vertical pump mechanical seal factory

This cartridge grundfos mechanical seal is a smart design pump seal for grundfos vertical pump, this seal suit for grundfos CR CRI and CRN series vertical water pumps. As a special cartridge mechanical seal, we follow the original grundfos design 100% for this seal, this help to avoid any installation mistake when you install the seal for the grundfos pump, and make installation easy. Our grundfos mechanical seal frame and spring are made by strong quality stainless steel SS304( SS316 available too) material, help to against rusty problem. We use SSIC (Pressureless Sintered Silicon Carbide) as stationary and rotary seal face, it is much better than normal material RSIC(Reaction sintered Silicon Carbide), offer more wear resistance for the grundfos mechanical seal. For Rubber part, normally people choose EPDM or VITON for secondary seal. Our grunfos mechanical seal will make your pump as good as new and reduce downtime, and last longer time when pump running.

Guangzhou Lepu machinery CO., LTD becomes one of the leading mechanical seal supplier in south of china, we focus in designing and manufacturing mechanical seal for many kinds of famous brand pumps, our mechanical seal cover many kinds of industry like food, petrol chemical, paper making, sea ship, and so on.

Trisun"s cartridge seals for Grundfos pumps, Pentair pumps, Stairs Pumps etc. brands have three structures: cartridge seals with Hexagon retainer, big round retainer and three-hole retainer.

We are a manufacturer. All seals have bulk inventory and can be shipped to you quickly. We promise to ship you in small quantities within 3 days.Advanced technology, excellence, replace original

1. Different models of mechanicals seals for a wide variety of Grundfos® pumps, among them: CR(N), NB, NK, CLM, LP, TP, etc. Available in diverse combinations of materials and different diameters: 12, 16, 22, 28, 33, etc. Also mechanical seals for Sarlin®. Division of waster pumps. Available in various materials: silicon-graphite carbide, silicon carbide-silicon carbide; combined with EPDM and FKM elastomers.

2. Mechanical seals are available for different references Gorman-Rupp® pumps. Special models for the transfer of clean water, sewage, oil industry, agriculture and others.

3. Mechanical seals for Fristam® pumps. Wide range of models and materials in the most standard diameters: 22,30 and 35 mm. Different assembly possibilities for the most well-known pump models: FP, FL and FT.

4. Broad range of mechanical seals compatible with Flygt® and Grindex® waste water pumps. These mechanical seals are characterized by their easy and fast installation, without having to make any modification to the pump. Manufactured in stainless steel and in solid tungsten carbide. Special tools are not necessary for their installation.

6. Different designs of mechanical seals for Ebara® pumps, single and double seals in combinations carbide-silicon carbide and graphite-aluminium oxide.

7. Mechanical seals for all types of Calpeda® pumps: centrifugal pumps, multistage, submersible. Different models of mechanical seals in a wide range of materials.

8. Mechanical seals compatible for APV® pumps, among them: Puma, ZMA, ZMB, ZMD, ZMS, ZMH, ZMK. Rosista® and Pasilac®, W and W+. Some designs with wave spring like the special seals for APV Howard® pumps and Crepaco Clean Line®. All of them have been manufactured in materials suitable for working with fluids such as juices, milk and drinks in general.

10. Different models of mechanical seals compatible for Alfa-Laval® pumps series CM, FM, MR, LKH,GM and ALC. Also the models for the range of lobular SSP and SR pumps. Mechanical seals in different combination of materials tungsten carbide, silicon carbide, graphite; combined with different types of elastomers: NBR, EPDM and FKM.

11. Mechanical seals for ABS® submergible pumps specific wastewater treatment. Different models of mechanical seal available: oil chamber mechanical seal and water mechanical seal.

2. The radial acting deviation for the shaft(shaft sleeve) of the installed mechanical seal shall be 0.04mm by maximum while the axial movement value of the rotor shall be no more than 0.1mm.

3. The seal cover (or shaft cover) of the stationary ring of the installed mechanical seals,the vertical degree of the seal face should be 0.04mm by maximum.

4. When installing the mechanical seals,the shaft(shaft sleeve),seal chamber,seal face as well as the mechanical seal must be cleaned in order to keep from any medium to sealing part.

