Week 2 Challenge : Surface meshing on a Pressure valve

Intially i taken the model in the topo deck and then geometrical cleanups have been done and then went to checks manager and geometrical checks and then execute anf found any errors are there and then came back and resolved the errors and ensured no triple and single cons but left triple cons if there is a justification for the presence and then again went for geometrical checks and found no error then in order to ensure a mesh the model must be closed so all the openings are closed and there formed triple cons i didnt delete because i justification for the presence and then went to mesh deck and then permiters and then length and there is awindow appeared so that selected perimeter and selected the model and given target length as 1mm and went to the quality criteria and enabled minimum target length as 1 and mesh parameters i have given minimum target length as 1mm and maximum as 1000mm that means i have set the minimum target nut not the maximum target length and element type is tria and performed the same for 3 and 5 mm. for 5 mm i was unable to generate mesh because the minimum length i have given as 5mm but at some places the the minimum length exceeding the model length thats why i was unable to perform mesh.thenafter i went to measure option to measure nodal distance and the distance is accurate to the target lenth in case of 1mm than 3 mm thats why target length as 1mm is the best.