Composite water gas valve shaft box cover Valve box manhole covergas valve box covergas valve cover water valve box cover Basic parameter Product models jq-v200c Production technology compression molding Material smc (sheet molding compound) Net weight 7.20 kg Loading class c250 Hinged&gasket yes Clear opening 242mm Working temperature -50-200 Cover diameter 200mm Test approval ce sgs Shape round Service life >30 years Lock style screw Warranty 2 years Color optional Place of origin quanzhou , china Advantages of composite water gas valve shaft box cover : 1, higher stretch resistance and bend resistance , comply with en 124-1:2015, en 124-5:2015 . 2, anti-theft , no cycle value . 3, light-weighted 4, durable service life 5, anti-corrision , anti-slip 6, uv-proof and v0-flammability rating 7, insulation 8, free design