Lead Washer for Connecting Copper Coil to Chlorine Cylinder Valve. If a leak is found here, the lead gasket between the chlorine cylinder valve and chlorinator inlet assembly can be secured by tightening the screw used to fasten the chlorinator to the valve. It should be apparent if this screw needs tightening, so do not over tighten it. If you feel the lead gasket needs replacing, use only those supplied by sHITAL ENTERPRISES with the original equipment. If you need more, please contact us.