--- title: Valisi Asco | VPH Series | Peristaltic, Volumetric Hose Pumps | description: Perfect for high-pressure, low-volume transfer tasks, including sampling, emptying,food processing, and water treatment application image: https://www.crestpumps.co.uk/hubfs/Website/Product%20Images/Other%20Pumps/VPH.png --- ![Power station-1](https://www.crestpumps.co.uk/hs-fs/hubfs/Power%20station-1.jpg?width=300&name=Power%20station-1.jpg) VPH Series # Peristaltic, Volumetric Hose Pumps - [Products](https://www.crestpumps.co.uk/pumps) - [Other Pumps](https://www.crestpumps.co.uk/pumps/other-pumps) - [peristaltic volumetric hose pumps](https://www.crestpumps.co.uk/pumps/other-pumps/peristaltic-hose-pumps-vph-series) VALISI peristaltic hose pumps are ideal for transfering and dosing a wide range of fluids in different applications. They are sealless, as the hose contains the pumped liquid thus eliminating the possibility of fluid contamination. Max. Discharge Pressure < 15 Bar ![VPH](https://www.crestpumps.co.uk/hs-fs/hubfs/Website/Product%20Images/Other%20Pumps/VPH.png?width=300&name=VPH.png) Achievable Suction < 0.9 Bar CE & ATEX Certified FDA Hoses Available [Download Our Datasheet](https://www.crestpumps.co.uk/hubfs/Website/Product%20Downloads/Asco%20VPH%20Series%20Datasheet.pdf) **Peristaltic Hose Pumps** The VPH peristaltic pump series is perfect for high-pressure, low-volume transfer tasks, including sampling, emptying, food processing, and water treatment applications. This pump features a reversible and seal-less design, ensuring easy operation. It can be equipped with a leak sensor to promptly detect hose failures. An integrated IP66 inverter is available for adjusting flow rates locally or via remote control, with a hydraulic variator offered upon request.  The VPH series is CE and ATEX certified, and FDA-compliant hoses are available if needed. **Corrosion Resistant** The pumps are fully protected against highly corrosive acids and challenging chemicals. The chemical version is well-suited for applications such as dosing and transferring ferric chloride, sodium hypochlorite, hydrochloric acid, and sulphuric acid. Key components, including the pump casing, front cover, rotor, shoes, brackets, frames, and hub, are coated with Halar® or ECTFE for enhanced durability. Connections are available in Polypropylene, PTFE, or Stainless Steel. ![chemical_plant_tint_optimized_950](https://www.crestpumps.co.uk/hs-fs/hubfs/chemical_plant_tint_optimized_950.jpg?width=300&name=chemical_plant_tint_optimized_950.jpg) ## THE CREST PUMPS LIFETIME GUARANTEE **No matter how old your pump becomes, in the unlikely scenario that you have a problem, our engineers will be on hand to diagnose the issue and help you get up and running again. That’s why, with Crest Pumps you’ll never need to worry about unplanned downtime again.   Talk to us now to discuss your chemical pump requirements or book a free site audit to see how much time and money you could save!** [Talk To Us](https://www.crestpumps.co.uk/pumps/other-pumps/peristaltic-hose-pumps-vph-series#talk-to-us) Reliability Redefined ## Built to outlast and outperform Discover the significant savings you can achieve and explore the potential financial benefits that await you. [Cost Calculator](https://www.crestpumps.co.uk/cost-calculator) ![VPH](https://www.crestpumps.co.uk/hs-fs/hubfs/Website/Product%20Images/Other%20Pumps/VPH.png?width=300&name=VPH.png) ## Frequently Asked Questions What is the difference between a diaphragm and centrifugal pump?** A diaphragm pump is a type of positive displacement pump which uses a flexible diaphragm as the only moving part to create pressure and move fluid. It is typically used in applications where a low flow rate, high pressure, or a pulsating flow is required.  A centrifugal pump is a type of rotodynamic pump that uses a rotating impeller to create pressure and move fluid. It is typically used in applications where a high flow rate ir required.  How does an AODD pumps work?** An air operated double diaphragm pump also known as an AODD pump is a type of positive displacement pump which operates using compressed air instead of an electric motor. It consists of two flexible diaphragms connected by a shaft, which move back and forth to create suction and discharge cycles. As compressed air enters one chamber, it pushes the diaphragm outward, forcing fluid out of that side whilst simultaneously drawing fluid into the opposite chamber. A set of check valves ensures that liquid flows in only one direction. The air supply then shifts to the other chamber, repeating the cycle and maintaining a steady flow.   What are the advantages of using an AODD pump?