Alfagomma Slangpilaar Interlock G2 ORFS Wartel DN25 1.3 16 Manometers H1243330 161600 PFL251630 1216863 blank filter Element H1243330 161600 PFL251630 1216863 DN25 M30 H1722411 161200 DAVH2519G2 1254471 Alfagomma Slangpilaar Interlock G2 ORFS Wartel DN25 1