Armstrong 4280

Shortys HVAC Supplies can supply a complete Armstrong model 4280 if needed. This style pump is a custom built pump and is ordered by model number, size, serial number, motor horsepower and motor RPM. This information will be stamped on a plate located on the pump volute or baseplate.

The size is a combination of suction pipe size, discharge pipe size and impeller size before trim. As an example a model 4280 3x2.5x8 would sized for a 3" suction pipe, 2.5" discharge pipe and the impeller will be an 8" impeller. The impeller will be trimmed to match the pump curve and the motor will be selected for the amount of horsepower required.

Armstrong also made an old style version of this pump that uses a size such as 1-1.5D instead of the pipe and impeller sizes. This pump will have a tangental discharge line which means it is off to one side. The new version will have a centered discharge line.

If you need parts to repair an Armstrong 4280 pump please give us a call or send an email with the nomenclature from the pump nameplate and we will be happy to send you a quote. We typically stock all normal repair pats for this new style pump. Many parts for the old style have been discontinued.

Displaying 1 to 22 (of 22 products)
Armstrong Mechanical Seal Kit 975000-982

Armstrong Mechanical Seal Kit 975000-982

Armstrong mechanical seal kit P/N 975000-982 Replaces Armstrong P/N 9975000-991 Size 1-1/4" ceramic seat seal EDPM type 21A (Silicone Carbide)...

$111.00



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Armstrong Mechanical Seal Kit 975000-984

Armstrong Mechanical Seal Kit 975000-984

Armstrong pump mechanical seal kit P/N 975000-984 Replaces Armstrong P/N 9975000-993, 975000-993 Size 1-5/8" ceramic seat  seal EDPM type...

$168.00



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Armstrong Pump Casing Gasket 426401-002

Armstrong Pump Casing Gasket 426401-002

Armstrong pump casing gasket P/N 426401-002 6" Nitrile gasket size 6-1/4" x 7" x 1/16" Genuine Armstrong parts

$46.00



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Armstrong Pump Casing Gasket 426401-003

Armstrong Pump Casing Gasket 426401-003

Armstrong pump casing gasket P/N 426401-003 8" Nitrile gasket size 8-1/4" x 9" x 1/16" Genuine Armstrong parts

$60.00



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Armstrong Pump Casing Gasket 426401-004

Armstrong Pump Casing Gasket 426401-004

Armstrong pump casing gasket P/N 426401-004 10" Nitrile gasket size 10-1/4" x 11" x 1/16" Genuine Armstrong parts

$68.00



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Armstrong Pump Casing Gasket 426401-005

Armstrong Pump Casing Gasket 426401-005

Armstrong pump casing gasket P/N 426401-005 13" Nitrile gasket size 13-1/4" x 14" x 1/16" Genuine Armstrong parts

$93.00



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Armstrong Pump Casing Gasket 426401-006

Armstrong Pump Casing Gasket 426401-006

Armstrong pump casing gasket P/N 426401-006 11-1/2" Nitrile gasket size 11-3/4" x 12-1/2" x 1/16" Genuine Armstrong parts

$79.00



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Armstrong Pump Model 4280 Repair Kit 4280S-10

Armstrong Pump Model 4280 Repair Kit 4280S-10

Armstrong pump model 4280 repair kit P/N 4280S-10 Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with small size new...

$360.00



Armstrong Pump Model 4280 Repair Kit 4280S-11-1/2

Armstrong Pump Model 4280 Repair Kit 4280S-11-1/2

Armstrong pump model 4280 repair kit P/N 4280S-11-1/2 Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with small size...

$371.00



Armstrong Pump Model 4280 Repair Kit 4280S-6

Armstrong Pump Model 4280 Repair Kit 4280S-6

Armstrong pump model 4280 repair kit P/N 4280S-6 Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with small size new...

$327.00



Armstrong Pump Model 4280 Repair Kit 4280S-8

Armstrong Pump Model 4280 Repair Kit 4280S-8

Armstrong pump model 4280 repair kit P/N 4280S-8 Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with small size new...

$353.00



Armstrong Pump Model 4280 Seal Kit 4280M-10JM

Armstrong Pump Model 4280 Seal Kit 4280M-10JM

Armstrong pump model 4280 repair kit P/N 4280M-10JM Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with medium size new...

