EN Catalog 2021-22 - Catalog - Page 224
SPECIFICATIONS CONTINUED
Standard Features
• All IST® models include variable speed, variable length
options and alcohol-gasoline compatibility.
•
Check valve: 70 mm diameter fluorocarbon seal constructed on
cast aluminium body and steel backing washer.
•
Pressure relief valve: available in four pressure relief
settings, integral to check valve. Standard model relieves
at 2.76 bar and resets above 2.41 bar
•
Syphon: venturi-type syphon primer supplied with every
submersible. Syphon check valve and secondary syphon
sold separately.
•
Air eliminator: every submersible includes tank return path with
one-way check valve to provide active air elimination.
•
Electrical disconnect: electrical yoke for positive contractor
disconnect during service.
Approvals
Consult factory for applicable approvals.
•
Quality Certification
• ISO 9001 Certified Manufacturer.
ORDER INFORMATION
Intelligent STP Model Designation System
A typical turbine model designation has up to five
components to define the pump being supplied as follows:
B
IST® XXXXX Y - A - B
•
•
IST = Basic model designation
®
Note: All IST® models include the options of alcohol-gasoline
compatibility, variable speed and variable length as part
of the base model.
XXXXX = Factory installed options
•
IST® model designations may include one or more of the
following characters in alphabetical order:
•
•
•
•
F = Floating suction adapter (1½" NPT female adapter)
•
W* = Model W check valve (1.10 bar relief/0.89 bar reset
for PPM4000)
K = Intake filter screen (IFS, factory installed to PMA)
M = MagShell® (flow enhancing, expanded PMA shell)
R* = Model R check valve (1.65 bar relief/1.52 bar reset
for PLLD)
•
Y = Pump motor horsepower rating**
•
A = Model length (see table)
•
•
VS4 = 4 hp variable speed
•
•
•
VL1 = STP variable length range #1
VL2 = STP variable length range #2
VL3 = STP variable length range #3
B = Riser pipe length (diagram above)
•
A
Riser pipe length is expressed as two numeric
characters that indicate the total length of the riser in
inches. Riser pipes are available from 178 mm to
1524 mm in 25.4 mm increments (additional charge for
risers 787 mm or longer).
Part
2 Hp
4 Hp
Model Length* Range
Model Length Range Number
1486 mm—2228 mm
VL1
2274 mm—3835 mm
VL2
3087 mm—5429 mm
VL3
1613 mm—2355 mm
VL1
2401 mm—3962 mm
VL2
3214 mm—5556 mm
VL3
*If not otherwise specified, all models are supplied with standard model check valve
(2.76 bar relief/2.41 bar reset for MLD, TS-LS300, and TS-LS500).
**If not otherwise specified, 2 Hp variable speed pump motor horsepower rating
is implied for IST® models.
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