10.16 In case of multi impression tools, the filling of the cavities must be balanced. Maximum accepted difference is 2%.10.17 With finalized parameter settings, plastic leak from the nozzle, freeze off or string pulling is not acceptable.10.18 In case of direct feed to the part and for parts produced with glass fibers, shut off valves are preferred. Shut off valves in general are to be operated with hydraulic, except for PMMA parts to be produced in our Plant 3, in Túrkeve. For those, pneumatic operation is preferred.10.19 Tools with floating plates must have hot runner fixed to backplate. Contact must remain between the hot runner and machine nozzle.