Bonzo, been studying the Worcester website and they do two 90' bends.
one type has a socket and rubber seal on both the flue gas inner pipe and the air intake outer pipe - part number: 7716191084
the other type has only a socket and rubber seal on the inner flue gas pipe and the outer pipe has not got a socket and is secured to the mating pipe by a metal twin screw sleeve. - part number : 7719002348
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!