When your business is up and running, you don't have time or money to waste. You want a clean, safe operation that runs at peak efficiency. What you don't want are kicks and blowouts that leave drilling fluids all over the rig floor. You need reliable valves to take the pressure off and ease your mind.
Don Mashburn Inc. has the answer. Our valves pass rigorous inspections and quality control testing utilizing the latest in CMM technology so that only the finest quality makes it into your operation.
Kelly Valves- both upper and lower valves that meet API specifications and our own stringent testing on one piece valves that save space in the string. Two-piece valves that are strong, durable, and easy to handle. Standard and Full-Opening available. The standard working pressure is 10,000 psi, but a higher pressue rated valve is available.
Safety Valves- designed to be stabbed into the top joint of the drill pipe or tubing at the rig floor and closed quickly in case the well kicks. After weight material is added to the mud, the kelly can be reconnected, the safety valve opened, and circulation initiated.
Inside B.O.P. Valves- top-vented valves that protect your swivel, standpipe and pumps from drill string kicks.
Two Piece Side Entry Subs- machined and thread locked, NOT WELDED, for added strength and reliabity. These subs are manufactured with Internal Stub-Acme Threads.
At Mashburn Machine & Fabrication, we keep the most popular valve sizes in stock at all times, and we custom manufacture special items at your request, with delivery times that lead the industry. Mashburn Machine and Fabrication won't keep you waiting for valves or parts. In this business, your're always on the move.
When your business is up and running, you don't have time or money to waste. You want a clean, safe operation that runs at peak efficiency. What you don't want are kicks and blowouts that leave drilling fluids all over the rig floor. You need reliable valves to take the pressure off and ease your mind. 
