double valve float collar The Double Valve Float Collar has all of the Features of The Standard Cement Float collar and provides the added assurance of sealing when debris prevents the upper valve from closing. Internal parts are made of high quality material to achieve high strength and PDC drillable. The Double Valve Float Collar are also available in Non-Rotating Plate that is require with Non-Rotating Cementing Plugs. Crimson Double Valve Float Collar are available for casing Sizes 3 ½� to 30�. Zhongshi is specialized in produce float equipment, reamer shoe, double valve float collar, stab-in float collar float shoe and non-rot float collar float shoe etc, Our products are very popular, if you are interested in our products, please contact us as soon as possible.