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Cartridge Block Valves 21 tracks Normally Closed Blue
equivalent Emhart 191-7705-1
Cartridge Block Valves 21 Tracks Normally Open Red
equivalent Emhart 191-7704-1; 59-27616; 59-27242-A
Normally Open Blue Cartridge for BV 21 tracks and for BV valves 26 tracks
equivalent in reverse color to ref EMHART 59-27242 / 191-8273 / 191-7704 / 59-27616
Normally Closed Red Cartridge for BV 21 tracks and for BV valves 26 tracks
reversed color equivalent to ref Emhart 59-27241 / 191-7705 / 191-8274 / 59-27677