| A Allen Company
 Alsons Corp.
 American Saw & Mfg. Co.
 American Shower & Bath
 AMETEK
 AMTROL
 Aqua Glass
 Advance Drainage Company
 American Granby
 American Valve
 American Brass & Aluminum
 Armacell 
                  Insulation
 | B BASCO
 BEMIS
 Boshart
 Bow Industrial
 Bradford White
 B&K Industries
 Bernzomatic
 | 
                 
                  | C Cambridge-Lee
 Colonial Engineering Inc.
 Conbraco
 Crumpler Plastic Pipe
 Comfort Seat
 Camco
 Cello
 Coleman Cable
 C&S Manufacturing
 Crane Plumbing
 | D Dearborne Brass
 Delta Faucet
 Delta Pipe
 Dallas Specialty
 | 
                 
                  | E Elkay
 Elkhart Products Corp.
 Englehard Corp.
 | F Fernco Inc.
 Fluidyne Ansonia
 Florestone
 | 
                 
                  | G GATCO Inc.
 General Wire Spring Co.
 Grundfos Pumps
 | H Halsey Taylor
 Hammond Valve
 Hercules Chemical Co Inc.
 Holyoke Fittings Inc.
 Howell Metal Company
 Hunter Plumbing Products
 Hydromatic Pump
 Hico
 | 
                 
                  | I IMSCO Inc.
 In-Sink Erator
 | J J-Tec Products
 JOMAR Inc.
 Jones Stephens
 | 
                 
                  | K KNOX Co.
 | L LASCO
 Lewis Pipe Co.
 Little Giant
 Lenox
 | 
                 
                  | M Mission Rubber
 Mr. Tubs Inc.
 | N NIBCO
 NDS
 | 
                 
                  | O Oatey
 Orbit Irrigation
 | P Plastic Oddities
 Plastic Trends
 Price Pfister
 | 
                 
                  | R Radiator Spec.
 Rebel Ridge Inc.
 Rectorseal
 Reed Manufacturing
 Rain Bird Irrigation
 Ridgid Tools
 | S Seachrome
 Seminole Tube
 Silverline
 Sioux Chief
 Sloan Valve Co.
 Sta-Rite Pumps
 Swan Corp.
 Southern Pipe
 | 
                 
                  | T Turbo Torch
 Tara Corp
 | U Universal Rundle
 | 
                 
                  | V Vanguard
 Vortens
 | W Ward Manufacturing
 WATCO Manufacturing
 Watts Brass / Tube
 Watts Regulator
 Webstone
 |