Armstrong 4280 Motor Mounted Pumps
- Applications-HVAC-system pumping; light industrial / process pumping.
- Description-The Armstrong 4280 horizontal end-suction pumps are equipped with close-coupled motors to minimize footprint requirements.
- Materials(MOC)-Cast iron, ductile iron, or bronze casing, Cast iron or bronze impeller.
- Configuration-Inside single-spring mechanical seal
- Performance range-Up to 2,000 USgpm (125 L/s) flow; up to 400 f (120 m)
- Temperature-250°F (121°C)
- Power Range-0.33 hp to 60 hp (0.25 kW to 45 kW)
- Size-1″ to 6” (25 mm to 150 mm)
Description
Benefits & Features
Best-in-class design
- ANSI style centerline discharge casing eliminates casing vapor lock
- Sintered silicon carbide mechanical seal seat for longer life
- Confined casing gasket eliminates blow-outs
- Pre-lubricated and sealed ball bearings for convenient installation (simply pipe, align, wire and start)
- Motor feet mounting only needed with over-hung casing
Compact design
Low energy consumption
- Armstrong 4280 pumps are equipped with high-efficiency NEMA-premium motors for significant reduction in energy consumption and cost.
- All motors are suitable for inverter-fed service.
Low operating risk and cost
- Universal replacement seals, bearings, and motors available locally world-wide.
- ANSI-style centerline discharge casing eliminates air binding.
- Pre-lubricated and sealed ball bearings eliminate lubrication requirements.
Related products
Armstrong 4380 vertical in-line pumps
- Applications-HVAC-system pumping; light industrial/ process pumping. (water or glycol based)
- Description-The Armstrong 4380 pipe-mounted pumps are designed for space-saving installation and long service life.
- Materials(MOC)-Cast iron or ductile iron casing, Silicon sintered carbide mechanical seal, Cast iron or bronze impeller.
- Configuration-Inside single-spring mechanical seal.
- Performance range-Up to 2,500 USgpm (160 L/s) flow; up to 300 ft (90 m) head
- Temperature-250°F (121°C)
- Power Range-0.33 hp to 60 hp (0.25 kW to 45 kW)
- Size-1.5″ to 8″ (40 mm to 200 mm)
Armstrong Air & Dirt Separators
- Applications-Dirt and air removal from hydronic and HVAC systems.
- Description-The Armstrong dirt & air separators (DAS) are designed to eliminate trapped air and suspended dirt particles associated with the start-up and maintenance of hydronic and HVAC systems.
- Materials (MOC)-Carbon steel (shell), stainless steel (coalescing medium), styrene butadiene rubber (gasket)
Armstrong Design Envelope 4300 Pumps
- Applications-HVAC-system pumping and control; general purpose pumping; industrial/process pumping and control. (water or glycol based)
- Description-Pipe-mounted UL 778 pumping unit with integrated intelligent controls for space-saving installation and superior energy performance. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations. Remote services through internet to enhance reliability and sustain optimal performance over life of pumps.
- Materials(MOC)-Ductile iron e-coated casing, Stainless steel impeller, Sintered silicon carbide mechanical seal
- Configuration-On-board Intelligent Variable Speed controls with Sensorless control. Split-coupling design and outside balanced or inside single spring mechanical seal. Controls enclosure UL type 12 or UL type 4X for outdoor applications. 0.33-50hp range standard with DEPM motors that reduce losses by more than 20% over NEMA Premium efficiency. Network capable for remote performance management services.
- Performance range-25 to 25,000 USgpm (1.5 to 1500 L/s) flow; 10 to 300 ft (3 to 90 m) head (composite curves available)
- Temperature-300oF (150oC)
- Power Range-0.33 hp to 1250 hp (0.25 kW to 900 kW)
- Size-1″ to 20″ (25 mm to 500 mm)
Armstrong Design Envelope 6800 Vertical Multistage Boosters
- Applications-New and retrofit water boosting installations in mid to large size residential, commercial, or industrial settings (such as apartment buildings, office towers, hospitals, hotels, schools, water treatment plants, factories, etc.)
