Fitting

I - Cutting off the pipe at rightangles is facilitated by using the pipe sawing device shown in the illustration on the left, which is for pipes having an external diameter from 6 to 42 mm.

Part No. :AV 6/42 ATTENTION : Do not use pipe cutters ! Pipe wall is not cut rightangled.

II - Well oil (not grease) the threads and cutting ring. Then push the nut and the ring over the end of the pipe as shown in the illustration.

If it is impossible or very difficult to puch the cutting ring over the end of the pipe, do not open out the cutting ring but file the end of the pipe to make it a little thinner.

III - Pipes of a smaller external diameter can be fitted direct into the couplings if they are screwed into appliances. First of all, tighten up the nut by hand until you can feel that it is binding on the cutting ring. Then press the pipe against the stop in the inner cone and tighten the nut by about threequarters of a turn. Make sure that you do not turn the pipe round with it. This makes the cutting ring grip the pipe, after which it is no longer necessary to press the pipe. For the final tightening give the nut another three quarters of a turn. When this is done the ring cuts into the pipe and pushes up a visible coller in front of the cutting edge.

IV - Pipes having a larger external diameter and all couplings which have to be made in free pipes are best given a pre-installation in the vice. The length of the spanner should be about 15 times the diameter the nut (if necessary extend it by slipping a pipe. For that you can use a special hardened pre-installation body which must be inspected permanently a gauge !

If you use a serical body in connection with the installation, take care that each pipe end is always fitted in the same inner cone with which the pre-installation was carried out.

The final tightening is made easier if the nut is loosened a few times so that fresh oil can get between the friction surfaces.

V - When the final tightening been carried out, undo the nut again and check up to see weather the visible collar thrown up fills the space in front of the cut. If not, tighten it up a little more. It does not matter if the cutting ring can be turned round on the end of the pipe.

After the joined has been completed and after each time it is tightened up without any extension on the spanner handle and without using any abnormal force.

The s t raight pipe end projecting into the coupling must have a minimum length which is twice the height of the nut (H). In the case of long pipe mains and those subjected to high stresses it is necessary for pipe clips to be fitted.

Adjustable couplings (evW, evT, evL, evGE) as well as KOR are delivered pre-installed at the stand pipe side. The final installation will be made in the respectively body with at least 1/2 turn after you have felt perceotible resistance.