5. When conveying medium of over high or low temperature,with medium which are easy catch fire,easy for explosion. Related mechanical seal standards must be referred to take appropriate measures such as quench,rinsing,coolong and filtrating.

6. Appropricate lubrication must be choosen when mechanical seal is installed.The installment size of the mechanical seal must be guaranteed to the installment instruction.

We are a manufacturer. All seals have bulk inventory and can be shipped to you quickly. We promise to ship you in small quantities within 3 days.Advanced technology, excellence, replace original

1. Different models of mechanicals seals for a wide variety of Grundfos® pumps, among them: CR(N), NB, NK, CLM, LP, TP, etc. Available in diverse combinations of materials and different diameters: 12, 16, 22, 28, 33, etc. Also mechanical seals for Sarlin®. Division of waster pumps. Available in various materials: silicon-graphite carbide, silicon carbide-silicon carbide; combined with EPDM and FKM elastomers.

2. Mechanical seals are available for different references Gorman-Rupp® pumps. Special models for the transfer of clean water, sewage, oil industry, agriculture and others.

3. Mechanical seals for Fristam® pumps. Wide range of models and materials in the most standard diameters: 22,30 and 35 mm. Different assembly possibilities for the most well-known pump models: FP, FL and FT.

4. Broad range of mechanical seals compatible with Flygt® and Grindex® waste water pumps. These mechanical seals are characterized by their easy and fast installation, without having to make any modification to the pump. Manufactured in stainless steel and in solid tungsten carbide. Special tools are not necessary for their installation.

6. Different designs of mechanical seals for Ebara® pumps, single and double seals in combinations carbide-silicon carbide and graphite-aluminium oxide.

7. Mechanical seals compatible for APV®pumps, among them: Puma, ZMA, ZMB, ZMD, ZMS, ZMH, ZMK. Rosista®and Pasilac®, W and W+. Some designs with wave spring like the special seals for APV Howard® pumps and Crepaco Clean Line®. All of them have been manufactured in materials suitable for working with fluids such as juices, milk and drinks in general.

8. Different models of mechanical seals compatible for Alfa-Laval® pumps series CM, FM, MR, LKH,GM and ALC. Also the models for the range of lobular SSP and SR pumps. Mechanical seals in different combination of materials tungsten carbide, silicon carbide, graphite; combined with different types of elastomers: NBR, EPDM and FKM.

9. Mechanical seals for ABS® submergible pumps specific wastewater treatment. Different models of mechanical seal available: oil chamber mechanical seal and water mechanical seal.

Mechanical seals operating under the correct conditions can provide years of trouble-free service. Most mechanical seals are designed to be surrounded by liquid to provide cooling and to avoid running dry. In pumps used for liquids, it is a common requirement that they must not run dry.

It is often assumed that if the pump is pumping liquid, then the seal must be surrounded by liquid. In a horizontal pump, this is almost always the case. In a vertical shaft pump, it should not be taken for granted. A simple way to illustrate this is to push an empty cup with the open end down into a container filled with water. Air is trapped in the cup because it has nowhere to go, and if a sealed shaft passed through the cup the air would remain trapped.

If we turn the cup horizontally, the air escapes from the cup’s open end like it would in a horizontal pump. In a vertical pump with a mechanical seal, this principle must be considered: If air is trapped in the seal chamber, the seal is running dry.

A wastewater plant in Amherst, New York, uses several vertical shaft end suction pumps to return activated sludge and raw sewage. These pumps were originally braided packing sealed pumps. They had a history of requiring frequent gland adjustments and shaft sleeve wear that required rebuilding the pumps.

The plant decided that the energy savings and reduced downtime of split mechanical seals were worth the investment. The seals were installed with a restrictor bushing in the stuffing box to reduce flush water usage and limit solids entering the seal. The seals were flushed with process water and vented at startup. Pressure in the seal housing is maintained as recommended by manufacturers and industrial practice. The seals were vented by releasing the air through a vent before startup.

