Product Description

Suitable for all drilling pressures. Valve assembly consists of valve body, valve insert and knock-on plate. Valve insert is secured to the valve body by a strong knock-on plate nut which minimizes the entry of solids such as lost circulation material under the insert and between the valve striking surface and insert. The heavy and extra strong integral driving lugs on knock-on plate nut ensure easy assembly and disassembly when changing the valve insert. The lower valve stem with flat end facilitates holding in the vice for insert replacement without damaging the guide area. The face as well as diameter of the valve body are threaded. Both threads on valve body are coated with anti-seize compound to prevent corrosion. This facilitates replacement of insert.Selectively hardened lower flange face of valve body transmits severity of impact, if any, to flat cross arms of seat instead of tapered sealing surface. The valve body is placed square and flat on the valve seat. There is no shifting due to