Coaxial valve with bypass valve has inlet and outlet pipes with inner threading for screw fixtures, connecting part with duct and seals

摘要

The inlet and outlet pipes from the flow duct are radially outward leading, internally threaded ducts (1',2') into which fit fixtures (4) in the form of screws from outside. The fixtures penetrate a connecting part (3) which has at least one duct (3',3). The fixtures each have a duct (4') which joins the flow duct or the duct in each pipe to the at least one duct of the connecting part. The connecting part has a seal (21) at least in the parts where the screws penetrate it. A seal (26) is between the screw head and connecting part.