One day a plant manager noticed the air release valves on the plant’s hot water heating system were called “high vents”—they release air from the heating lines, and they are located at the high points in the system. Even though the seals were vented before starting the pump, the flush water carries entrained air that is probably collecting in the seals. Because the seal is the highest point and is working properly, over time enough air collects to create a dry pocket around the seal faces. The flush water is going through the air pocket but not displacing it. (The faces were getting splashed but not surrounded with water.)

In order for this valve to work, the seal chamber or housing pressure must be high enough to push water up into the valve. The manager looked into the specifications of the air release valve used on the heating system, a float and needle valve type similar to a carburetor float—only air passes through the needle valve, so it is unlikely to clog.

Plant personnel attached the valve to the pump frame above the seal and placed a shutoff valve below it so it could be closed in the event the valve requires repair. Plastic tubing connected it to the vent port on the seal housing (opposite the flush port). The seal is now constantly vented, and the seals operate as they should. The plant modified all similar pumps.

In a pump with double mechanical seals (horizontal or vertical), the flush water is deadheaded between the seals. Venting at start-up should be adequate. In any case the vent should be the higher port and the flush the lower; this removes the most air possible from the seal.

In the situation described in this article, a pump designed to be operated horizontally was installed vertically. The seal chambers may or may not have flush and vent ports installed. Even though it is equipped with two single seals, they are naturally vented and flushed by the pumped liquid when used horizontally.

Once the pump is installed vertically, the upper seal chamber acts like the cup with the open end down. The upper seal runs dry. In this case, the pump is pumping clear cooling water. The suction pressure is probably lower than in the seal chamber. If no port is provided, the plant operator recommends drilling and tapping a hole in the seal chamber as high as possible.

If this is the case, connect the seal chamber vent that was just made with a similarly drilled and tapped hole in the suction line. Connecting them creates flow from seal to suction line, commonly called a suction recirculation system. The clear cooling water is unlikely to plug the line. The higher the pressure differential, the greater the flow. By doing so, it is drawing air and water from the seal chamber continuously

If the pump were in a flooded suction condition with the suction line pressure higher than the seal chamber, the air release valve may be an option. This does not address every possible cause of seal failure, but it eliminates an environmental problem created by operating a pump designed for horizontal use in a vertical orientation. Proper venting of the seal chamber is critical, particularly in a vertical shaft pump.

Vertical turbine pumps (VTPs) are used in numerous industries, including power generation, pulp and paper, mining, and water and wastewater. The shafts on these pumps extend many feet under the ground, sometimes as deep as 2,000 feet.

Because of this and the often harsh and remote conditions in which they operate, these pumps must be reliable. For them to be reliable, the bushings and seal technology installed in them must survive for long periods.

According to a June 2018 Pumps & Systems article by the Electrical Apparatus Service Association (EASA), “The removal and reinstallation expenses for VTPs can be significant for long-set pumps that must be disassembled and reassembled on-site. Proper repair engineering, techniques and attention to dimensional integrity pay dividends in extended operational life for the machine.”

This article will examine the operating and maintenance challenges of VTPs and how users can solve them with a combination of technology for prolonged pump life.

Operations often begin in dry-run conditions, which potentially overheat and damage traditional bushings and seals. There is a need for assets that can withstand this short-lived but harsh operation. In addition, dirt, rocks and other debris may be lifted with the water. This causes wear and damage to the shaft and/or the bushing if the bushing material is ineffective.

Another issue is shaft deflection or “the bending of a pump shaft that occurs when the velocity of liquid being pushed by an impeller is not equal at all points around the impeller.”1 This deflection causes premature packing or mechanical seal wear. It also results in flush water leakage and difficulty in controlling the flush water usage.

To mitigate problems with wear, leakage and premature component failure, shaft stabilization is required. Also, selecting a seal technology that can withstand deflection will improve stuffing box/seal chamber reliability.

Shaft deflection, damaged bushing and damaged seals are problems when using VTPs. The first step for reliable operations is stabilizing the shaft with bushings. Some bushings can stabilize shafts in:

Sealing challenges travel hand in hand with maintenance challenges. Dirt, grit and rocks will move into the seal chamber/stuffing box with the liquid. To mitigate damage to the seal, proper flushing and cooling is required. In many VTP applications, clean water may be the best lubricant. However, end users and maintenance professionals should consult with the seal manufacturer.

