| Business | Phone |
| Davis Control Corp 5011 Grand Ave, Pittsburgh 15225 | (412) 262-5633 |
| Edward C Smyers Co Inc 223 Fort Pitt Blvd, Pittsburgh 15222 | (412) 471-3222 |
| Epr Systems Inc 3113 Babcock Blvd # 1, Pittsburgh 15237 | (412) 931-9444 |
| Industrial Valves & Fittings 3200 Smallman St, Pittsburgh 15201 | (412) 232-3880 |
| Kerotest Manufacturing Corp 5500 2nd Ave, Pittsburgh 15207 | (412) 521-4200 |
| Linsley-Morrissey Sales Co 3534 Laketon Rd, Pittsburgh 15235 | (412) 242-8850 |
| Zenith Supply Co 50 32nd St, Pittsburgh 15201 | (412) 391-9570 |