We have gone back to using PVC screen wrap rather than beaming paper, due to difficulties in obtaining adequate supplies of the beaming paper.
We have been notified by API that they have withdrawn from publication the Fourth Edition of API/IP 1583 Specifications and Laboratory Tests for Aviation Fuel Filter Monitors with Absorbent Type Elements.
During a recent change out leakage was observed around the flat gasket (Velcon PN G-0313). We are recommending at the next change-out, or per your company’s QC fuel quality recommendation, a change to the bolt assembly.