vertical pump mechanical seal supplier

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.

This cartridge grundfos mechanical seal is a smart design pump seal for grundfos CR vertical pump, this seal suit for grundfos CR CRI and CRN series vertical water pumps.

the grundfos CR mechanical seal made by lepu seal is following 100% original grundfos design, using welded type, offer strong quality for the whole mechancial seal.

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.

Lepu seal is a professional mechanical seal manufacturer in china, we make mechanical seal since 1998, after 20years development, our factory now is a leading professional mechanical seal supplier in south of china.

Our mechanical seal series cover almost all famous brand mechanical seal, such as grundfos mechanical seal, burgmann mechanical seal, john crane mechanical seal, mechanical seal, apv mechanical seal, aesseal design mechanical seal, and others too.

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.

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.

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.

Our specialization in offering a distinct collection of Multi Spring Single Cartridge Mechanical Seal, We provide our range in readymade unit, which is easy for installation with saving of time. This Cartridge Mechanical Seal are ready to install on any type of clear liquids. Such seal do not require adjustment in fitting due to factory pre-assembly hence avoid installation problem. Cartridge mechanical seals are the product of choice when reliability is a requirement. These products are proven, rugged performers in a wide range of sealing applications across industries. Cartridge seals are ideal for plant-wide standardization and save time with quick & easy installation.

Specification;ApplicationBeverages, Process Industries, Petrochemical Industries, Pharmaceutical Industries, Oil & Gas Industries, Chemicals Industries, Refining Industries, Power Plant Industries, Solvents Plants, Steel Making plants, Chilling Plant, Hot Water, Vacuum Distillation, Hazardous Liquid, Process Pumps, Mixer, Biochemistry, & Other Rotary Equipment Etc.

In mechanical Seals, we have wide range of mechanical seals for centrifugal Water pumps, industrial pumps , Vertical or horizontal multistage centrifugal pumps, gland packing and sealing components. We provide high quality & low cost mechanical seal of different types like metal bellows seals, cartridge seals, PTFE bellow seals, single or multi spring seals, dry running seals, pusher seals, non-pusher seals, rubber bellow seals and seal support systems. Our mechanical or customized seals are used in various application for pumps, mixer, gas and steam turbines, compressors and agitators where fluids, gases or steam need to be sealed. Our seals are of high quality and therefore long lasting. We are authorized dealer for some of top brands and have strong partnership tie up with various local Indian manufacturers.

In pumps, we have wide range of Vertical or horizontal multistage centrifugal pumps, end suction pumps, and chemical pumps . Our pumps are high pressure, energy efficient, low price and low maintenance. These centrifugal pumps comes in various dimensions, multiple stages, flows, type, power and output. Exposed Pumps parts to the liquid, are made of stainless steel like impeller and diffusers. Our pumps are of high quality and therefore long lasting. We are authorized dealer for some of top brands and have strong partnership tie up with various local Indian manufacturers.

Contact US at +919301322961 or to discuss your product or service requirement for mechanical seals, pumps, electric heaters, pumps spare and pump repair services.

Type 82/C – Grafoil Packing Cartridge mechanical seals are destined for petrochemical, chemical, pharmaceutical and food processing industry, for process pumps. Rotating bellows design acts to clear convolutions and prevent accumulation of debris. These bellow seals are constructed by welding a series of diaphragms together at the edges to form a bellows unit. Recommended for high temperature mediums e.g. hot oils, pitch, tar and other hydrocarbons, fuels, liquid gases and other mediums with low content of abrasives.

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.

We have carved a niche amongst the most dominant names in this domain, instrumental in providing an excellent quality range of Split mechanical Seal. Split Mechanical Seals can be installed without disassembly of the equipment, simply attach two halves over the shaft and mount like any other cartridge seal. The only split seal that can be fully pressure tested at the factory before shipping can convert a packed pump to a sealed pump easily.

Type SPT770 is a unique design with minimum components for assembling the seal and allow user to install the seal in minimum time. The finger plate spring design keeps the faces uniformly in contact. The Split Seal face is balanced covered with Split O’ Ring as a sealing member. Slots provided in the housing facilitate fitting the Seal on various Equipment’s with different PSDs for standardization.

The rotating shaft of a centrifugal pump penetrates the back end of a pump casing through a stuffing box or seal chamber. The primary purpose of a mechanical seal in a centrifugal pump is to prevent fluid from leaking to the atmosphere along this rotating shaft. Selection of the right mechanical seal for each pump application is critical when considering safety and reliability. Mechanical seal failure is typically one of the primary reasons why pumps fail. In this guide, the experts at PumpWorks will show you the steps to install a mechanical seal in your centrifugal pump with minimal downtime.

