Di Nicola manufactures rubber wedge gate valves in ductile iron alloys for over fifty years with sizes from 40 to 1200 mm and nominal pressure of 2.5 bar till 25 Bar . Di Nicola resilient wedge gate valves are coated with epoxy resin with minimum thickness 200 microns ,marked according to EN ISO 19 and face to face dimensions according to DIN 3202 , BS 5150 , ISO 5752 , ASME B16.10 , Flanges according to EN ISO 1092. 2 – 2531, BS4504 and various other standards . The company Di Nicola produces non-standard at the request of customers.