems

Job Name Contractor Job Location Approval Engineer Contractor’s P.O. No. Approval Representative

Series ETA

ASME

Pressurized Expansion Tanks for

Heating and Cooling Systems

Models ETA 15 to ETA 240

Watts Model ETA Tanks are ASME fixed bladder type precharged expansion tanks. They are designed to absorb the expansion forces and control the pressure in heating & cooling systems. The water is contained in the heavy duty bladder preventing tank corrosion and waterlogging problems.

ES-ETA

FEATURES

• ASME Section VIII Construction

• Heavy Duty Butyl Bladder

• Precharged to 12 psi (Field Adjustable)

CONSTRUCTION

Shell: Carbon steel Bladder: Heavy duty butyl

Prime painted exterior

PRESSURE - TEMPERATURE

Maximum Design Pressure:

ETA 15 through ETA 60: 150 psi (10 bars) ETA 80 through ETA 240: 125 psi (8.5 bars) Precharged to 12 psi (83 kPa) Maximum Design Temperature: 240°F (115°C)

SPECIFICATIONS

Furnish and install as shown on plans a Watts Model ETA ____ gallon ____ " diameter x ____" (high) pre-charged steel expansion tank with a fixed butyl bladder. The tank shall have a top NPT system connection and a .302" - 32 charging valve connection (standard tire valve) to facilitate the on-site charging of the tank to meet system requirements. The tank must be constructed in accordance with Section VIII of the ASME Boiler and Pressure Vessel Code.

Schedule

Tank Acceptance

Model Volume Volume

Number Gallons Gallons Tagging Information Quantity

ETA 15 7.8 2.5 ETA 20 10.9 2.5 ETA 40 25 10 ETA 60 35 10

ETA 80 45 21 ETA 100 60 21 ETA 120 70 48 ETA 144 80 48 ETA 180 90 48 ETA 200 115 48 ETA 240 140 52

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

USA: 815 Chestnut Street, North Andover, MA 01845-6098

Canada: 5435 North Service Road, Burlington, Ontario L7L 5H7

ASME EXPANSION TANKS - Pressurized

LIFT

RING

SYSTEM

CONNECTION

CHARGING

VALVE

SYSTEM

CONNECTION

CHARGING

VALVE

O.A.H.

DIA.

ETA 15 and ETA 20

ETA 40 through ETA 240

DIMENSIONS - WEIGHT

System Max. Dimensions

Connection Operating

Model DN Pressure Dia. Height C Weight*

Number in. mm (PSIG) in. mm in. mm in. mm lbs. kgs.

ETA 15 ETA 20 ETA 40 1 25 150 16 406 33 838 12 305 84 38 ETA 60 1 25 150 16 406 45 1143 12 305 97 44 ETA 80 1 25 125 20 508 38 968 18 457 148 67 ETA 100 1 25 125 20 508 49 1245 18 457 175 79 ETA 120 1 ETA 144 1 ETA 180 11⁄2 40 125 24 610 52 1321 22 559 283 128 ETA 200 1 ETA 240 1

Note: Tanks are factory pre-charged at 12 psi and field adjustable. (*approximate)

⁄4 20 150 12 305 19 483 – – 42 19

⁄4 20 150 12 305 26 660 – – 52 24

⁄2 40 125 24 610 46 1168 22 559 259 117

⁄2 40 125 24 610 49 1245 22 559 268 122

⁄2 40 125 24 610 66 1676 22 559 325 147

⁄2 40 125 24 610 78 1981 22 559 362 164

ES-ETA 0148-1 Printed in U.S.A.