News Prom-nasos

For high-temperature working conditions, the existing RMG12 will be replaced by the new eRMG12 with the introduction of eSic-Q7 instead of U3 tungsten carbide. In this case, the mechanical seals will also be 100% interchangeable, and the pump description will change to indicate the new material. This applies only to diameters 22, 28 and 38, while for 48 and 70 a balanced mechanical seal is the preferred solution. The description and article numbers do not change, except for the high-temperature version using the eRMG12 mechanical seal.
The articles and description do not change, except for the high-temperature version with an eRMG12 mechanical seal.
Seal face: carbon graphite antimony impregnated (A), carbon graphite resin (B), silicon carbide (Q1, eSiC-Q7)
Seat: Silicon carbide (Q1, eSic-Q7), Tungsten carbide (U3)
Elastomer: NBR( P), EPDM (E), FKM (V),HNBR (X4)
Metal parts: CrNiMo steel (G), called Hastelloy® (m)

The Lowara 15SV15F150T/D (serie e-SV 1-22) - is a vertical multi-stage pump with a two-pole motor. This series of pumps is widely used for pressure boosting in a number of industrial applications.
Lowara 15SV15F150T/D Pump Mechanical Seal - Roten UNE5-16-X . Depending on the application conditions, different materials are available
KL01AD7 DICHTSET D16 BIL Q1BEGG+OR SV (Mechanical seal UNE5K-16-Q1BEGG-WRAS)
KL01AD2 DICHTSET D16 BIL Q1BVGG+OR SV (Mechanical seal UNE5K-16-Q1BVGG)
KL01AD9 KIT TEN D16 BIL Q1CTGG+OR SV # (Mechanical seal UNE5KCA-16-TRCL-Q1CTGG)
KL01AD3 KIT TEN D16 BIL Q1Q1EGG+OR SV# (Mechanical seal UNE5K-16-Q1Q1EGG )
KL01AEA KIT TEN D16 BIL Q1Q1TGG+OR SV# (Mechanical seal UNE5KCA-16-TRCL Q1Q1TGG)
KL01AD4 DICHTSET D16 BIL Q1Q1VGG+OR SV (Mechanical seal UNE5K-16-Q1Q1VGG)
Transcript of materials :
Q1: Silicon Carbide
B : Coal impregnated with resin
C : Coal impregnated with special resin
E : Ethylene-propylene rubber
V : Fluoroprene
T : Polytetrafluoroethylene
G : AISI 316 steel
May 28, 2021
Repair of mechanical seals
May 25, 2021
ALLWEILER NTT 32-160 U5 AW4 Pump Repair

ALLWEILER pumps are above all reliability and quality!
But no matter how correct the mechanism is, there are parts that need to be replaced or restored over time. Usually, rolling bearings, cuffs, and mechanical seals are replaced. Replacement of bearings is mandatory when a certain service life of the watch is running, regardless of their condition. The manufacturer describes the routine maintenance for service and warranty service. If the pumps operate in high temperature conditions, like hot oil pumps and with increased loads, then the service life of the bearings is reduced, so as not to cause their mechanical seal failure and workings on the pump shaft and housing.

