The MV Screwed Sight Glass Fittings is a DIN 11851 weld neck for welding into or onto vessel wall with a 50 to 150mm viewing diameter.
The MV Screwed Sight Glass Fittings comes complete with a glass disc, gaskets and slotted cover nut.
Visit the Visilume Ltd website for more information on MV Screwed Sight Glass Fittings