$459.00



Armstrong Pump Model 4280 Seal Kit 4280M-10JP

Armstrong Pump Model 4280 Seal Kit 4280M-10JP

Armstrong pump model 4280 repair kit P/N 4280M-10JP Includes casing gasket, shaft sleeve, mechanical seal Kit used with medium size new...

$431.00



Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JM

Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JM

Armstrong pump model 4280 repair kit P/N 4280M-11-1/2JM Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with medium size new...

$470.00



Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JP

Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JP

Armstrong pump model 4280 repair kit P/N 4280M-11-1/2JP Includes casing gasket, shaft sleeve, mechanical seal Kit used with medium size new...

$442.00



Armstrong Pump Model 4280 Seal Kit 4280M-13JM

Armstrong Pump Model 4280 Seal Kit 4280M-13JM

Armstrong pump model 4280 repair kit P/N 4280M-13JM Includes casing gasket, stainless shaft sleeve, mechanical seal This kit works only with ...

$486.00



Armstrong Pump Model 4280 Seal Kit 4280M-13JP

Armstrong Pump Model 4280 Seal Kit 4280M-13JP

Armstrong pump model 4280 repair kit P/N 4280M-13JP Includes casing gasket, shaft sleeve, mechanical seal This kit works only with  motors...

$457.00



Armstrong Pump Model 4280 Seal Kit 4280M-6JM

Armstrong Pump Model 4280 Seal Kit 4280M-6JM

Armstrong pump model 4280 repair kit P/N 4280M-6JM Includes casing gasket, stainless shaft sleeve, mechanical seal Kit used with medium size new...

$437.00



Armstrong Pump Model 4280 Seal Kit 4280M-8JM

Armstrong Pump Model 4280 Seal Kit 4280M-8JM

Armstrong pump model 4280 repair kit P/N 4280M-8JM Includes casing gasket, stainless shaft sleeve, mechanical seal This kit works only with motors...

$452.00



Armstrong Pump Model 4280 Seal Kit 4280M-8JP

Armstrong Pump Model 4280 Seal Kit 4280M-8JP

Armstrong pump model 4280 repair kit P/N 4280M-8JP Includes casing gasket, shaft sleeve, mechanical seal This kit works only with motors with JP in...

$423.00



Armstrong Shaft Sleeve Kit 810150-251

Armstrong Shaft Sleeve Kit 810150-251

Armstrong stainless shaft sleeve kit P/N 810150-251 Replaces Armstrong P/N 810150-150, 810150-151 Used on model 4280 and 4380 new style pumps...

$221.00



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Armstrong Shaft Sleeve Kit 810150-253

Armstrong Shaft Sleeve Kit 810150-253

Armstrong stainless shaft sleeve kit P/N 810150-253 Replaces Bell & Gosset P/N 185021, PW-2438AB Genuine Armstrong parts Shipping...

$230.00



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Displaying 1 to 22 (of 22 products)

About Us


Welcome to Shortys HVAC Supplies. We are located on the South West side of Indianapolis, IN. Our purpose is to provide Original Equipment Manufacturer parts for the repair and maintenance upkeep of furnaces, air conditioners, ventilation systems and pumps to the general public as well as contractors and commercial building maintenance staff.


We sell brand new OEM parts for most manufacturers such as Carrier, Bryant, Payne, Lennox, Armstrong Aire, Ducane, Trane, American Standard, Heil, Tempstar, Nordyne, Goodman, Rheem, Ruud, York, Coleman, Modine, Reznor, Armstrong Pumps, Bell and Gossett pumps, Weil McLain, Lochinvar, McDonnell Miller, Hoffman Specialties, Manitowoc, Scottsman and we strive to make sure you get the correct part for your application.


Give us a call with the information from your equipment nameplate and we will do our best to help. We can be reached at our local phone number 317-821-8770, Toll Free 877-821-8770 or by fax at 317-821-8772. Our physical address is 7720 S Mooresville Rd in West Newton , IN 46183. Business hours are 8-5 EST M-F. Prior to making repairs please consult your manufacturers instructions and follow all safety precautions. Improper repairs can lead to equipment damage or personal injury or death. If you are unsure of your ability please call a professional company.


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Company Name

Shortys HVAC Supplies LLC

Location

7720 S Mooresville RD
West Newton, IN
USA 46183

Get in Touch

877-821-8770
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About Us

Shortys HVAC Supplies LLC 2019