Apollo
Anvil Aquamine
Armstrong Steam ASCO A. Y. McDonald A. W. Cash Valve Mfg. Corporation
Babbitt Chain Wheels Bailey Controls
Baum
Billco Bristol Metals Camco Fittings Company Capitol Manufacturing Company Catawissa Central Plastics Century Valve Cerro Tube Charlotte Pipe
Check-All Valves Chemtrol
Clow Conbraco Contech Dayco Imperial DeZurik Dixon Valve & Fitting Dresser Manufacturing Division Durabla Manufacturing Company Elomatic
Endot-Yardley
ExL-Tube
Fabri Valves
Felker Bros.
Flying "w" Plastics
FNW Gibson Tube Grinnell Hancor
Hayward Mfg. Homestead Industries, Valve Division
Howell Metal Imperial Eastman
Indalex Alum. IPEX Ipsco Tubular
ITT Engineered Valves Jamesbury JCM Clamps Kerkau Kerotest Kunkle Valve Company
Ladish Company
Legend Valves Liberty Coatings
Lunkenheimer
LYONS Workspace Products
Maass Flange Matryx McElroy Mfg. Merit Brass
Micromold Modine Unit Heaters
Morris Coupling Mueller Brass Company Mueller Steam Nibco, Inc.
O.C. Keckley
OVC
Penn Machine Perfection Corporation Phoenix Forge PMV Positioners
Poly Pipe, Inc. Powell Valve RAMCO
Rath/Gilbson
Reading Tube Rectorseal Corp.
Red Valve Resun Ridgid Tool Company
Ritmo/America
Robvon Rings RPS/ABCO RUB Valves
Salem Tube
SAPA Aluminum Schrader Bellows Division Sharon Tube
Southland Tube
Spears Spirax/Sarco Spraying System Stockham Valve & Fitting Taylor Forge Tylok Tube Forgings of America Tufline XOMOX Corporation US Steel Corporation Victaulic Company of America
Vintrol Inc.
Ward Mfg. Watson McDaniels Watts Regulator Company Wheatland Tube
Winters Instruments Weldbend
W.L. Plastics Westlock Controls Williams Valve Zavoda
