The new double mechanical seal in tandem arrangement is especially well suited to the particular requirements of dry-installed and wet-installed waste water pumps. During development of the 4STQ – a double mechanical seal module – KSB’s engineers strove to ensure that its installation and removal remained as straightforward as possible. Assembly fixtures and fastening bolts are not required, and the seal’s modular design minimises downtime during maintenance inspections as well as preventing faulty reassembly.
Posts Tagged ‘mechanical seal’
Learn how to visually identify and prevent mechanical seal failures with this easy-to-use reference tool. Accessible via desktop, tablet and mobile devices, this app is an invaluable resource for maintenance personnel and reliability engineers tasked with troubleshooting seal failures and maximizing equipment uptime. More details in this video:
With the HRC N mechanical seal series, EagleBurgmann provides a seal system (version DIN 24960, Part C) for standard chemical pumps with conically opened sealed space that complies with the requirements for a standardized and application-related seal solution.
As a novelty within the HRC… N series, EagleBurgmann has now launched the optimized double seal HRC3300N on the market that has the same mounting dimensions and which uses some of the non-variable parts from the predecessor HRC3000N. A new stationary seat that does not require binding was used. This, and the improvements to the seal on the atmosphere side, makes the HRC3300N definitely more service friendly. Omitting the binding makes it possible to use the high-performance DiamondFace diamond coating, and the operating temperature increases to +200°C (+392°F). (more…)
EagleBurgmann Cartex cartridge mechanical seals are completely pre-assembled and exactly positioned component seals with lid and shaft sleeve. They are fitted in the pumps of many industrial sectors, such as e.g. in chemistry, in water applications, in the food industry and in many other applications. More than 500,000 seals have been installed in the meantime and have proven their reliability and economic efficiency.
With the DF(P)DGS6 EagleBurgmann offers reliable shaft sealing for API 610 high-performance pumps, e.g. BB3 and BB4 process pumps, and vertical pumps applied in liquefied gas fractionation, in pump stations of downstream NGL (Natural Gas Liquids) pipelines and also in CO2 applications.
Numerous plant operators experience problems incurred by temperature and pressure fluctuations in the pump. In conjunction with the low vapor pressure margin of the medium (e.g. ethane, propane), this can cause phase transitions between liquid and gas at the seal faces – they run dry. Conventional mechanical seals consequently sustain damages which results in seal failures.
Low viscosity liquids are difficult for mechanical seals because the hydrodynamic film that they create between the two rubbing seal faces is extremely thin. In order for this extremely thin hydrodynamic film to lubricate the two sealing faces, the seal faces must stay highly polished and they must run in very close proximity to each other. The self-polishing characteristic of mechanical seals with antimony impregnated, carbon-graphite primary rings and solid silicon carbide counter face rings can solve this problem. Low viscosity liquids such as Freon refrigerants, liquid oxygen, liquid carbon dioxide, propane, ethylene, and acetone are now being successfully sealed using mechanical seals with Metcar Grade M-444, antimony impregnated, carbon-graphite primary seal rings.
On January 1, 2013, Michael Stomberg (42), the previous Senior Vice President and Head of Division Mechanical Seals, became the successor to Dr. Walter Steinbach who retired from the company on December 31, 2012. Michael Stomberg (COO) is now one of three General Managers and a member of the EagleBurgmann Executive Board (TMT). Steinbach (61) had been a member of the general management since 1993, and until the end of 2012 he was responsible for different product divisions and intra-divisional topics, such as innovation management (products and processes), Supply Chain Management, or strategic projects.