| A | GE MOTORS | PEPPERL & FUCHS |
| AALIANT | GENERAL MONITORS | PGI |
| ABB CONTROLS | GO SWITCH | PHOENIX CONTACT |
| ACTION INSTRUMENTS | GOULDS PUMPS | PIPER BALL VALVES |
| ANDERSON GREENWOOD | GREER HYDRAULICS | POSI-SEAL |
| ANDERSON GREENWOOD | PRECISION DIGITAL | |
| AQUA-CHEM | H | PRECISION SCIENTIFIC |
| ASCO | HALLIBURTON SERVICES | PROTECTOSEAL |
| ASHCROFT | HARDY INSTRUMENTS | |
| ATLAS COPCO | HART SCIENTIFIC | R |
| HAYWARD | RACO | |
| B | HIMA | RALSTON INSTRUMENTS |
| BADGER METER | HIOKI LEAK SENSOR | REDLINE CONTROLS |
| BALDOR MOTOR | HiP PRESSURE FITTINGS | RELIANCE MOTOR |
| BARBER COLEMAN | HONEYWELL | REXA |
| BARKSDALE | HYTORK | ROBERTSHAW |
| BARTON INSTRUMENTS | ROCKWELL AUTOMATION | |
| BAUMANN | I | ROLLWAY BEARINGS |
| BELL & GOSSETT ITT | IDECO PUMP STUDS | ROSEMOUNT |
| BENTLY NEVADA | INGERSOLL DRESSER | ROSEMOUNT ANALYTICAL |
| BETTIS | INGERSOLL-RAND | ROTORK |
| BIRDWELL | INNOVATIVE SOLUTIONS | ROVALVE |
| BRISTOL COMPRESSORS | INTERTEC | RUBBER FAB |
| BROOKS INSTRUMENTS | INVENSYS | |
| BROWNING V-BELT DRIVES | ITM INSTRUMENTS | S |
| BTG | ITT INDUSTRIES | SAGE |
| BUCKHORN | SEAL MASTER BEARINGS | |
| BURLING INSTRUMENTS | J | SENSIFLO |
| JOGLER | SHAFER | |
| C | SHIPCO PUMPS | |
| CALL-SABER | K | SIEMENS MOTOR |
| CARRIER | KAYDON | SIEMENS PARTS |
| CASHCO | KAYE MacDONALD | SIMPSON ELECTRIC METERS |
| CATERPILLAR | KEMP | SKF BEARINGS |
| CLARK LIFT | KIDDE FIRE | SKINNER VALVE |
| COLE-PARMER | KIDDE-FENWAL | SMART SENSORS |
| COOPER-ATKINS KITS | KNF NEUBERGER | SMITH METERS |
| CORNERSTONE VALVE | KOP-FLEX COUPLINGS | SOR |
| CRANE DUO-CHEK | SPENCE | |
| CRYSTAL ENGINEERING | L | STAHL |
| LAB SAFETY SUPPLY | STARRETT | |
| D | SWAGELOK | |
| DANFOSS | M | SYSTEM PLAST CONVEYOR |
| DANIEL FLOW METERS | MAGNETROL | |
| DODGE | MARSH BELLOFRAM | T |
| DOW CORNING | MASONEILAN | TAYLOR |
| DRUCK | McDANIEL | TBV |
| DWYER INSTRUMENTS | McMASTER-CARR | TELEDYNE |
| DYNASONICS | MERIAM | TEL-TRU |
| MERIAM MANOMETERS | TESCOM | |
| E | MICRO MOTION | TESTO METERS |
| EDWARDS | MICRO SWITCH | TOPWORX |
| EL-O-MATIC | MONARCH SENSORS | TRANSCAT |
| EMERSON PROCESS MANAGEMENT | MOORE | TRANSMATION |
| EMSCO PUMP STUDS | MORSE CLUTCHES | TRERICE INSTRUMENTS |
| EXTECH METERS | MSA | TRIAD MEASUREMENT |
| TURCK PROCESS AUTOMATION | ||
| F | N | |
| FCI | NATIONAL PIPE | U |
| FENNER | NATIONAL PUMP STUDS | U.E. |
| FENNER DRIVES | NGK | UFM |
| FIELDQ VALVE AUTOMATION | NICE INSTRUMENTS | |
| FIKE | NSK BEARING | V |
| FIREYE | NTN BEARING | VAISALA TRANSMITTER |
| FISHER SCIENTIFIC | NuFLO | VALVTECHNOLOGIES |
| FLO FAB PUMPS | NUPRO | |
| FLUKE PUMPS | W | |
| FMC | O | WALLACE & TIERNAN |
| FOXBORO | OBRIEN | WESTLOCK CONTROLS |
| FRANKLIN MOTOR | ORANGE RESEARCH | WHITEY VALVES |
| FSI | ORBIS | WIKA |
| FW MURPHY | ORBIT VALVES | WILKERSON |
| G | P | Y |
| GARDNER-DENVER | PARKER | YALE LIFT |
| GATES BELTS | PBM VALVE | YARWAY |
| GAY FIRE PROTECTION | PEERLESS PUMPS | YOKOGAWA |
| GE GENERAL EASTERN | PENBERTHY |