Our range of Diamond Series Progressive Cavity Pumps is characterised by a modular design covering numerous models and sizes, enabling capacities up to 420 m³/hr and discharge pressures up to 480 meters. The Diamond Series was designed & built with high modularity in mind so that each pump element can be specifically selected based on the application requirements and customisation so that even if the product use varies over time, the product can be adapted and upgraded to renewed process specifications. As a result, there are a plethora of options and accessories that enable progressing cavity pumps that can be easily tailored to almost any site requirement.
There are seven construction variants based on the type of product to be pumped, each with its screws & hopper designs.
DH Series
The DH Hopper Pump is part of Tapflo’s Progressive Cavity Pump Range. The DH series is the standard model with a rectangular hopper and auger feeding onto the hydraulic section. Suitable for up to 18% solids concentration which do not bridge.
DHS Series
The DHS Series features a rectangular hopper & oversized auger suitable for highly viscous materials and up to 28% solids concentration which do not tend to bridge. The screw shaft features a special integrated joint protection system.
DHP Series
The DHP Series features a wide throat hopper with a bridge breaker shaft & auger feed onto the hydraulic section. Suitable for materials that tend to bridge or are easily compressible or contain solids such as whole fruits, chopped tomatoes, grapes and doughs.
DHB Series
The DHB features a wide throat hopper with a double bridge breaker shaft and enlarged auger feed. Suitable for highly viscous materials with solids concentrations up to 35%, which have a tendency to bridge. The screw shaft features a special integrated joint protection system.
DHSB Series
Similar to the DHS series, the DHSB series is fitted with a special “B” Module which features a special wheel device which directly feeds the auger with materials which are non-flowing with solids concentrations up to 40% with blocks that bridge. This design variant is beneficial for the transfer of products which tend to plasticise. The screw shaft features a special integrated joint protection system.
DHS-T Series
Similar to the DHS series, the DHSB series is fitted with a special “B” Module which features a special wheel device which directly feeds the auger with materials which are non-flowing with solids concentrations up to 40% with blocks that bridge. This design variant is beneficial for the transfer of products which tend to plasticise. The screw shaft features a special integrated joint protection system.
DHE Series
The DHE series has an extremely compact design with a large eccentric hopper, is trolley mounted and has been specifically designed for use in the wine industry in conjunction with destemming devices and crushers. Generally used for the pumping of crushed grapes with or without stems. The hopper is fitted with a safety mesh and guard for the drive system, which features a bevel geared motor to reduce the overall footprint. The trolley handles are designed in such a way to facilitate the mounting of control panels. Level probes can be fitted to the hopper to enable automatic shut-off to protect against dry-running.
