Zurn XT User manual

XT
Zurn
Brand
Zurn
Model
XT
Type
User manual

Zurn XT is a water thermal expansion tank designed to protect potable water lines from pressure increases caused by thermal expansion. It features a polypropylene-lined water chamber and a butyl rubber diaphragm, ensuring durability and preventing water contact with the steel shell. IAPMO®-listed and NSF/ANSI 61 & 372-certified, it's suitable for temperatures up to 200°F. Use it with a properly sized pressure relief valve set at a maximum of 150 PSI. For supply pressures above 80 PSI, a pressure-reducing valve is recommended. Choose Zurn XT for reliable water thermal expansion protection.

Zurn XT is a water thermal expansion tank designed to protect potable water lines from pressure increases caused by thermal expansion. It features a polypropylene-lined water chamber and a butyl rubber diaphragm, ensuring durability and preventing water contact with the steel shell. IAPMO®-listed and NSF/ANSI 61 & 372-certified, it's suitable for temperatures up to 200°F. Use it with a properly sized pressure relief valve set at a maximum of 150 PSI. For supply pressures above 80 PSI, a pressure-reducing valve is recommended. Choose Zurn XT for reliable water thermal expansion protection.

Page 1 of 2
Rev. C
Date: 12/19
Document No. WXT-XT
Product No. Model XT
Model XT
Water Thermal Expansion Tank
Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766
In Canada | Zurn Industries Limited
7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216
www.zurn.com
Accessories
NR3XL - Water pressure reducing valve
TP1100A - Temperature & pressure relief valve
P1000AXL - Pressure relief valve
P3000CI - Pressure relief valve
P3000BR - Pressure relief valve
975XL2 - Reduced pressure backflow preventer
VR10XL - Vacuum relief valve
Application
Designed for installation on potable water lines between the
backflow preventer or pressure reducing valve and the water
heater to protect against water thermal expansion. When
system pressure increases, water enters the tank’s polypro-
pylene lined water chamber which expands a diaphragm into
a pre-charged air chamber, keeping system pressure below
the relief valve setting.
Standards Compliance
IAPMO® Listed
Water Quality Association - Certified to NSF/ANSI 61 & 372*
*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Materials
Outer shell Carbon Steel
Coatings Epoxy finish (outer shell)
Connection Stainless Steel
Liner Polypropylene
Diaphragm Butyl Rubber
Features
Sizes (liters): 8, 18, 35
Maximum Supply Pressure: 80 PSI
End connections Threaded NPT
ANSI B1.20.1
Factory Pre-charge (adjustable) 40 PSI
Note: Model XT tanks are certified to NSF 61 domestic hot,
but are suitable for temperatures up to 200° F.
Note: Not suitable for use on fire sprinkler systems as
required by NFPA 13 or 13D.
TANK DIMENSIONS AND CAPACITIES
MODEL
NUMBER
MAXIMUM SUPPLY
PRESSURE
psi
TANK
VOLUME
(gallons)
MAXIMUM
ACCEPTANCE
VOLUME
(gallons)
FACTORY
PRE-CHARGE
psi
DIMENSIONS
WEIGHT
lbs.
DIAMETER
A
HEIGHT
B
SYSTEM
CONNECTION
C
XT-8 80 2.1 1.0 40 8 10 1/2 3/4NPT 5.5
XT-18 80 4.8 2.4 40 11 13 1/2 3/4 NPT 10
XT-35 80 9.0 4.25 40 12 1/2 17 1/4 3/4 NPT 15.5
A
B
C
NSF/ANSI 61
NSF/ANSI 372
Dimensions & Weights (do not include pkg.)
Page 2 of 2
Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766
In Canada | Zurn Industries Limited
7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216
www.zurn.com
Typical Installation
Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted on the cold
water supply and at least 18” from the cold water inlet to the heater. Note: Pre-charge should be adjusted to match incoming
water pressure (adjust pre-charge with no water pressure in tank).
Maximum allowable pre-charge in this expansion tank is 80 PSI. A properly sized pressure relief valve set at a maximum of
150 PSI must also be installed in the system. For installations that have a supply pressure above 80 PSI, a properly sized
pressure reducing valve should be installed on the system.
Specications
The Water Thermal Expansion Tank outer shell shall be carbon steel. The diaphragm shall be FDA approved butyl rubber and,
the water chamber shall be polypropylene lined to preclude water contact with the shell interior. The assembly shall have a
NPT Stainless steel system connection and a 0.301”-32 charging valve connection (standard tire valve) to facilitate the on-site
charging of the tank to meet system requirements. The tank shall be IAPMO® listed and certified to NSF/ANSI 61& 372. The
Water Thermal Expansion Tank shall be a ZURN WILKINS Model XT.
Model XT Installation
Sizing Chart
Supply
Pressure (PSIG)
Tank
Pre-Charged (PSIG)
WATER HEATER CAPACITY (U.S. gal)
20 30 40 50 60 80 100 120 150 175 200
40 40 8 8 8 8 8 18 18 18 35 35 35
50 50 8 8 8 8 8 18 18 18 35 35 35
55 55 8 8 8 8 8 18 18 18 35 35 35
60 60 8 8 8 8 18 18 18 18 35 35 35
70 70 8 8 8 18 18 18 18 35 35 35 35
80 80 8 8 18 18 18 18 35 35 35 35 35
Based upon 100° temperature rise (40°F to 140°F) and 150 PSI maximum allowable tank pressure
T&P VALVE
TP1100A
DIRECTION OF FLOW
HOT WATER
HEATER
MODEL XT
DRAIN
HOSE BIBB
MODEL 975XL2
MODEL NR3XL
WATER PRESSURE
REDUCING VALVE
  • Page 1 1
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Zurn XT User manual

XT
Zurn
Brand
Zurn
Model
XT
Type
User manual

Zurn XT is a water thermal expansion tank designed to protect potable water lines from pressure increases caused by thermal expansion. It features a polypropylene-lined water chamber and a butyl rubber diaphragm, ensuring durability and preventing water contact with the steel shell. IAPMO®-listed and NSF/ANSI 61 & 372-certified, it's suitable for temperatures up to 200°F. Use it with a properly sized pressure relief valve set at a maximum of 150 PSI. For supply pressures above 80 PSI, a pressure-reducing valve is recommended. Choose Zurn XT for reliable water thermal expansion protection.

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