Water tight valve having sealed flying leads
A water tight valve with sealed flying leads is presented. The sealing is provided by an adhesive heat shrink collar that is affixed to the insulation of the flying leads. An overmolding is used to provide further protection of the terminal/wire contact interface and to seal against the exterior surface of the collar. The profile of the collar also provides a tortuous path that further prevents the ingress of any conductive fluid to the wire/terminal contact area.
1. A solenoid controlled water valve, comprising:
a solenoid mounted on a valve body for control of a valving member housed therein, the solenoid having a pair of electrical terminals;
a pair of wires attached to each of the pair of electrical terminals, each wire having insulation therearound, the insulation terminating at a termination end to expose a portion of the wire attached to the electrical terminal;
a pair of adhesive heat shrink collars attached to the insulation of each the pair of wires in close proximity but displaced from the termination end; and
an overmolding covering at least the pair of electrical terminals of the solenoid and at least a portion of the wires, including the pair of collars.
2. The solenoid controlled water valve of claim 1 , wherein the overmolding extends beyond the heat shrink collars to encapsulate the heat shrink collars within the overmolding.
3. The solenoid controlled water valve of claim 1 , wherein the pair of adhesive heat shrink collars includes adhesive on an interior surface thereof such that an adhesive bond between the interior surface of the heat shrink collar and an external surface of the insulation of the wire is formed.
4. The solenoid controlled water valve of claim 3 , wherein the adhesive bond forms a water tight seal between the heat shrink collar and the insulation of the wire.
5. The solenoid controlled water valve of claim 1 , wherein the overmolding comprises a plastic material.
6. The solenoid controlled water valve of claim 5 , wherein the overmolding comprises polypropylene.
7. The solenoid controlled water valve of claim 6 , wherein the insulation comprises polyvinylchloride (PVC).
8. The solenoid controlled water valve of claim 1 , wherein the pair of collars are rectangular-shaped to provide additional surface area and bends in a path along an interior of the overmolding from an exterior of the overmolding to the electrical terminal.
9. The solenoid controlled water valve of claim 8 , wherein each of the pair of collars are approximately ⅛ inch in width.
10. The solenoid controlled water valve of claim 9 , wherein each of the pair of collars are positioned on the insulation approximately 1/10 inch from the termination end.