The height of the manifold presentation flange above the deck or working platform is the distance between the bottom edge of the manifold presentation flange and the top of the deck or working platform . This distance should be a minimum of 900mm.The distance may be increased but, in any case, should not exceed 1400mm. The height should also take into account STS requirements and the possibility of fitting additional hose saddles.Fitting a hose to a flange face that is lower than the saddle can place unnecessary strain on the flange interface and make it vulnerable to leaking.