A mechanical seal requires two extremely smooth and flat (lapped) seal faces in contact, one rotating with the shaft and the other stationary with the casing. These seal faces are sealed to their appropriate holders through the use of secondary seals (o-rings or gaskets). The faces are mechanically energized and flexible so that they can be placed into contact and move to make up for static and dynamic misalignments as well as wear. The seal faces require lubrication from the fluid and break down this fluid as it tries to escape through the seal faces, resulting in slight vapor release. All mechanical seals leak…vapor…when selected and sized correctly.

You may be wondering how long the mechanical seal installation procedure will take. By following the 10 simple steps listed below, you’ll have the job done in no time.

If your pump is a ‘back pull-out’ design, remove the spacer element in the pump coupling. Then remove the casing bolts and slide the remainder of the pump away from the casing. You are now able to access the mechanical seal without having to disconnect the casing from the inlet and outlet piping. If the pump is not a ‘back pull-out’ design, you will need to disconnect the complete pump after disconnecting the coupling between the pump and motor shaft. If the pump is a close coupled design (the pump uses the shaft of the motor as its shaft and the motor directly bolts onto the back of the pump), you will need to remove the entire pump/motor. Remove the casing bolts and remove the casing.

The mechanical seal is located behind the impeller on the pump shaft. Impellers are either screwed onto the shaft or held in place via a bolt. To remove the screwed-on impeller from the shaft, use a wrench to hold the shaft in place and rotate the impeller clockwise until it is completely unscrewed. To remove a bolted impeller, hold the shaft in place and remove the bolt.

You can now directly access both the rotary and stationary seal parts. The rotary parts are typically held in place along the shaft using set screws. Remove the set screw and slide off the rotary seal parts. Remove the stationary part of the seal from the casing or seal chamber bore.

Now it’s time to place a new mechanical seal onto the shaft. Carefully slide the replacement seal parts along the shaft. Using a new o-ring or gasket material, press the stationary part into the casing or seal chamber bore. Follow the instructions for setting the rotary portion back onto the shaft correctly. This is a crucial step.

CAUTION: Always install mechanical seals in a clean working space. Don’t touch the front of the seal faces as it is susceptible to body oils and may not function properly if compromised. Keep the seal in its packaging until it’s time to install.

Use your wrench to hold the shaft in place while you screw the impeller onto the pump’s shaft using a new impeller o-ring or gasket. Or use the impeller bolt and a new o-ring or gasket to attach the impeller to the end of the shaft.

For back pull-out designs, slide the back pull-out assembly up against the installed casing and bolt it in place. Checking pump alignment will be necessary after step 9 below. For close coupled or non-back pull-out designs, reinstall the casing using the casing bolts. In all cases, torque the casing bolts in accordance with the pump Installation, Operation, and Maintenance (IOM) manual.

For back pull-out designs, the only steps remaining are to reinstall the spacer element to the existing coupling hubs along the pump and motor shaft, and make sure the mounting feet of the back pull-out assembly are bolted back into place on the pump baseplate. Realign the pump and motor. For close-coupled pumps, place the pump back and reconnect the inlet and outlet piping. For non-back pull-out pump and motor designs, replace the pump on the baseplate, reconnect the inlet and outlet piping, re-bolt the pump to the baseplate, reconnect the coupling and then realign the pump and motor.

Make sure you have refilled the pump casing by opening the inlet and outlet isolation valves. Some pump designs will require venting, so refer to your pump IOM. Before starting the pump, it is always a good idea to re-verify the rotation of the motor to make sure it is correct. This is done before reconnecting the pump and motor coupling. Bump the motor and verify rotation. Then reconnect the coupling, and the pump is ready to start.

Always review safety precautions found in the pump IOM. Always use the Pump IOM when working on any pump. Install the mechanical seals using the specific instructions from the mechanical seal manufacturer. Lastly, always make sure the pump and motor are realigned within 001” – 002”. Misalignment will cause premature mechanical seal failure.

PumpWorks is the go-to company for all your mechanical seal installation needs. Our pump manufacturing company offers over 30 years of experience in the troubleshooting, selection, application, and repair of mechanical seals. We serve a wide range of process industries such as petroleum refining, chemical, food and beverage, water and wastewater, power, and more.

Structural Features:FW-VO is the single end is balanced. The component is single dry running seal in case of bio-fermenter and Quench seal in case of vertical pumps. Special self-lubricated faces are used. this seal can replace gland packing conventionally and economically. hydraulically balanced stationary face is free from any clamping stresses which cause leakage during start-ups. The seal can tolerate large radial run out.

Scopes of Application:Mainly used in top driven vertical type agitation equipment, pharma reactors, Bio-fermenters, vertical pumps , multimills and rotocon dryers.