Dual Function Circulating Valve
Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level dual function circulating valve manufacturers and suppliers,Website:, with professional factory, we are able to produce API and oilfield dual function circulating valve, welcome to contact us.1.IntroductionDual Function Circulating & Burst Disc Sub is designed as a circulating safety component within the Bottom Hole Assembly.Dual function circulating valve is the coiled tubing dowhole circulating tool with the two functions of shear pin and rupture disc. The circulation is made by break the rupture disc, and provide adequate circulation channels to pump the ball, or dropping the ball and applying the pressure the make the maximum circulation. The circulating valve is applied to all coiled tubing operation, and the rupture disc can be changed by screw plug2.Feature and benefits*Dual function design: Shear pin and rupture disc*Accurate rupture disc and shear pin measure setting*Large bore cycle3.ApplicationAll coiled tubing operationFishing and milling operationCementing and clean out operationCT Spec.（in）Max. OD（mm）Min. OD（mm）Dropping OD（mm）Length（mm）W.P. (PSI)（2 shear pin）Rupture Disc1.68742.86.3511.0202.5900psi1000PSI2000PSI3000PSI3500PSI4000PSI4500PSI5000PSI1.75044.56.3511.0202.5900psi2.12554.012.716.0241.01500psi2.25057.012.716.0241.01500psi2.37560.012.716.0241.01500psi3.12579.515.819.0264.01250psi
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