Job description. Payzone Completion Services is looking to hire a shop foreman with 5 years experience of rebuilding varies size frac gate valves, flowback equipment and running a shop safely and efficient. Pay will be discussed over the phone. Responsibilities. Knowledge rebuilding 7" 15k & 10k, 5 1/8, 4 1/16 15k & 10k, 2 9/16 15k. FC & FLSR style manual and Hydraulic valves. Weekly Parts inventory. Hiring shop employee's. Preparing equipment fo...