Core Tube and Wire Connector Core Tube and Wire Connector lenthezhongwen (Industrial) (OP) 3 Jun 16 02:10 Where is the "core tube" on a valve and the "wire connectors". I have a supplier that are sending these parts of the valve loose and not tight enough. Hope this makes sense. RE: Core Tube and Wire Connector MikeHalloran (Mechanical) 3 Jun 16 04:25 It would probably make sense to someone who has the valve on their desk, or maybe a cut sheet for the valve, but since you didn't even come close to identifying the actual valve, we probably can't help much. Mike Halloran Pembroke Pines, FL, USA RE: Core Tube and Wire Connector lenthezhongwen (Industrial) (OP) 7 Jun 16 08:46 Sorry. It is for a 4WE6 rexroth. RE: Core Tube and Wire Connector hydroman247 (Mechanical) 9 Jun 16 09:05 The core tube is the metal tube in the centre of the coil. Remove the plastic screw on the end, slide off the coil and there is the core tube. They usually screw into the main valve body or are clamped on with bolts.