Description
An 8 pitch feed screw is one of three interchangeable dispensing valve parts that set shot size and dispense rate on a Techcon TS5000 Series rotary valve. The screw rotates inside the valve body bore, and its thread pitch determines how much fluid moves per revolution. The 8 pitch option, marked HD-HO in this configuration, sits between the higher flow 6 pitch and the finer 16 pitch screws, giving a middle ground of dispense rate and shot accuracy for general production work.
Where These Dispensing Valve Parts Fit
- General purpose two-part epoxy and urethane dispensing where extreme shot accuracy is not the deciding factor
- Production cells switching between fluids of different viscosity without changing the whole valve
- Solder paste and grease metering that benefits from a mid-range flow rate
- Maintenance stock for lines already running the 6 and 16 pitch options, to round out coverage
The feed screw and the valve body bore wear as a pair. Replacing only the screw when the bore has also worn will not restore original shot accuracy, and replacing only the body while running a worn screw carries the same limitation the other direction. Tracking hours or shot counts on both parts together, rather than waiting for a visible defect on a finished assembly, keeps a TS5000 station inside its rated repeatability for longer between full valve rebuilds.
Color-coded collars on the feed screw make pitch identification fast on a busy line. A technician pulling a worn screw for replacement can match the collar color to the correct pitch without cross-referencing a part number sheet, which cuts changeover time on lines that run more than one pitch across different stations or products.
Dispensing Valve Parts Specifications
- Feed screw pitch: 8
- Configuration: HD-HO
- Valve platform: Techcon TS5000 Series rotary valves
- Alternative pitches available: 6 (higher flow, lower accuracy) and 16 (lower flow, higher accuracy)
- Suited to medium to high viscosity fluids in the 30,000 to 1,300,000 cps range
Order this feed screw when standardizing shot size across TS5000 stations running similar fluids, or as a maintenance spare alongside the matching valve body. Pair it with a compatible body, and browse Chemical Concepts dispensers, mixers, and nozzles for the matching valve body and syringe barrels. For more on how feed screw pitch trades off dispense rate against accuracy, see Techcon.
Need Help?
Need help choosing between 6, 8, and 16 pitch for your fluid and shot size target? Call (800) 220-1966 or email [email protected].
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