Duro Piston Pump Manuall [EXCLUSIVE]

A piston pump is a type of positive displacement pump where the high-pressure seal reciprocates with the piston.[1] Piston pumps can be used to move liquids or compress gases. They can operate over a wide range of pressures. High pressure operation can be achieved without adversely affecting flow rate. Piston pumps can also deal with viscous media and media containing solid particles.[2] This pump type functions through a piston cup, oscillation mechanism where down-strokes cause pressure differentials, filling of pump chambers, where up-stroke forces the pump fluid out for use. Piston pumps are often used in scenarios requiring high, consistent pressure and in water irrigation or delivery systems.[3]

In a lift pump, the upstroke of the piston draws water, through a valve, into the lower part of the cylinder. On the downstroke, water passes through valves set in the piston into the upper part of the cylinder. On the next upstroke, water is discharged from the upper part of the cylinder via a spout. This type of pump is limited by the height of water that can be supported by air pressure against a vacuum.

We manufacture crosshead extension rods, quick connect rods, self-aligning rod assemblies, and piston rods for all types of mud pump manufacturers. All MISSION rods are manufactured from high-quality materials and machined to exact tolerances to provide long life and superior service.

Robust, durable, and reliable, Solar Force pumps use less energy per gallon of water delivered than any other pump that we sell. The pump head is cast iron with a brass cylinder. These pumps have a proven design with a 20-year life, and are simple to maintain with common hand tools. Leather piston seals are easy to replace (5 to 10-year maintenance interval). The well illustrated installation and repair manuals make it easy to install and service.

The piston pumps are very simple to rebuild and to put back into service, except for the parts that are getting impossible to find. If you can find the parts that they need, then rebuild them and use them. Otherwise, go down to Sears and buy new pumps to replace them. The new jet pumps don't have near the parts to give you problems as do the old piston pumps.

permaculture.dave wrote: We've also noticed that parts are getting hard to come by. We've considered getting some new piston pumps, but the only company we found that made one that looked good was Dankoff. We're looking into getting a new one this year, but we still like the old ones a lot.

Ed Cooley wrote:I am going through a Deming piston pump that hasn't been used for about 50 years. I've owned it all that time and never had a use for it. Now I have an unused Dankoff DC motor and PV to run it and want to try to get it pumping. I have found the leather cups at an Amish on-line store called Lehman's. The last thing I am concerned about is the packing nut side of the pump that is gasketed. I can't figure out how it is held together. It seems like when you remove the pump from the frame that piece should come loose, but after tapping it, it doesn't come apart. Either it's really stuck, or there is something I don't see holding it together. I can feel that there is a thick gasket (it might be leather too) in there behind the packing nut housing. My plan now is to put it together and see if it leaks.

The fluid inlet of the piston pump is often immersed directly into fluid, which is then drawn into the pump via negative pressure as the plunger reciprocates. The combination of check valve timing and plunger motion allows fluid to be dispensed on both the up and down stroke, delivering output pressures up to 15,000 per square inch (psi) and flow rates up to 60 gallons per minute (gpm).

As fluid viscosity increases and it becomes more difficult to draw fluid into the pump, a follower plate can be attached as part of a piston pump package and is either powered pneumatically or by gravity that forces fluid into the pump, as seen in Image 2.

Hydraulically powered pumps offer even better power density than pneumatics as well as quieter operation. Hydraulic piston pumps tend to be the preference for mobile applications where the power take-off (PTO) of a vehicle can be used, or when working in cold conditions where motor icing could cause challenges. Piston pumps powered by an electric motor are energy efficient, but because of low power density, an electric pump cannot deliver the pressures that many industrial applications demand, limiting use to lower viscosity fluids and applications mostly involving transferring or spraying.

Multiple pump ends are available for piston pumps to successfully handle a range of fluid properties. These are called lower-ends and they are available in two-ball, four-ball and chop-check types. Two-ball and four-ball style piston pumps are designed for low- to medium- viscosity fluids typically found in transferring, washing and coating applications. For extrusion applications involving high-viscosity materials up to and beyond 1 million centipoises (CPS), both heavy-duty chop-check and two-ball pump packages can be used.

Although there is a measure of capability crossover, each piston pump type has limits. It is advisable to consult the manufacturer or dealer when sizing or selecting a pump for a specific application.

When using a piston pump to transfer challenging media such as shear sensitive ultraviolet (UV) inks or adhesives with suspended solids, special tubes and plunger coatings and packing seal materials are used. These minimize shear and thermal energy, as well as provide resistance to any abrasion that can occur. A stainless steel pump combined with ceramic-coated cylinders and piston rods offer waterborne benefits and abrasion resistance for more endurance and reduced wear when working with harsh materials. All of these features combined help prevent premature pump failure.

With so many variables at play, application packages preconfigured with the right motor, piston pump, mount, controls and accessories offer operators the greatest flexibility. For end users, pre-assembled and validated application packages eliminate much of the guesswork that comes with choosing the right pump for the job.

With a simple motor design, universal valve blocks and pump connections, piston pump operators can easily move between motor sizes, create new pump ratios and even upgrade their system without buying a new pump. Other features include:

Because it has only a few moving parts, maintaining a piston pump is relatively simple. When cleanliness, cycle rate and other wear factors are monitored and controlled, a piston pump can last for many months or even years between maintenance cycles. For maximum pump and system component life, piston pumps must be protected from contamination.

Jim Artmann is the global product leader for piston pumps at ARO, a worldwide manufacturer of fluid management products that are expertly engineered to deliver performance and serviceability. For more information, visit arozone.com.

With their flexibility to work across a variety of materials in a number of industrial applications, piston pumps continue to demonstrate their importance as a key component in an effective fluid handling system.

FET manufactures high-quality pistons for regular and high-temperature applications as part of our full line of Osprey mud pump system solutions. We offer a full range of pistons from standard rubber to specially engineered urethane that can be used in various drilling fluids to meet your specific drilling requirements. FET offers additional fluid end pump parts, including drilling valves, seats, liners, and gaskets. Contact your FET representative to learn more. 1e1e36bf2d