| Schlumberger Artificial Lift (Midland, TX)
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| Scot Pump (Fort Lauderdale, FL)
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| Seal Pac Professional Svc (Baytown, TX)
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| Sekas Process Equipment (Theodore, AL)
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| Selmer Manufacturing Inc (Columbus, OH)
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| Semcor Equipment (Keyport, NJ)
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| Service Pump & Supply Co (Huntington, WV)
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| Servi-Sel Inc (Bethel Park, PA)
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| Shannon Pump Co (Merced, CA)
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| Shape Inc (Pleasanton, CA)
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| Shaw Equipment (Norcross, GA)
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| Sheets Well & Pump Svc (Richmond, IL)
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| Shellback Manufacturing Co (Hazel Park, MI)
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| Shetler Pump Repair (Millington, MI)
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| Shippensburg Pump Co (Shippensburg, PA)
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| Shurflo Llc (Cypress, CA)
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| Sidewinder Pumps Inc (Lafayette, LA)
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| Signet Scientific (Madison, WI)
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| Simflo Pumps Inc (Willcox, AZ)
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| Simmons Pumps (Lubbock, TX)
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| Sims Pump Valve Co (Hoboken, NJ)
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| Skidmore Pumps (Benton Harbor, MI)
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| Slater Brothers Well Drilling (Haledon, NJ)
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| Smith & Lovelass Inc (Conyers, GA)
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| Smith Precision Prods Co (Newbury Park, CA)
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