... "-4", union-type sight glass (sight glass,sanitary sight glass)Pipeline MirrorFeatures Specifications:Sell Sanitary Clamped Sight Glass(sight glass,union-type ... Sight Glass(sight glass,union-type sight glass,sanitary sight glass)Product name: Sanitary Sight GlassType: Clamped endsMaterial quality: AISI304, AISI316LStandard: DIN ...