** AODD pumps offer versatility, as they can handle a wide range of fluids, including abrasive, viscous and corrosive liquids. They are self-priming and can run dry without damage, making them ideal for unpredictable flow conditions. Additionally, they feature a simple design with minimal moving parts, leading to low maintenance and easy repair. Can AODD pumps run dry without damage?** Yes, they can run dry without damage, making them ideal for applications with variable flow or intermittent fluid supply. Unlike centrifugal pumps, which can overheat and fail without liquid, AODD pumps use air pressure to move diaphragms, allowing them to operate safely even when dry. However, while they won’t suffer immediate damage, prolonged dry running can increase diaphragm wear, so regular maintenance checks are recommended. ## Trusted By The Best ![Akzonobel2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Akzonobel2.jpg?width=142&name=Akzonobel2.jpg) ![Ballard1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Ballard1.jpg?width=142&name=Ballard1.jpg) ![biffa2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/biffa2.jpg?width=142&name=biffa2.jpg) ![Champion X1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Champion%20X1.jpg?width=142&name=Champion%20X1.jpg) ![kemira2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/kemira2.jpg?width=142&name=kemira2.jpg) ![Vynova1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Vynova1.jpg?width=142&name=Vynova1.jpg) ![Akzonobel2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Akzonobel2.jpg?width=142&name=Akzonobel2.jpg) ![Ballard1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Ballard1.jpg?width=142&name=Ballard1.jpg) ![biffa2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/biffa2.jpg?width=142&name=biffa2.jpg) ![Champion X1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Champion%20X1.jpg?width=142&name=Champion%20X1.jpg) ![kemira2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/kemira2.jpg?width=142&name=kemira2.jpg) ![Vynova1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Vynova1.jpg?width=142&name=Vynova1.jpg) ![Akzonobel2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Akzonobel2.jpg?width=142&name=Akzonobel2.jpg) ![Ballard1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Ballard1.jpg?width=142&name=Ballard1.jpg) ![biffa2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/biffa2.jpg?width=142&name=biffa2.jpg) ![Champion X1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Champion%20X1.jpg?width=142&name=Champion%20X1.jpg) ![kemira2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/kemira2.jpg?width=142&name=kemira2.jpg) ![Vynova1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Vynova1.jpg?width=142&name=Vynova1.jpg) ![Akzonobel2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Akzonobel2.jpg?width=142&name=Akzonobel2.jpg) ![Ballard1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Ballard1.jpg?width=142&name=Ballard1.jpg) ![biffa2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/biffa2.jpg?width=142&name=biffa2.jpg) ![Champion X1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Champion%20X1.jpg?width=142&name=Champion%20X1.jpg) ![kemira2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/kemira2.jpg?width=142&name=kemira2.jpg) ![Vynova1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Vynova1.jpg?width=142&name=Vynova1.jpg) ![Akzonobel2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Akzonobel2.jpg?width=142&name=Akzonobel2.jpg) ![Ballard1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Ballard1.jpg?width=142&name=Ballard1.jpg) ![biffa2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/biffa2.jpg?width=142&name=biffa2.jpg) ![Champion X1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Champion%20X1.jpg?width=142&name=Champion%20X1.jpg) ![kemira2](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/kemira2.jpg?width=142&name=kemira2.jpg) ![Vynova1](https://144022160.fs1.hubspotusercontent-eu1.net/hub/144022160/hubfs/Logos/Vynova1.jpg?width=142&name=Vynova1.jpg) ![mining-1](https://www.crestpumps.co.uk/hs-fs/hubfs/mining-1.jpg?width=300&name=mining-1.jpg) ## DON’T JUST TAKE OUR WORD FOR IT *Crest are very helpful and knowledgeable on different applications; I would recommend Crest Pumps to anyone.* ANDY BRUCEMacduff Shellfish ## Talk to us Contact us today for your chemical pump solutions that will minimise downtime and maximise energy efficiency. ```json { "@context" : "https://schema.org", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "United Kingdom", "addressLocality" : "New Milton", "addressRegion" : "Hampshire", "postalCode" : "BH25 5NN", "streetAddress" : "7 Queensway" }, "knowsLanguage" : "en_GB", "logo" : { "@type" : "ImageObject", "url" : "https://144022160.fs1.hubspotusercontent-eu1.net/hubfs/144022160/Branding/Crest-Pumps-Logo-Small-2025.png" }, "name" : "Crest Pumps Ltd", "url" : "https://www.crestpumps.co.uk/pumps/other-pumps/peristaltic-hose-pumps-vph-series" } ```