Product Overview

SERIES L
Model Range Suction and
Models HP Range Discharge Size
2.5 LM 5/6/8
1
/2,
3
/4, 1, 2, 3, 5 2
1
/2"
3.0 LM 5/6/8 1, 1
1
/2, 2, 3, 5, 7
1
/2 3"
2.5 LP 5, 7
1
/2 2
1
/2"
3.0 LP 5/6 5, 7
1
/2, 10, 15, 20 3"
4.0 LP 5 7
1
/2, 10, 15, 20 4"
Materials of Construction
Grundfos Series L stainless steel fitted booster
pumps are engineered for easy, no-shim
installation, and have a space-saving compact
footprint.
Featuring
• High-grade stainless steel pump shaft
• Neck-ring and impeller
Design
• Maintenance-free
• Low starting torque and high operating
efficiency.
• Corrosion-resistant shaft seal faces are tungsten
carbide/tungsten carbide for reliable performance in
open or closed systems in temperature ranges of 5°
to 250°F.
The Series L operates at heads up to 180 feet and
flows to 600 gpm. Models are offered in 1750 and
3450 RPM. Standard NEMA-C face motors simplify
installation and allow for a broad application range.
BOOSTER PUMPS FOR
COMMERCIAL AND INDUSTRIAL
HEATING AND COOLING
APPLICATIONS
Common Applications: Boiler/Hydronic Heating • Chilled Water • Circulation •
Cooling Towers • Fluid Transfer • Fountains • Glycol Solutions • Greenhouse
• Ground Source Heat Pumps • Heat Pumps • Hot Water Recirculation • HVAC •
Industrial • Marine Service • Paint Booth • Process Water • Quench Water
• Direct-coupled to
standard NEMA-C
face motor
• 431 stainless steel
pump shaft
• High quality
stainless steel shaft
seal and impeller
Description Material
Pump Shaft AISI-431 SS
Impeller, Impeller Wear Ring, AISI 304 SS
Coupling Guards, Impeller Seal Ring,
Impeller Locking Nut and Washer
Pump Housing, Motor Stool and Coupling Cast Iron
Housing O-rings EPDM-Rubber
Air Vent Screw Brass
Mechanical Shaft Seal
Rubber Bellows EPDM
Stationary Seal Face Carbon
Rotating Seal Face Tungsten Carbide
Mechanical Seal Spring AISI-304 SS
The compact, in-line design of the Series L simplifies
piping and features a space-saving footprint.