Introducing the Remote Pump Head

Occasionally we have to pump some liquids with extreme temperatures that are either too hot or too cold. In either case, these temperatures could potentially cause long term wear and possible damage to the internals of the gear housing and the hydraulic oil it contains. AquFlow’s Remote Pump Head is designed to keep that temperature related effect away from the rest of the pump components by separating the liquid pump chamber away. We use the appropriate intermediate oil to better handle the temperatures and help dissipate the temperature difference.

Essentially the working principle of this pump is similar to any other AquFlow hydraulic diaphragm metering pump. The only difference is that there is an intermediate hydraulic oil that transfers the pressure to a pump head that is some distance away from the rest of the pump. These pumps are highly engineered pumps and they need to be customized to each application specifically. Hence we would need to know all details of the application such as exact process liquid, temperature of the liquid, viscosity and specific gravity of the liquid, ambient temperature, duty cycle (how much time the pump is running before it is off), suction and discharge conditions etc. before we can determine the exact configuration most suited to the application.

For full features and specifications, download the brochure HERE.

By |February 24th, 2015|News, Products|0 Comments

AquFlow Launches IVAX – Intelligent Verification and Control System

AquFlow has always taken pride in being an innovative company. Many of our customers had asked us to build a system that not only controls the flow of the pump automatically, but also verifies the flow of the chemical.

Metering pumps by nature are very accurate pumps and they are used for applications where the chemical need to be added in a very precise quantity. Many metering pumps are calibrated to deliver set flow rates. After the pump has been set there are several scenarios where the chemical flow could be disrupted. For example, when the reservoir has run out of chemical or when there is an air gap due to degassing or a blockage in the suction line, the pump is turning but the chemical is either not flowing at all or it is flowing at a lower flow rate.

AquFlow’s IVAX not only controls the flow rate of the pump, but it also verifies that the exact amount of chemical is flowing at any given time. It even has the capability to log the flow over a period of time. So when a water treatment facility needs verification that the correct ratio of Chlorine was added, they can easily refer to the log. Or when a process engineer needs dynamic flow control, he can get that along with a record that verifies it.

The IVAX controls the speed and / or stroke length of the pump based on the readings of the flow measurement device. Hence there is no possibility of false reading or assumptions. Everything is positively verified and controlled. The IVAXcan be customized to any given application or it can be bought in a modular configuration to suit most unique applications.

This system can be […]

By |November 17th, 2014|Products, Uncategorized|0 Comments

AquFlow Pumps in the growing Global Metering Pump market

The Global Metering Pump market is poised to grow at a CAGR of 4.04% between now and 2018 according to Research And Markets report that came out last week. This growth is driven primarily by the increase in demand for safe drinking water worldwide. According to the same report the main trend in the industry is the popularity of digital solutions for measurement and control of these metering pumps. In addition this digital technology is capable of detecting flaws in the pumping system such as cavitation to further improve the efficiency.

AquFlow is uniquely positioned to take advantage of this growth as a vast majority of our pumps are sold in Water Treatment industry to municipalities around the world. What make AquFlow the preferred pump in these applications is the accuracy and durability of the pumps to operate without any maintenance for several years. This reliability of AquFlow pumps is the result of continuous product development for the last four decades.

AquFlow has also taken the lead in adapting digital technology to our pumping solutions. We have been offering automatic stroke controller ECCA and VFD that are both capable of taking 4-20 mA input from any wired or wireless system such as SCADA. AquFlow also offers different types of leak detection systems to make sure the chemical delivery is consistent and accurate all the time.

By |June 19th, 2014|News, Products|0 Comments

Pumping Viscous Liquids with AquFlow Pumps

Not all liquid chemicals are the same. Liquid chemicals come in various shapes, consistencies, viscosities and solid content. In this article we are going to explore the most suitable options for pumping high viscosity liquids.

Viscosity is by itself a complex subject which requires a very detailed explanations to various kinds and measures of viscosity. For our purposes we will keep the discussion relatively simple. Viscosity of a liquid is the resistance it generates to flow. When a liquid flows it has various frictional resistances that act on it and within itself. Two major types of viscosities are the dynamic (shear) viscosity AKA absolute defined as the friction between adjacent layers of the liquid as it flows and the second one being the kinematic viscosity which is measured as the ratio of absolute viscosity to its density.

Hence the higher the viscosity is of a liquid the slower it flows or pours out of a container. If we were to take two jars of exactly the same size and shape and fill one with water and the other with honey. Then we try to pour the contents out by turning it at a 45 degree gradient downwards, we will notice that the water jar empties out in a fraction of the tie it takes for the honey to empty if it ever empties completely. This is an illustration of what viscosity does to the movement of a liquid which is the rate of flow. So now we have established that the higher viscosity liquids flow slowly.

