Tank pressure manways are available in stainless steel SS304 or SS316 (some are special order). Depending on the size of your tank, your tank manway
Tank Manway, Eliptical Shadowless 22 x 18 x 130mm - Sanitary / EPDM (2 Pack)
Tank Manway, Eliptical Shadowless 22 x 18 x 130mm - Sanitary SS304 / EPDM
Manways, Extensions and Tank-Top Sumps with Double Ring Manways - Highland Tank
14x18 Elliptical Manway, 3D CAD Model Library
Stainless Steel Elliptical Manway for Tank/Vessel - China Manhole, Manway
Connection Type(s): Weld Connection Size(s): 22 in. / 18 in. Stainless Steel: SS304 Materiall: EPDM
Tank Manway | Eliptical Shadowless 22 x 18 x 130mm - Stainless Steel SS304 / EPDM - Glacier Tanks
Catalog of stainless steel manways
Manways, Extensions and Tank-Top Sumps with Double Ring Manways - Highland Tank
Manways, Extensions and Tank-Top Sumps with Double Ring Manways - Highland Tank