Change over duplex inline oil filter housing 1. Technical Specifications 1.1 Filter Housing Construction The filter housings are designed in accordance with international regulations. They consist of a filter head with screw-in filter bowls. Standard equipment: * ball change-over valve * two-piece filter bowl for SDDFDK 9901320, 2640, 3690 (as an option for SDDFDK 660) * connection for a clogging indicator * drain screw with pressure relief * pressure equalization line (for size SDDFDK 330 and above) 1.2 Filter Elements Max. Allowable D.P.: BN/HC:20bar; W/HC: 20bar V: 210bar 2. Description Mounting as inline oil filter Temperature range - 10 ℃ ~ + 100 ℃ Seals …