The Axiflow Technologies STS Standard Series of pumps consists of four (4) primary pump sizes. Each pump size has up to five (5) different screw pitches which gives you the flexibility to customize each pump specifically for your application. The smallest STSC50 size is only available is a C-face connection. The STS70 and STS90 are available in both C-faced connection or bare shaft with coupling. The largest pump, the STS125, is only available in bare shaft with coupling design:
All standard series pumps are available in standard 3A and EHEDG design as well as aseptic design. Pressure ratings on the standard series pumps range from 175 PSI to 350 PSI differential depending upon screw pitch.
Capable of discharge pressures up to 725 PSI (differential), the DF Series pumps are ideal for large high pressure drop pasteurizers. Until now, whenever a process called for a positive displacement pump capable of pressure above 300 PSI, the only option processors have had was to use a homogenizer without a homogenizing valve. This type of equipment has a large footprint, is expensive and is very maintenance intensive. Additionally, these pumps typically cause tremendous pulsation.
The enemy of the homogenizer is air! This can cause severe damage and drastically increase maintenance costs. The same twin screw technology that enables you to pump up to 60% air on the Axiflow STS Standard Series pumps allows the high pressure series pumps to convey the air through the pump with damage. Designed with a double mechanical seal with a flush, these pumps are also capable of running dry for extended periods of time
The DF High Pressure Series pumps come standard with an all stainless steel wet end and bearing housing that is machined completely out of 316L billet stainless steel. They can also run at speeds up to 3,000 RPMs. This means that they can perform process as well as CIP—just like the standard series Axiflow pumps.