Progressive Cavity Pumps for Viscous and Abrasive Media
Reliable, low-pulsation pumping for challenging fluids – ideal for wastewater, chemical, food, and industrial applications.
Modular Pump Solutions for Complex Flow Requirements
We supply a wide range of progressive cavity pumps designed for precise, low-pulsation handling of viscous, abrasive, and solids-laden fluids. Our offering includes standard, metering, macerator, open hopper, semi-submersible, and hygienic variants – each engineered for specific process needs. These pumps form part of our broader positive displacement portfolio, which also includes dosing, diaphragm, rotary, and API-compliant pumps for specialised industrial applications.
With conveying capacities from 30 L/h to 500 m³/h and pressures up to 48 bar, our progressive cavity pumps deliver reliable performance, flexible installation, and easy maintenance across sectors including wastewater, chemical, food, and pharmaceuticals.
These industrial pumps form the basis of the modular concept that supports all SEEPEX progressive cavity pumps. They are ideal for applications in ceramics, chemicals, biochemicals, dyeing, paints, environmental technology, fish processing, food, beverages, oil and natural gas production, cosmetics, petrochemicals, pharmaceuticals, water and wastewater treatment, textiles, glues, adhesives, mastics and sealers in the transportation and construction markets.
For over 30 years Barr + Wray have been specifying and selling progressive cavity pumps into the process market. We offer an extensive range of Positive Displacement pumps and spare parts to suit almost all industries.
Seepex open hopper pumps handle viscous to semi-solid products with low or no flow-ability. They come in 9 ranges with multiple variations within each range and are suitable for use in nearly all industrial sectors.
Suitable for draining basins, swamps, tanks, pits and containers of every kind. They convey abrasive or corrosive conveying products with low to high viscosity. Individually sized and designed for the application, they are easy to maintain and have low operating costs. Overall, these semi-submersible pumps are a cost-effective alternative to other pump systems.
Seepex food pumps are used in the pharmaceutical, food, cosmetic and chemical industries or wherever a clean, sterile and hygienic atmosphere is required. They comply with the most stringent hygiene regulations including; FDA, 3-A Sanitary Standards and EHEDG.
Seepex metering pumps achieve a metering accuracy of ±1%. They’re used wherever low to highly viscous media, media containing solids and chemically corrosive media are processed, and all with low pulsation and to the exact drop.
Barr + Wray Range wobble pumps work solidly in many industrial sectors.
Solid or fibrous components in pumped media can quickly represent a hazard to pumps, downstream plant components or piping. Seepex macerators effectively shred coarse materials and ensure pump-friendly pumping media. These macerators maximise operational reliability, minimise downtime, and reduce operating costs in the wastewater sector and many other branches of industry.
Our Experts
Barr + Wray’s team of engineers and technical specialists bring decades of experience in fluid handling filtration and pump system integration. We understand the challenges of industrial water management and treatment, and work collaboratively with clients to deliver effective, long-term solutions.
Our methodology ensures every project is scoped with clear objectives, measurable outcomes, and ongoing support to maintain performance over time.
Something else
Brewing + Distilling
Whether you're crafting whisky or brewing at scale, Barr + Wray delivers process equipment that handles the full fluid journey, from ingredient water to the final product. With precision pumping, filtration, and disinfection systems that protect quality and flavour.
Food + Beverage
From ingredient handling to final rinse, Barr + Wray provides fluid processing systems - including pumps, filters, and UV, that support hygiene, consistency, and production efficiency.
Oil + Gas
In high-demand environments, our engineered systems handle a wide range of fluids, from process water to chemical streams - with robust pumping, filtration, and disinfection solutions.
Utilities
Barr + Wray supports utility providers with reliable fluid handling systems that manage water, wastewater, and treatment chemicals - ensuring operational continuity and compliance.
Petrochemical
Our process equipment is built to handle aggressive fluids and complex chemistries, helping petrochemical plants optimise flow, filtration, and disinfection across critical systems.
Pharmaceutical + Biotechnology
We deliver precision-engineered systems for processing fluids used in drug formulation and biotech production - ensuring purity, consistency, and compliance with industry standards.
Chemical + Coatings
Our equipment handles everything from raw chemical inputs to final product filtration, helping manufacturers maintain fluid integrity and reduce waste.
General Industrial
Across diverse industrial sectors, Barr + Wray provides tailored fluid processing systems, from pumping and filtration to disinfection - that improve reliability and reduce downtime.
Building Services
From HVAC circuits to greywater reuse, Barr + Wray supplies pumps, filters, and UV systems that keep building services running efficiently and sustainably.
Aquaculture
Barr + Wray supports aquaculture operations with systems that manage both water quality and fluid circulation, from nutrient-rich feed solutions to waste stream control - using pumps, filtration, and UV technologies tailored to aquatic environments.