The Kelly Valve/Drill Pipe Safety Valve/Kelly Cock is a full opening valve that provides positive pressure control of the fluids in the drill string. These valves can be used as a drill pipe safety valve or upper kelly valve to control blowout pressures, or as a lower kelly valve to prevent loss of drilling fluid when the kelly is disconnected.
The valve seals in both directions with metal to metal seals. Available in 10, 000 psi &15, 000 psi working pressure as standard. Inner bore of the sub and critical parts are coated with the hard chromium or nickel. It has an exclusive corrugated spring to ensure a positive seal. The valve uses a hexagon socket on the operating stem and has positive stops in the open and closed positions.
Dawnrays is a licensed manufacturer of kelly valves under API Spec 7-1.
When ordering, please specify:
1. Kelly size and type (Upper or Lower)
2. Connection size and type
3. Working Pressure
4. Bore
Dawnrays Drilling Tools Co., Ltd is a professional manufacturer of all kinds of oil drill tools. Equipped with well-trained technical personnel and an advanced workshop, our focus has always been on quality management and technical innovation. All Dawnrays' Products meet and exceed API and ISO industry standards. Each process, from raw material purchasing to product delivery, is under the control of our quality management system, which ensures the punctual delivery of quality products.
What Dawnrays commitment is not to provide expensive tools but tools that are handy and efficient. Our products, service and delivery capacities have made Dawnrays Drilling Tools Co., Ltd well recognized by customers from domestic and overseas.
The complete range of solutions for from the drilling to workover operations includes:
A. IBOP Tools
B. Drilling and Coring Tools
C. Fishing Tools
D. Milling & Cutting Tools
E. Wellhead Tools
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