The petol refinery wrench is both a pipe wrench and valve wheel wrench in one. This wrench is used in gas processing, petrochemical and oil refineries.
Valve Wheel Wrench
A valve wheel wrench has a U shaped opening on one end that grips a valve wheel and reduces slippage when working in tight spaces or overhead spaces. The other side is typically a standard adustable wrench allowing the user to have two tools in one. These tools work by using leverage when attaching it a stuck valve wheel. These tools have become a necessary part of anyone managing large facilities.
Made by Gearench in Texas, they provide a full line of wrenches for the oil and gas industries.
Reed Valve Wrench
Reed Tool makes 8", 10" and 12" valve wrenches that have become the industry standard, their most popular is the Reed Rf10 refinery wrench.