Tsieina, Haearn hydwyth, Haearn Bwrw, Plât Deuol, Plât Dwbl, Wafer, Flange, Lugged, Falf Gwirio, Gweithgynhyrchu, Ffatri, Pris, RF, RTJ, trim 1, trim 8, trim 5, PTFE, Viton, Metel, sedd, mae gan ddeunyddiau falfiau ddur carbon, dur di-staen, A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, A105(N), F304(L), F316(L), F11, F22, F51, F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy, Alwminiwm Efydd ac aloi arbennig arall. Pwysau o Ddosbarth 150LB, PN10, PN16, JIS 10K, JIS 5K