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Series 4270 Motor Mounted Pumps

Series 4270 Motor Mounted Pumps

Series 4270 Motor Mounted Pumps

Product catalog summary
Overview: The document provides technical specifications and features of the Armstrong Series 4270 Motor Mounted Centrifugal Pumps, highlighting their design, materials, and performance capabilities.
Volute: The pump features a radially-split volute that allows for servicing without disconnecting pipes. It includes tapped openings for venting, draining, and gauge connections.
Impeller: Made from high-strength engineered resin or bronze, the impeller minimizes axial thrust, ensuring smooth operation and longevity.
Motor: Equipped with heavy-duty, permanently lubricated ball bearings, the motor is designed to handle impeller radial loads and hydraulic thrusts, operating at 3600 rpm.
Mechanical Seal: The self-lubricating seal prevents liquid spillage, with a carbon face rotating against a ceramic seat for effective sealing up to full design pressure.
Adaptor and Shaft: The aluminum die-cast adaptor includes an integral support foot for durability. The motor shaft extends through to the impeller, eliminating the need for an intermediate bearing bracket.
Back Pull-Out Design: This design feature allows for easy removal of the motor, bracket, and impeller from the volute without breaking piping connections.
Applications: Suitable for cooling towers, HVAC systems, and general-purpose use.
Technical Data: The pump has a suction size of 1 1/4", 1 1/2", or 2", with a maximum flow of 130 USgpm and a maximum head of 130 ft. It can withstand a maximum working pressure of 150 psig and an operating temperature of up to 275°F.
Materials of Construction: The pump components are made from materials such as cast iron, bronze, stainless steel, and Viton, ensuring durability and performance.
Performance Curves: The document includes performance curves for different pump sizes and speeds, illustrating flow rates and head capabilities.
Dimensions: Detailed dimensions for various pump sizes are provided, with NPT screwed connections for all sizes.
Contact Information: The document lists contact details for Armstrong locations in Canada, the USA, and the UK.
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Catalog excerpts

Series 4270 Motor Mounted Pumps-1

Motor Mounted Centrifugal Pumps

 Open the catalog to page 1
Series 4270 Motor Mounted Pumps-2

Features That Ensure Performance Excellence! Volute Mechanical Seal Radially-split volute can be left in the line while servicing the pump, eliminating needless disconnecting of pipes. Tapped openings are provided for venting, draining and gauge connections. Self-lubricating, prevents liquid spillage. A carbon face rotating against a stationary ceramic seat provides positive sealing up to full design pressure (Type 21). Adaptor Impeller High strength engineered resin or bronze impeller reduces axial thrust to a minimum, ensuring smooth performance and long life. Aluminum die cast, with integral...

 Open the catalog to page 2
Series 4270 Motor Mounted Pumps-3

Motor Mounted Centrifugal Pumps Performance Curves Head (m) ft (USgpm) (L/min) (USgpm) (L/min) Flow Water, spgr= 1.0000 Flow Water, spgr= 1.0000 (USgpm) (L/min) (USgpm) (L/min) Flow Water, spgr= 1.0000 Flow Water, spgr= 1.0000 (USgpm) (L/min) (L/min) Flow Flow Water, spgr= 1.0000

 Open the catalog to page 3
Series 4270 Motor Mounted Pumps-4

Note: Dimensions are in inches (mm). For exact dimensions please write factory. All pump sized are provided with NPT screwed connections. Typical Specifications Furnish and install, as shown on the plans and specifications, an Armstrong Series 4270 End Suction Motor Mounted Centrifugal Pumping Unit suitable for 150 psig (1034 kPa) working pressure with radially-split __________ casing, PEI resin or bronze impeller, 416 stainless steel shaft and single inside-type 21 mechanical seal. The driving motor shall be horizontal, solid shaft, squirrel cage induction motor with NEMA C flange and ________...

 Open the catalog to page 4
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.