Flange adapters are designed to be installed on to API wellheads and provide a transition between the xmas tree and the well intervention pressure control equipment. It is important to note that, the wellhead flange adapter should always be compatible with the through bore of the wellhead it is being installed on to. Flanged and threaded wellhead adapters provide a direct connection between surface pressure equipment and the wellhead. Two types of wellhead adapters are available – union box by API flange type or union box by pin thread type.
The flange type adapter covers all API flange sizes pressure and service environment requirements. The pin threaded adapter is made up to the wellhead lift thread or special threaded box connection and is available to meet required pressure and service environments.