Parker CRK and CRB series direct acting check valves

Parker CRK and CRB series direct acting check valves can be divided into two categories: CRK and CRB reverse globe check valves and CRH pilot operated reverse globe check valves. Both series can be easily screwed into the valve body hole. The sealing from the inlet to the outlet at the contact position is achieved through the sealing lip on the end face of the valve body oil port and the flange formed by the machining center hole (similar to the shoulder formed by the top angle of a regular 118 degree drill bit). Grinding holes and sliding slopes for sealing are not required. The sealing of the screw in valve is achieved through a threaded sealing locking nut and O-ring