AquFlow makes several modifications to its pumps depending upon the liquid and the application to make it ideal for these high viscosity liquids. Some of these are as follows,

We reduce the speed […]

By |June 11th, 2014|Metering Pumps Tips, Products|0 Comments

How Does a Teal Pump Change to Yellow?

Many of you may already know this, but we started our life as Hydroflo in 1972.


Hydroflo pumps were revolutionary in design and quickly built their reputation as one of the most durable pumps. Soon the teal colored pumps were all over known for their quality and reliability. Then after the original founder Mr. John Klembeth retired in 1996, the company changed hands a couple of times under two different managements. That is where the names Penn Process Technologies and Nikkiso come in.

In 2007, AquFlow re-launched the pump line with a new name and a fresh new look with Golden Yellow color. So whether you have a teal green pump, a yellow pump, a Hydroflo pump, a Penn Process pump, or a Nikkiso pump, you need to contact AquFlow for all the spares, accessories and replacement pumps.

By |June 3rd, 2014|Metering Pumps Tips, Products, Pump Accessories|0 Comments

Why Matching Accessories is All The Rage in the Pump World

You seldom use a metering pump by itself. You need many if not all of these accessories based upon your application:

Back Pressure Valve
Safety Relief Valve
Calibration Column 
Inlet Strainer
Pressure Gauge 
Pulsation Dampeners 
Injection Quills, etc.

Shopping around for these accessories could be time consuming and complex when you are trying to match the material of the wetted parts, connection sizes and pressure capabilities. Then when you finally have it all put together and something is not working as expected, the blame game begins. It’s the pump’s fault, no it is the valves’ fault, or may be the pressure gauge or calibration column is not accurate. Call all these vendors who conveniently blame every other component except theirs.

To solve this common problem AquFlow provides a complete set of matching accessories. Just ask for these accessories when you order the pump. So it all comes together and ready to use. In the unlikely event something does not work, you only need to call one company – AquFlow. Please call us and ask us to email you the brochure for these accessories.

By |May 27th, 2014|Metering Pumps Tips, Products, Pump Accessories|0 Comments

Too Many Choices – Which Pump is the One for Me?

Often times we are bombarded with choices in the market place which could get confusing. In metering pump world one faces a similar situation. You can get a metering pump for the same specifications in a wide range of prices. We did a recent study to find the range of prices could be mind boggling from USD 250 to USD 1,500. Which pump would be best suited for your application? How do you make the choice. Well we thought a simple comparison table below will help you navigate through the choices and arrive at the most suitable pump for your needs.

By |May 20th, 2014|Metering Pumps Tips, Products|0 Comments

5 Things That Will Improve The Accuracy of a Metering Pump

Use a Back Pressure Valve to apply consistent pressure on the check valve balls so they close promptly and firmly.

Ensure there are no air bubbles trapped inside the pump chamber or anywhere else in the discharge line. The air bubble will compress and expand without pushing the liquid through. Remember gas / air is compressible while liquids are not compressible.

Use a degassing valve installed on the pump head when pumping a chemical such as sodium hypochlorite that can off-gas, in low flow rates. This is similar to introducing air bubbles in the line.

Ensure the suction line is clean and there is adequate NPSH. This is to prevent cavitations and consequent diaphragm failure.

Always use hydraulically balanced diaphragm metering pump. This is the only design which takes away the diaphragm stretching out of the equation as it balanced the process side pressure with the hydraulic pressure on the other side. It also ensures that the diaphragm lasts a very long time.

By |May 6th, 2014|Metering Pumps Tips, Products|0 Comments

AquFlow Expands PVC and PVDF Liquid End Options for its Small Volume Series 1000 and Series 900 Pumps

AquFlow continues to expand its product line in response to the customer requirements. Due to the popularity and specific customer demand we have developed plastic liquid ends for low flow Series 1000 pumps and the entire Series 900 pumps. Not only does that fill a gap in our range of corrosion resistant materials but it also adds a lower cost alternative to the more expensive metals required for the applications. These liquid ends are now available for 3/8″, 9/16″ and 3/4″ plunger sizes in Series 1000 as well as the entire range of 3/16″, 1/4″ and 3/8″ plunger sizes in Series 900 pumps.

These liquid end options are available in a variety of plastics including PVC and PVDF. In addition to the diaphragm head and the check valves made from these corrosion resistant materials our pump liquid end also includes PTFE diaphragm and contour plate in a similar corrosion resistant plastic. The diaphragm heads up to the 3/8″ plunger size includes a contour plate that is built in to reduce the number of parts and increase the ease of service and repair. While PVC is a popular option for use with Sodium Hypochorite, Ferric Chloride etc., PVDF is solid against any corrosion from most harsh chemicals such as acids etc.

By |April 29th, 2014|Products|0 Comments