Roller Pump Dispenser Screw Type

A screw-type roller pump dispenser (also called a helical rotor pump or progressive cavity pump) is a specialized pump designed for precise, controlled dispensing of viscous fluids like oils, syrups, adhesives, and lubricants. Unlike standard roller pumps, these use a rotating screw (helical rotor) inside a stator to move fluid with minimal pulsation.

Best Screw-Type Roller Pump Dispensers

**1. Flux Pumps Helical Rotor Dispenser (Manual)

• Type: Hand-operated screw pump

• Flow Rate: 0.1–1 GPM (adjustable)

• Viscosity Range: Up to 50,000 cP (thick oils, grease, adhesives)

• Materials:

• Rotor: Stainless steel

• Stator: Food-grade rubber (chemical-resistant)

• Best For:

• Precision dispensing of gear oil, grease, or sealants.

• No electricity/air needed – manual crank operation.

**2. Tuthill Transfer Systems Screw Pump (Pneumatic/Electric)

• Type: Motor-driven helical rotor

• Flow Rate: 1–10 GPM (depending on model)

• Viscosity Range: Up to 100,000 cP

• Power Options:

• Air-powered (pneumatic) – explosion-proof.

• Electric (12V/24V/110V) – variable speed control.

• Best For:

• Industrial transfer of heavy fuels, asphalt, or molten wax.

**3. Graco Husky 1050 Air-Powered Diaphragm Pump (Alternative)

• Not a screw pump, but handles similar viscosities.

• Flow Rate: Up to 10 GPM

• Works Well For:

• High-volume transfers where screw pumps are too slow.

Key Features of Screw-Type Roller Dispensers

✔ Low Pulsation – Smooth flow (unlike peristaltic/gear pumps).
✔ Self-Priming – Can handle suction lifts up to 25 ft.
✔ Reversible – Some models allow backward pumping for clearing clogs.
✔ Precision Control – Ideal for metered dispensing (e.g., filling bottles).

Comparison Table

When to Choose a Screw Pump Over Other Types?

• VS. Peristaltic Pump: More durable for abrasive fluids.

• VS. Gear Pump: Better for ultra-thick liquids (e.g., grease).

• VS. Diaphragm Pump: More precise for dosing applications.

Top Recommendation

• For manual control: Flux Pumps Helical Rotor (best for workshops).

• For factories: Tuthill Pneumatic Screw Pump (heavy-duty).

Need help selecting a model for a specific fluid? Let me know your viscosity and flow requirements!