Techcon TS5420 Needle Valve Repair Kit

Description

The Techcon TS5420 valve repair kit supplies the main dispensing valve parts needed to rebuild a TS5420 or TS5420SS needle valve after normal wear, material buildup, or seal fatigue starts to affect shot control. The kit belongs with maintenance teams that keep adhesive, sealant, primer, activator, oil, or coating dispensing stations in service instead of replacing the full valve assembly when the fluid side can be restored.

Where dispensing valve parts fit

The TS5420 is a normally closed needle and seat valve for low to medium viscosity fluids. It uses pneumatic actuation with an internal spring return, and the valve can also be connected for air close operation when the system requires it. A repair kit is useful when the valve begins to weep at shutoff, loses repeatable deposits, or needs a planned rebuild before a production cell goes back online. The parts support precise deposits across a wide range of shot sizes, including small dots and short beads used in electronics, assembly, and coating work.

Kit contents and handling

The repair set is the broad service kit, separate from a smaller seal-only kit. It includes the needle and piston assembly, fluid inlet fitting, seal kit, nozzle, nylon washer, Mylar washer, retaining ring, and related wear components. During service, release fluid pressure, disconnect the line and air hose, separate the valve sections carefully, and keep the work surface clean so the new seals do not pick up grit. O-rings and seals should be lubricated where the service guide calls for it, while dry components should stay dry. If the same bench also runs cartridge adhesives, store the correct mixing nozzle, 2 part mixing nozzle, and jb weld mixing nozzle inventory away from valve spares so kits are not mixed during a repair.

Ordering dispensing valve parts

Order this kit when a TS5420 valve needs more than a single O-ring change and the valve body, controller, and mounting setup can remain in place. For related spray valves, needle valves, tips, and service accessories, browse dispensers, mixers, and nozzles. Manufacturer background is available from Techcon.

Need Help?

Need help confirming TS5420 kit fit, seal condition, or valve rebuild timing? Call (800) 220-1966 or email [email protected].