CS-UNIVERSE (UNV)  SERIES HPHT SAFETY VALVE

INTRODUCTION

COSL CS-UNIVERSE High Pressure safety valve is non-equalizing surface controlled tubing retrievable  safety valve, and it is connected to the surface emergency shut down system through hydraulic  control line. The safety valve structure consists of rod piston, body metal-to metal sealing connection  and curved surface flapper. This valve is NC type and when the pressure inside the hydraulic control  line gets released, the flapper will close automatically and the well will be closed. COSL CS-UNIVERSE High Pressure safety valve is designed and manufactured strictly in conformance  with API Spec 14A procedure. The safety valve rod piston resets by the spring and the piston seals  with non-elastomeric dynamic seal assembly. 100% metal-to-metal sealing is very reliable when the  valve is in the closed position. In addition to the metal-to-metal sealing, there is a second-grade soft  sealing on the flapper, which can meet leakage standards stricter than API Spec 14A.

FEATURES

◎ API-Q1 and API-14A quality control procedure insure the integrity of design and manufacture; 

◎ Housing seal utilizes metal-to-metal sealing with advanced threads and non-elastomeric seal ring; 

◎ Metal-to-metal sealing technology, can realize absolute metal-to-metal sealing and containment  of wellbore fluids when the valve is in the closed position; 

◎ Non-elastomeric dynamic seal assembly, can withstand high pressure; 

◎ High pressure sealing, to 20000 psi, Temperature 232℃ .

Note: Other specification products are available.