Specialized barrier fluid may be required to maintain seal health, remove particulates, and properly cool the stuffing box or seal chamber. Shaft deflection can cause wear issues within the stuffing box or seal chamber as well. While the bushings minimize deflection, end users should select a seal that can tolerate some movement and the potentially abrasive environment.

A cartridge seal with high radial clearances is ideal for VTPs. A cartridge seal that is completely self-contained, preassembled and preset before shipping simplifies installation. These features also support quick and easy impeller adjustments that do not interfere with the correct axial setting of the seal.

The seal’s life depends on choosing the most effective materials of construction and its operating environment. This environment includes how clean the seal chamber/stuffing box is, and how cool the faces are.

For a seal installed on a VTP, a vented gland eliminates air entrapment and improves cooling efficiency. Machined glands offer superior corrosion resistance and strength and can be modified to fit

Each seal should be customized for each application (Image 4). For example, if packing had been used but the seal is now being placed in the stuffing box, the seal will need to fit. If a seal chamber is in place, then the seal will be different.

For more on selecting a seal for the correct application, see the article “The Role of Application in Seal Reliability” from the September 2019 issue of Pumps & Systems.

Vertical Turbine Pumps are commonly found in harsh environments- slurries, sea water, boiler feed, cooling tower, recirculation, dewatering, petro-chemical transfer, high pressure condensate, to name but a few.

By design, the very long shafts create substantial radial movement, so much so that pump manufacturers often design in bushings all the way down the column. These bushings are normally made of bronze, rubber, or carbon and all exhibit accelerated wear due to their material weaknesses. As they wear, the shaft moves increasingly freer and frequently wear the bushing housings themselves. This radial movement all along the shaft transmits to the stuffing box and causes both packing and mechanical seals to fail prematurely.

The SealRyt® Corporation’s patented technology presents the solution for successful sealing through use of a bearing (BLR, BRG, or ORM) in the bottom of the stuffing box and either SealRyt®‘s application-specific, Premium textiles or customer-supplied mechanical seal. Use of the PackRyt® system ensures the portion of the shaft in the stuffing box remains concentric with the bore thus enabling sealing method of choice to perform well.

Also, the SealRyt® Corporation has manufactured many bearings for replacement of OEM bushings all the way down the column. Arranged in OEM holders or “clamshells”, the SealRyt® bearings steady the entire shaft and far out-live the OEM standard. SealRyt® also offers factory installation of column bearings in customer supplied clamshells (press fit, shrink fit, etc. ).

Vertical single stage or multistage pump with mixed or axial flow impeller design, broad hydraulic coverage provides best selection to meet specific operating conditions. Fabricated or cast iron, surface or underground discharge head, shaft and bearing combinations promote long life with options of open or enclose line shaft construction. It can be driven by VHS NEMA Standard motor, VSS motor or diesel engine through right angle gear box.

The new generation of FLUX progressive cavity pump VISCOPOWER F 570 for Industry & Hygienic with planetary gear is suitable to pump thin to medium viscous media. The positive displacement pump ...

... new generation FLUX eccentric worm-drive pump VISCOPOWER F 580 for Industry & Hygienic with bearing flange is suitable to pump thin to highly viscous, pasty and still flowing media. The positive displacement ...

The small drum pump JUNIORFLUX F 310 with fixed motor FEM 3070 and mechanical seal is especially suitable for pumping comparatively small quantities out of containers such as canisters ...

The ECP is designed to lubricate bearings and linear guides with oil or fluid grease. The pump works reliably in single-line systems of up to 20 lubrication points and a main line length of approximately 15 meters. It ...

The B70V SanitaryPlus food pump is a powerful positive displacement pump for heavy-sensitive, viscous and viscous media up to the limits of flowability. It pumps liquid foodstuffs, ...

The B70V SanitaryPlus food pump is a powerful positive displacement pump for heavy-sensitive, viscous media with and without fiber or solids content up to the limits of flowability. It pumps ...

... reliability, safety and last but not least functionality are important. The submersible centrifugal pump was specially developed as a vertical, wet-installed pump for the rapid emptying ...

When the application calls for high-volume and/or high head vertical pumps, the practical solution is the use of the Hazleton® vertical, double-suction, Twin-Volute VDM. Designed for ...

