boiler feed pump mechanical seal made in china

Structural Features: single end and multiple springs, balanced, independent rotary direction and coil driven. The coil driven structure is simple and reliable. This seal component is easy to install and the sealing performance is stable and reliable and has a longer life time.

Scopes of Application: widely used in boiler feed pumps deployed in power plants, booster pumps and other medium pressure and high speed applications. It is specifically designed for boiler feed pumps, booster pumps, clean water pumps, chemical pumps and other rotary devices.

We recognize and understand the vital role of boiler feed water pump mechanical seal in their application. With purposes including securely fastening components within systems, and contaminants prevention such as gases and liquids from navigating through enclosed and sealed areas. That is why we offer wholesale boiler feed water pump mechanical seal in different variations and diversities to ensure the integrity and efficiency of systems they will be applied to will function successfully and optimally. The different seals" types available include static that does not move along with other seals and dynamic seals that move collaboratively.

Depending on the industry and selected purpose, we consider boiler feed water pump mechanical seal requirements. Requirements are like pressure, that is pressure changes, to ensure they can withstand and do not deform by the sealed fluid, the load and how it can withstand deflection, dynamics such as the alignment and vibration, and temperature covering the environmental conditions and the heating arising from the friction of the seal operation and fluid movement.

The seals are either bolts, nuts, or washers. Seal bots are commonly used because of their benefits in being reusable, preventing fluids and contaminants from escaping even under high pressure. Nuts are essential on temperature withstanding and compatibility with screws, studs, and bolts, in addition to, easy installation. Moreover, washers can withstand high pressures and are compatible with other seals.

Zigong Zhaoqiang Sealing Products Industrial Co.,Ltd is a professional manufacturer of mechanical seals and wear-resistant materials, which has 20 years of experience in designing and manufacturing these products.

HST offers Boiler Feed pumps for high pressure multistage pump mechanical seals Suitable for KSB, Sulzer & KBL Make Pumps, these seals are used in power plants, steel Industries, pharma, oil and gas and sugar industries.

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.

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

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

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.

9. 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.

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

Buy the leading boiler feed water pump mechanical seal at Tradechina.com and perfect the way you seal your products for better safety and efficiency. The boiler feed water pump mechanical seal come in the most diverse selection that comprises numerous different types and sizes so that all users’ needs and specifications are adequately met. The boiler feed water pump mechanical seal are offered at unbelievable discount deals especially when considering their value in terms of performance.

Manufactured with robust materials and supreme designs, these boiler feed water pump mechanical seal are highly durable and give you long lifespans. Accordingly, the boiler feed water pump mechanical seal will make your life seamless because you’ll be able to seal and secure your products as needed. You will realize that these boiler feed water pump mechanical seal can be used in all kinds of settings such as homes, institutions, offices, industries, and virtually any place that requires products to be safely sealed.

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The boiler feed pump is a multistage centrifugal pump used to increase the discharge pressure of the feed water to the boiler. To deliver the feed water into the boiler steam drum, it has to raise the pressure beyond the boiler steam drum pressure. Because of the high pressure and temperature involved, boiler feed water pumps are made up of cast steel casings and shafts along with an impeller made up of stainless steel.

To achieve this condition, the multistage centrifugal pumps are used where the discharge of the first stage becomes the suction of the second stage. Such pumps are provided with the diffuser rings around each impeller that serve to increase discharge pressure. This type of pump is thus often referred as a “turbine pump.”

The shaft is protected in the way of bearings by stainless steel sleeves, where we normally use a mechanical seal to the high pressure for liquid handling. So we provide a separate lubricating arrangement. The oil within the seal chamber is maintained constantly one bar above the discharge pressure by an accumulator containing a plunger which is operated by air or nitrogen pressure.

It is preferable on a vertical pump to have shaft sealing at the pump upper end only. Mechanical seals are spring loaded to hold the sealing faces together. It is important that cooling and lubrication liquid is led to the mechanical seal from the lowest point on the pressure side of the pump to ensure that some liquid reaches there even when priming.

Special header tanks have been installed for seal lubrication in some applications. They must not run dry, and care must be taken to prevent ingress of foreign matter. Many mechanical seals incorporate a carbon face, and there is a possibility of electrolytic action in the presence of sea water. Normally this does not take place in boiler feed water pumps because we use the fresh water treated dosed with corrosion preventing chemicals as the boiler feed.

In the case of sea water pumps, we do not use the mechanical sealing arrangement- instead we use a soft packing arrangement. Stuffing box type glands may be packed with soft or metal foil type packing. The pump internal bearings may be lubricated and cooled by pumping liquid that is always available when the pump is running. A lubricator for the application of grease is also fitted in some circumstances.

The image below shows a mechanical seal arrangement. (Click to enlarge and then use the Back button in your browser to return to the same place in this article.) In the image, elements d1 and a1 bear and slide on each other, creating a seal at their interface. One group of parts is connected to the rotating shaft and the other to the machine’s case. The spring keeps the elements tight against each other, maintaining the seal and allowing for wear.

Shaft should be clearly examined especially in the area of mechanical seal arrangement if excessive wear has taken place the quality of packing used should be investigated and a larger amount of lubricant should be used while running.

Since 2007, the hot-filament Chemical Vapor Deposition (CVD) technology for crystalline diamond thin-film coatings has found its way into the mechanical seal market to combat the problems of dry running, corrosion and abrasion. This new technology has proved successful in hundreds of pumping applications in a wide range of services and duties. The reliability and lifetime of mechanical seals are improved by using diamond-coated faces. One such application involved the sealing of large boiler feed and steam generator pumps in power plants. The duty conditions for the pump’s seals can be as high as pressures up to 580 psig (40 bar), shaft RPMs up to 6,500 and temperatures up to 400˚F (200˚C). Consequently, the mechanical seal faces are highly loaded in a fluid with far less than ideal lubricating qualities. It is evident, therefore, that these applications are technologically challenging for mechanical seal manufacturers not only from a tribological perspective, but also from a corrosion viewpoint when the feed water has a low electrical conductivity or is free of impurities. This paper discusses a new seal-face treatment using hotfilament CVD manufacturing technology tested in a lab for 16,000 hours and currently used in feed pump operations in several power stations in the USA and Europe.

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