Abstract: A seat pocket insert for a valve block may include an insert body extending, in an axial length, between a first end surface and a second end surface. Additionally, the second end surface may have a profile configured to sealingly engage with a seat of a valve. Further, a bore may be provided axially extending through the first end surface to the second end surface of the insert body.

Abstract: A modular valve tree may have two or more blocks. Additionally, a first block may have a flow passage therethrougt, with an inlet and an outlet and a second block may have a flow passage therethrough with including an inlet and an outlet. Further, an insert may be provided comprising sealing elements. The insert may be partially disposed within each of the first block and the second block and the insert has a throughbore fluidly connecting the first block outlet to the second block inlet. Furthermore, the sealing elements are configured to seal external surfaces of the insert against an internal surface of the respective flow passages. A retention system may retain the blocks in position and compress and engage one or more of the sealing elements.

Abstract: A bonnet assembly may be coupled to a valve block. The bonnet assembly may include a bonnet body extending, in an axial length, between a first and second end of the bonnet body. Additionally, the bonnet body may have a sealing surface on the second end. Further, a bonnet retainer nut may be provided with passage axially extending through a first end surface to a second end surface. The bonnet retainer nut may be disposed on the bonnet body such that a portion of the bonnet body is enclosed within the passage of bonnet retainer nut. Furthermore, the bonnet retainer nut may lock the bonnet body.

Abstract: A bonnet assembly may be coupled to a valve block. The bonnet assembly may include a bonnet body extending, in an axial length, between a first and second end of the bonnet body. Additionally, the bonnet body may have a sealing surface on the second end. Further, a bonnet retainer nut may be provided with passage axially extending through a first end surface to a second end surface. The bonnet retainer nut may be disposed on the bonnet body such that a portion of the bonnet body is enclosed within the passage of bonnet retainer nut. Furthermore, the bonnet retainer nut may lock the bonnet body.