When the application calls for high-volume vertical pumps, the practical solution is the use of the Hazleton® vertical, double-suction, Twin-Volute VDS and VND. Designed for slurry handling ...

The VN Family of pumps is designed for the ultimate flexibility in slurry handling applications. The vertical cantilever design eliminates submerged beargings, top suction design eliminates air binding, ...

Vertical single-stage submersible motor pump for wet installation, with cutter (S), stationary or transportable version. Amarex N pumps are floodable, single-stage, single-entry close-coupled ...

Chemical pump with electrical temperature control. The CHEM series is designed to be easy to maintain. Separate pump covers allow a quick inspection of the inner workings from both sides of the pump. ...

Horizontal or vertical seal-less volute casing pump in back pull-out design with fully enclosed canned motor, low noise emission, with radial impeller, single-stage, single-entry, casing connecting dimensions ...

... LSC pump is a submersible single-phase portable residue drainage pump. The specially designed bottom plate enables the pump to drain down to 1mm water level. It has a swing check valve ...

... surface from scratching. Though the pump is a single-phase unit, it has the durability equivalent to three-phase drainage pumps as the wear parts are made of abrasion-resistant materials. The pump ...

The TVM-series is a vertical multistage centrifugal pump designed for handling freshwater. Since it is an in-line type, the pump occupies less installation space. The major wetted parts ...

... Product Line Series 493 and 4193 steel external pumps are available in capacities up to 75 GPM. These pumps can be furnished directly connected to a 50HZ or 60 HZ motor. Series 493 is designed for vertical ...

... plants. The inline housing design allows you to install it in pipeline systems to protect the following equipment, such as your pumps. Despite the pipeline installation, the macerator offers you the proven FSIP® concept ...

ViscoTec dispenser 3VMP18, as a volumetric dispensing pump for larger volumes, ensures smooth and reliable product supplying of abrasive, high-filled or shear sensitive material - with a repeatability of +/- 1 %!

ViscoTec dosing and filling pump type RD-hygienic for food and cosmetics is a volumetric conveying pump based on the endless piston principle. Suitable for discontinuous or continuous pulsation-free metering ...

The DSL pumps are single-stage, double-suction, vertical, centrifugal pumps. The design of the suction side provides for a perfect flow, and the inlet is placed in line with the outlet.

The durable Waukesha Clean-out-of-Place (COP) Positive Displacement "Can-Do Pump". Versatile in application, its reliability has made it the industry ...

The heavy-duty type TPC-M vertical cantilever pump without bottom bearing is designed with run-dry capabilities to pump solids-carrying acids, alkalis and chemically contaminated effluents ...

The heavy-duty type TPC vertical cantilever pump without bottom bearing is designed with run-dry capabilities to pump solids-carrying acids, alkalis and chemically contaminated effluents ...

The ST42 - 22 out of tank vertical pump range benefits from proven design features gained through over 60 years of experience and developments, and has been specially designed to handle the transfer of ...

By using your existing discharge head, and adapting a new pump assembly, you can utilize your existing piping and have a pump that can continue to be serviced into the future.

We use the latest in epoxy coatings, both NSF quality and industrial quality to minimize corrosion of the pump components and maximize the life of the pump.

Grandfos pump seal used for stainless steel vertical multistage centrifugal pump.It is suitable to grundfos pump CR(N) 32, 45, 64, 90, 150 Multi spring Seal for Grudfos Hilge® pumps.

Distributor of vertical pumps. Vertical mounting & discharge type pumps include centrifugal submersible, split case & sump pumps & vertical turbine universal transfer pumps. Vertical pumps are available in various configurations & drive types including hydraulic, single & multi stage, end & double suction, non-clogging, single & three phase & auto & manual operation types suitable for liquid handling applications. Features include parts interchangeability, heavy-duty, temperature & moisture sensors, semi-open & adjustable impellers & self lubricating bronze sleeve bearings. Capabilities include up to 6,000 gpm delivery, 800 ft. head, 3450 rpm speed & 720 psi pressure. Applications include municipal, commercial, steel mills, metal finishing, chemical, paper, petroleum, agriculture & general industrial.