- Description-The Armstrong Design Envelope 6800 Boosters are fully assembled, programmed, integrated and factory-tested turn-key booster systems. They are equipped with vertical multistage pumps and come in arrangements of 2 to 5 pumps. The integrated controls allow for superior performance and energy efficiency across broad operating envelopes. Most suitable for applications where energy consumption and low maintenance are critical, installation space comes at a premium, and occupant comfort is a high priority.
- Materials (MOC)-Piping: stainless steel 304
- Configuration-The 6800 Booster range offers enhanced features, such as improved touchscreens, more performance envelopes, an easy-to-use selection software, and onboard energy and flow readings both present and historic. For the full improved feature set please refer to the Solution Outline for this product.
- Performance range-Up to 2000 USgpm (450 m3/hr) flow; up to 370 psi (22 bar) pressure
- Power Range-Up to 250 hp (up to 185 kW)
Armstrong Design Envelope Compass h Circulators
- Applications-Residential heating and cooling; potable water supply.
- Description-The Armstrong Compass H is an energy-efficient variable speed wet-rotor circulator. Designed to replace existing fixed speed circulators, with popular flange-to-flange dimensions, Compass H can be considered a universal replacement for all circulators in its capacity range.
- Materials (MOC)-Cast iron and stainless steel volutes.
- Configuration-Eight operation modes with patented “Auto” algorithm, four Sensorless modes and three fixed speed modes. 50 Hz and 60 Hz designs
- Performance range-Up to 20 USgpm (1.26 L/s) flow; up to 20 ft (6.1 m) head
- Temperature-Max ambient temp. 40°C; max water temp. 110°C
- Power Range-5 W to 45 W
- Size-1″
Armstrong Design Envelope Integrated Pumping System (IPS 4000)
- Applications-Multi-pump control for heated – or chilled – water system optimization in buildings.
- Description-The Design Envelope Integrated Pumping System (IPS 4000) is an advanced multi-zone control that directly integrates with pumping units to optimize energy performance, system handling, and installation.
- Materials (MOC)-Enclosure, circuitry, software
- Configuration-Integrates seamlessly with Armstrong Design Envelope pumps in a headered configuration.
- Performance range-Up to 8 pumps, 16 zones (variable primary, secondary or tertiary) and 8 flow sensitive equipment (variable primary) IPS 4001w / IPS 4501w for up to 3 pumps, 3 zones and 3 flow sensitive equipment IPS 4002w / IPS 4502w for up to 4 pumps, 6 zones and 4 flow sensitive equipment IPS 4003w / IPS 4503w for up to 6 pumps, 12 zones and 6 flow sensitive equipment IPS 4004w / IPS 4504w for up to 8 pumps, 16 zones and 8 flow sensitive equipment
- Power Range-No limitations in system size and capacity.
- Size-No limitations in system size.
Armstrong Firepak Vertical In-line
- Applications-Fire-protection of buildings and other built infrastructure.
- Description-The Armstrong Vertical In-line (VIL) FirePak line features the full range of VIL fire pumps with electric motor and controller. All mounted, piped, and wired on a base at the factory. The complete package is designed to fit through a standard door.
- Materials (MOC)-Metal base, piping, pump, and control panel; switchgear; electric motor.
- Configuration-Options available include jockey pump and jockey pump controller. 50 Hz and 60 Hz designs. UL, ULC, and/or FM certification
- Performance range-50 – 1500 USgpm
Armstrong Vortex Air Separators
- Applications-Air removal from hydronic and HVAC systems – air can get trapped during initial fill, during routine equipment maintenance (including pressure upkeep), and due to the use of cooling towers.
- Description-The Armstrong vortex air separators create a vortex or whirlpool action, sending the heavier air-free water to the outer portion of the tank, and allowing the lighter air-entrained water mixture to move into the lower-velocity center. At the center of the vortex the air is released from the water, forms bubbles and exits through an air vent or compression tank installed above it.
- Materials (MOC)-Cast iron or fabricated steel (shell), stainless steel mesh (strainer)

