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- Anvil
- Acme
- Aqua Glass
- Arrow
- Atco Flex
- American Granby
- Amtrol
- Baker
- Balon
- N.L. Baroid
- Bemis
- Blancett
- Bowie
- Bradford-White
- Broderick & Bascom
- Browning
- Cerro
- Cooper
- C.S.I.
- Century Heat Cont.
- Cresline
- Crosby
- Dearborn-Brass
- Delta
- Dresser
- Duravent
- Eagle
- Elkay
- Essex
- Flexcon
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- Flint & Walling Pumps
- Fluidmaster
- Gates
- Gas-Tite
- Gerber
- Goulds
- Guiberson
- Ham-Let
- Harbison-Fischer
- Hold-Rite
- Huber
- Ideal
- Infiltrator
- Jet Stream
- Kamen
- Kemper
- Lamons
- Lasco
- Laciede
- Larkin
- Lima Register
- Lee
- Legend Value
- Lubrikup
- Lufkin
- MacClean/Cuno
- McDaniel
- 3M
- Mansfield China
- Mass-Midwest
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- Maverick
- Murphy
- Mission Rubber
- F.E. Myers
- Nibco
- Nordstrom
- Norris
- Oatey
- Penberthy
- W.A. Powell
- Purolator
- Recterseal
- Reed
- Rigid
- Roctest
- Rustoleum
- Salta
- Skinner Bros.
- Star Fiberglass
- Texsteam
- Upco
- U.S. Filter
- Utex
- Victaulic
- Vogt
- Watts
- Whisk
- Wika
- Wirsbo
- Woodford
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Robinson, IL
Bridgeport, IL
Salem, IL
St. Elmo, IL
Bloomington, IL
Carmi, IL
Princeton, IN
New Harmony, IN
Henderson, KY
Gaylord, MI
Powell, WY
Riverton, WY
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