2025 EN Catalog-Interactive - Flipbook - Page 211
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:
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.
(B)
RISER
LENGTH
• 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)
• 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)
(A)
MODEL
LENGTH
• Y = Pump motor horsepower rating**
• VS4 = 4 hp variable speed
• A = Model length (see table)
• VL1 = STP variable length range #1
• VL2 = STP variable length range #2
• VL3 = STP variable length range #3
• B = Riser pipe length (diagram above)
• 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.
SUBMERSIBLE
PUMPING SYSTEMS
211