EBARA mechanical seal for pumps - type of seal and pump brand.
Wear and tear of friction pairs if EBARA pumps are not protected against dry running
What if you proceed with a leaking pump mechanical seal:
product loss
liquid penetration into the electric motor
bearing failure
What to check when replacing the EBARA pump seal - the bearings.
Runout of the pump-motor shaft will damage the seal.
An example of the use of mechanical seals of the mixer shaft, agitator when mixing and preparing milk in the production of cheese. What cheeses are produced: Altai, mountain, Carpathian, Kuban, Soviet, Swiss, Biysk cheeses. It is known that in the production of most of these types of cheese, the temperature of the second heating and mixing with a mixer or agitator , is used , which is in the range from +47°C to +58 °C.
The process of mixing the product with the whey at different stages of maturation is very important for obtaining cheese, milk, whey as a product of high quality and sterility of the process. The process can be carried out both under heating and under vacuum or overpressure.
The main reason for the failure of the mechanical seal is the wear of the friction pairs or the destruction of the friction surfaces of the seal due to the runout of the shaft or working in "dry" conditions.
Replacement of the mechanical seal for the agitator-selection and consultation of the manager
April 29, 2021
Chemical plastic pumps and abrasive-containing liquids
Manufacturers of pumping equipment for the chemical industry are increasingly giving preference to polymers when choosing materials for their products. This is due to their extreme resistance to aggressive chemicals and adaptability, and sometimes their relative cheapness relative to metals. Plastic pumps are much lighter than metal samples. At the same time, they have sufficient strength to work with engines up to 3000 rpm and significant performance.
Currently, the main types of chemical pumps are centrifugal and diaphragm pumps.
Modern centrifugal pumps are mainly pumps with a special mechanical seal and pumps with a magnetic coupling.
Horizontal polymer chemical centrifugal pumps have high performance, are powered by a direct drive motor (Max. 3000 rpm), and are designed for fast pumping and/or pumping of aggressive liquids at a flow rate of 9 to 40 m3/h.
If the impeller is open, the pump can pump even very polluted liquids containing small suspended dense particles in a continuous flow.
Special chemically resistant mechanical seals make it possible to prevent the leakage of aggressive solutions of chemicals from the pump part and damage to the engine. They are made of polymers for use in standard conditions. For heavy – duty applications and heavily soiled liquids, use Teflon and friction pairs made of ceramic or silicon carbide.
The Relative Strength of polymer materials made it possible to produce new types of pumps – plastic pumps with a magnetic coupling.
Magnetic coupling centrifugal pumps are used in processes where aggressive reagents and solutions require circulation or pumping.
The magnet on the motor shaft rotates the magnet integrated into the pump impeller with its magnetic field. Therefore, there is no need for shaft seals, since aggressive liquid does not come into contact with it. There is no need for expensive shaft material made of special resistant alloys. This significantly reduces operating costs
Magnetic coupling pumps are designed for fast pumping and/or pumping of aggressive liquids at Flow rates from 15 to 1230 l/min (0.9 - 73.8 m3/h). Magnetic coupling pumps are used for pumping clean liquids with a viscosity of up to 200 cPs (at 20 °C).
In general, plastics are not sufficiently resistant to liquids containing abrasive particles. Only a few of them are as abrasive-resistant as stainless and carbon steel.
Relative bulk abrasive abrasion of various materials (PE-1000 - 100 abrasion) according to the abrasive wear test method in the abrasive mixture (ISO 15527).
Therefore, only PVDF (polyvinyldene fluoride) and PE-100, PE-HD (polyethylene) can compete with metals in terms of abrasive resistance.
A large amount of abrasives and solid particles in the liquid lead to rapid failure of plastic pumps with a magnetic coupling.
Special pre-filters should be used to filter coarse particles.
The coarse pre-filter is designed to install pneumatic or centrifugal pumps to protect them from suspended solids and foreign objects, without causing excessive loss of productivity.
The basket filter is an important device for protecting the pump. Thanks to its use, suspended particles, filaments contained in the liquid are filtered. These elements are particularly harmful to pumps. The kit does not contain metal parts and is therefore ideal for highly aggressive substances such as acids and alkalis used in the chemical industry. The filter structure makes it easy to clean and inspect.
Plastic diaphragm pumps are also suitable for abrasive-containing viscous liquids and liquids with dense particles.
Special slurry (mud) pumps are better able to cope with these tasks.
The flow part of the slurry pump is made of a high-chromium alloy or coated with wear-resistant rubber, which makes them suitable for liquids containing solid particles, as well as acids or alkalis, which makes it possible to use these pumps for a wide range of liquids.
Centrifugal slurry pumps are used for pumping abrasive liquids with a high concentration of suspended particles. Pumps have different types of construction: horizontal self-priming, semi-submersible, submerged.
In difficult operating conditions special rubber lined chemical pumps are used, as well as pumps with a working part made of thick-walled cast acid-resistant stainless steel AISI 316L .
German manufacturer of pumps for swimming pools and circulation with filters SPECK specializes in the assembly of pumps for circulation and pre-filtration in swimming pools.
Select the SPECK mechanical seal for the pump by yourself or order a consultation and selection from the manager.
April 27, 2021
KSB 016442623 article mechanical seal KSB KU043M1-5A material 0101VGG replacement of the mechanical seal
Each pump manufacturer "encrypts" the mechanical seal, which is standard under its article or product code .When replacing the mechanical seal, we identified the following end models, similar to KSB KU043M1-5A material 0101VGG, these are BURGMAN M7N and R-H12N 43, CAR/SIC, EPDM, 304, G9 according to the BTS Engineering item number: R-M7N 43, SIC/SIC, VITON, 316, G9
April 18, 2021
Replacing the mechanical seal for the Grundfos pump
R-CR cartridge seals for pumps Grundfos CR, CRE, CRI, CRIE, CRN, CRNE, CRT, CRTE
Material execution:
HQQE, HQQV, HQQK , HQQF , HQBE , HQBV , HQBK , HUBE , HUBV, HUBK, HUBF, HUUE, HUUV , HUUV* , HUUK, HUUF
Mechanical seal part number:
96455086, 96455087, 96533326, 96533327, 96455088 , 96455089 , 96491375 , 96455082 , 96455083 , 96533322 , 96533323 , 96455084 , 96455085 , 91043611 , 96533324 , 96533325
96511844 ,96511845, 96511846, 96511847 , 96511848 , 96511849 , 96511836 , 96511837 , 96511838 , 96511839 , 96511840 , 96511841 , 96511842 , 96511843
96525458, 96525490, 96533369, 96533412 , 96525457 , 96525459 , 96533365 , 96533366 , 96436727 , 96436728 , 96533367 , 96533368
Always in stock cartridge seals for Grundfos CR pumps:
12 mm for CR, CRN 1,3,5
16 mm for CR, CRN 10,15,20
22 mm for CR, CRN 32,45,90,120,150