... . ISO2037,DIN, IDF, SMS, JIS 3.sight glass(sight glass,stainless steel sight glass) Stainless Steel Sight Glass1) Specification: 1/2"-6", applied to ... can manufacture them according to any design.Look at the picture first, and then see the technique parameter in the table ... .0139.04 102 194.0 119.0154.0sight glass(sanitary sight glass,stainless steel ...