Kelly Valve

Driscoil Equipment can supply Kelly valves for onshore and offshore drilling operations, including new, used, and refurbished units subject to availability.

The valve provides a means of quickly shutting off well pressure through the drill string when required during drilling, well-control, tripping, or other pressure-control operations.

Technical Specifications

Specification Typical Options

Equipment Kelly Valve / Kelly Cock

Application Drilling & Well Control

Valve Type Ball Valve

Configuration Upper / Lower Kelly Valve

Nominal Size Approx. 2-9/16" – 4-1/2"

Working Pressure 5,000 – 20,000 psi

Connection API Drill Pipe / Tool Joint Thread

Bore Full Bore / Reduced Bore

Body Material High-strength alloy steel

Ball Material Hardened alloy steel / corrosion-resistant materials

Seat Type Metal / resilient seat depending on design

Operation Manual

Service Standard / H₂S service depending on specification

Temperature Manufacturer-specific

Standard API / manufacturer specification

Application Location Onshore / Offshore.

Kelly Valves for Sale & Lease

Driscoil Equipment offers Kelly Valves for sale and lease for onshore and offshore drilling operations. Available in upper and lower Kelly valve configurations, with high-pressure, full-bore designs and various drill string connections. Kelly valves provide reliable drill string isolation and pressure control during drilling and well-control operations. New, used and refurbished options are available subject to equipment specifications and availability.