Armstrong International
IOM-706 V2.0
Flo-Direct Water Heater
Specifications — Storage Tank
Page 9 of 45
Storage Tank
Materials of Construction
Component
Material
Structural layer
Fiber-reinforced plastic
Structural and liner resin
Derakane
TM
441-400
Exterior layer resin
Isophthalic polyester
Tank finish
Gel coat with UV inhibitor
Color
Gray (AT071)
Tank fittings
Fiber-reinforced plastic
Vent
Fiber-reinforced plastic
Manhole and cover
Fiber-reinforced plastic
Manhole cover bolts
Stainless steel
Manhole gasket
EPDM
Hold down and lifting lugs
Powder-coated carbon steel
General Specifications
Design standard
ASTM D49097-00
Maximum pressure
Atmospheric
Vacuum
None
Maximum temperature
180 °F (82.2 °C)
Specific gravity
1.2
Seismic code/design
None
Wind load
0 mph/kph
Immersion heater port
2" NPT
Sight glass port
1" NPT
Insulation thickness
2" (50 mm)
Specifications by Model
Model
Nominal Storage
Volume
No. Inlet
Connections
Piping Connections
Height
Diameter
Weight
(Empty)
Inlet
Outlet
Gal
m
3
in.
mm
in.
mm
in.
mm
in.
mm
lb
kg
RST-1001
1000
3.785
1
2-1/2 NPT
65
2 NPT
50
96
2442
65
1651
1200
544
RST-3001
3000
11.36
1
3 NPT
80
3 Flange
80
148
3759
87
2210
2000
907
RST-5001
5000
18.93
1
4 Flange
100
4 Flange
100
152
3861
113
2870
2600
1179
RST-5002
5000
18.93
2
4 Flange
100
4 Flange
100
152
3861
113
2870
2600
1179
