Roller design (PTL) vs Shoe Design (PT)
The roller design in PTL pumps has been proven to be successful in the lower pressure applications until 4 bars, since lubrication is not really necessary between hose and roller and the radial force are very low allowing the rotation. To protect the hose, the shoes operate in grease.
For higher pressures until 15 bars, from approximate 4 bar, the rollers do not rotate anymore and the angle at the point of compression becomes fairly steep, which acts negatively on the hose. In this case, the shoe design of PT pumps has been proven to be more efficient, since they act more gentle on the hose.
To protect the hose, the shoes operate in a bath of lubricant. Depending on the application, different oil types or glycerin based can be used.
Roller design Close angle
Shoe design Large angle
Features & Benefits
No mechanical seal or stuffing box and other rotating equipment in media that can cause leakage.
Tapflo pumps contain the fluid in a hose, requiring only one component to be changed, which means that maintenance costs are considerably lower than other pump types.
Easy emptying and draining.
Below < 70 dB at 1 meter.
Tapflo pumps can self-prime up to 9.8 metres and run dry indefinitely.
Tapflo pumps are accurate up to ±0.5% across their total speed range, with the additional benefit of process control capabilities which allows easy installation.
The PTL & PT range is designed and manufactured for heavy duty industrial use, and advanced elastomer technology ensuring accurate and repeatable performance that truly outperforms all other pumps.