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By pexpipeman, 04/19/2011

If the hot water recirculation system from home needs to be enhanced with a pump of some sort, then deciding which model is best should be a serious job. Many factors should be taken into consideration, starting with the speed of the water flow, its temperature and pressure variations as well as the materials the pump should be made of.

Unlike the ordinary water pumps, Grundfos UP15-10SU7P is designed to match the Comfort System series, which offers all the options in one unit, is facile to install and has an excellent performance. Because of its incorporated motor protector and built-in timer, this pump never fails to do its job.

It may not be a powerful pump, having a maximum of 25W, but because of its versatility and built-in protection, this circulator pump is more dependable than others. In addition, the Comfort System includes the incorporated times and line cord, as well as the valve verifier.

One of the aspects that need to be taken into consideration when thinking of purchasing Grundfos UP15-10SU7P is that this pump model is made out of stainless steel, which decreases its resistance considerably, compared with an iron or bronze one. Subsequently, the temperature range at which it is advisable to be installed is from 4 to 65 degrees Celsius, and the maximum pressure is of 145psi. the low temperature explains the fact that Grundfos up15-10su7p tlc is usually used for cooling systems and other applications that mainly operate with cold water.

In conclusion, Grundfos UP15-10SU7P pump is probably the best choice one can make to purchase for their plumbing system. Not only is it trustworthy and reliable, but the producers also offer a two year warranty for this model, from the day it has been installed in the piping system.

Grundfos USA – Comfort Series Instant Hot Water System Grundfos up15-10su7p TLC Manual.

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By pexpipeman, 04/05/2011

Grundfos Bronze Pumps

Obtaining circulator pumps which will be ideal for both cold and warm water and that may resist to high pressure has stopped being a controversy. The Grundfos UP26-99BF has been made to please even the most difficult plumbing related system. The truth that it includes a bronze pump not just also increases its resistance, and also tends to make it less susceptible to oxidation and rust.
In the event the will require betterment with an all new pump is a home-based recirculation one, or when it is according to solar heating or maybe water cooling, Grundfos UPS26-99BFC 3-Speed Bronze Circulator Pump could be the exceptional solution. This circulator pump has been built to fit quite a number of applications and to run at its finest performance. This pump must be attached at a voltage of 115V and it has energy of 245.
The heat range at which the water is preferred to traverse the piping system plus the water pump must vary in between 4 and 110 degrees Celsius. This is about one common value for many pumps, but Grundfos UP26-99BF has a perk that not many others possess: it can sustain water with a pressure of maximum 125 psi. That is incredibly important for high-pressure or medium-pressure movement systems, which are usually the major applications this circulator pump came to be for.
Rather like all of those other Grundfos products, the manufacturers supply a two year warranty for their equipment as long as the product or service has technical challenges. As an example, no work effectively as soon as the set up, it truly is noisy or if it is definitely poor in any other approach.
On the whole, Grundfos UP26-99BF is definitely resistant unit which is able to perform in perfect silence since it has been devised for those installs that are sound vulnerable. Also, its bronze body causes it to be more proof against oxidation and corrosion as well as composite impeller furthermore improves its resilience.

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By pexpipeman, 03/24/2011

When choosing a Grundfos UP26-99F pump must be borne in mind that in its data sheet are typical characteristics H = f (Q), N = f (Q) and η = f (Q). They removed the carefully manufactured and prepared for the test pilot of the design. These same characteristics are given in the technical specifications (TU). They must be supported by certification and periodic inspection tests should it occur. Furthermore, according to ASTM 6134-87 all Grundfos 26-99 pumps must be acceptance tests, in which the parameters are checked their work in nominal point.

But, given that the characteristics of the same pumps can have a different slope, as shown in Figure 1, it seems necessary to check the pump also feeds Qmin ext. and Qmax ext .. The test results shall be displayed in the characterization of the passport. It will assess the quality of concrete pump, deviations from standard specifications and proved to determine the economic feasibility of a particular pump in real conditions on the planned discharge regime.

Considering the issues economical operation of Grundfos 26-99 pumps, we must not forget that the generated energy resources can not grow indefinitely. Apparently, in the end, their value will asymptotically approach a certain limit. It is therefore necessary, along with the creation of new generating capacity to create efficient cars and provide energy-saving modes of operation. If we keep in mind that pumps consume about 20% of the total energy output, the objective of improving efficiency in pump engineering and nasosopotreblenii extremely relevant.

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By pexpipeman, 02/10/2011

Grundfos UP15-10FR

Grundfos UP15-10FR 1/25HP Cast Iron Circulator Pump (59896249) features GF 15/26 Rotated flange connections (3/4″, 1″, 1-1/4″, 1-1/2″).

This Grundfos Circulator Pump is for Closed systems with Maximum liquid temperature 230 F.

Grundfos UP15-10FR Features:

• Ceramic shaft and radial bearings;
• Carbon axial bearing;
• Stainless steel rotor can and bearing plate;
• Corrosion-resistant impeller, Composite, PES;
• Cast iron pump housing;
• Rotated flange;

Technical Specifications of Grundfos UP15-10FR:

• Speed Number: 1;
• Max flow: 7.93 US gpm;
• Head max: 5.58 ft;
• Liquid temperature range: 35.6 .. 230 F;
• Maximum operating pressure: 145 psi;
• Approvals on nameplate: UL, CSA;
• Pump housing: Cast iron;
• Pump housing: EN-JL1030;
• Pump housing: ASTM 30 B;

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By pexpipeman, 02/10/2011

Grundfos UP43-44F Circulator Pump, 1/6HP, 115V

Grundfos UPS43-44FC 3-Speed Circulator Pump, w/ IFC, 1/6HP, 115V

Scheme of Dual-Circulating pump

the number of steps (wheels): single-stage (Fig. 1), two-stage, multi-stage (Fig. 2);
the number of flows: single, two-stream (Fig. 3), multi-threaded;
on conditions for supplying fluid to the impeller: a one-sided entry (Fig. 1), bilateral input (Fig. 4);
under the terms of drainage of fluid from the impeller: the spiral tap (Fig. 1), with a circular outlet, with guide vanes, to design the working wheels: with closed impeller, open impeller (Fig. 5);
by way of the drive: a drive through the coupling, with a drive through the gearbox, etc.;
the arrangement of the shaft: horizontal, vertical;
Glandless with dry rotor.
Scheme of the Circulating pump with two-way input