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Electric heating option added to vane pumps
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Product news April 2011
Seal can improvee MTBF Seal specialist Scenic Seals, based in Taiwan, has developed Carlife 99SS, a single cartridge seal, for use in high impurity fibre, slurry, abrasive, and impure solid content duties. Carlife 99SS is an extension of Carlife 99 and uses the same design concept, which includes springs that are isolated from contaminants, corrosion, and crystallization. They are built in statically to prevent from falling off, and are not subjected to any effect of centrifugal force or stress. This can help extend Mean Time Between Failure (MTBF). The seal faces are agile and receptive to vibration, or axial and radial movements, which prevent faces from premature failure. The structure has a radial run-out tolerance of ±0.5mm and can counteract shaft displacement, appropriate for large vertical pumps with deviating operation. During operation, the seal faces are designed to line-on-line, ensuring both faces are precisely in closed contact at all times. The faces also have preventive three-body-abrasion ability, which make them ideal for slurry and heavy mineral duties. Carlife also has a throw away design concept in its cartridge seal design, whereby the gland is in two sections (inner gland and outer gland), called a separable gland. The inner gland contains all the seal components as a cartridge, which can be repaired or replaced easily. Variable types of inner gland assemblies can be installed or mounted to
The Carlife cartridge seal.
one particular outer gland. Since the outer gland is mounted over the inner gland, a rubber rides on a groove of the inner gland which acts as a stopper to keep the outer gland from falling off. The outer gland can be rotated freely to ease the alignment with respect to mounting studs. While the inner gland is built and conformed to specific material, the outer gland may not since it is not in contact with the process; it can be manufactured with less expensive material. The Carlife 99SS series of seal faces have a large exposed area, improving the self cooling effect, eliminating the need of flush liquid. The range is conformed to DIN & ANSI, and is applicable to all rotary equipments with standard and big bore dimensions. The seals can be used in plant FGD hydrodesulphurization, oil-refining, pulp and paper, food and beverage, pharmaceutical, power plant, and water and wastewater treatment. www.scenic-seals.com
Electric heating option added to vane pumps Blackmer has upgraded the 4 in model of its NP Series Sliding Vane Pumps with optional electric heating. The 4 in model now joins the previously upgraded 2.5 in and 3 in models, completing Blackmer’s line of NP Series pumps with this option. The Electric
Heating option may be used in place of jacketed heads in order to provide pump heating for applications that normally require jackets, such as handling asphalt, bitumen, molasses, lube oils, etc. The company says it will continue to offer jacketed heads for customers who need NP pumps with steam and hot-oil capabilities. Blackmer NP Series pumps are designed to offer maximum versatility for handling a wide variety of clean, non-corrosive liquids, including fluids of varying viscosities and temperatures. The pumps have been designed to minimize sheer and agitation while providing improved self-priming and dry run capabilities.
Cutaway of the Blackmer mechanical seal.
www.pumpsg.com www.worldpumps.com YYYMUDEQOƃWKFHWVWTG
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Product news April 2011
Seal can improvee MTBF Seal specialist Scenic Seals, based in Taiwan, has developed Carlife 99SS, a single cartridge seal, for use in high impurity fibre, slurry, abrasive, and impure solid content duties. Carlife 99SS is an extension of Carlife 99 and uses the same design concept, which includes springs that are isolated from contaminants, corrosion, and crystallization. They are built in statically to prevent from falling off, and are not subjected to any effect of centrifugal force or stress. This can help extend Mean Time Between Failure (MTBF). The seal faces are agile and receptive to vibration, or axial and radial movements, which prevent faces from premature failure. The structure has a radial run-out tolerance of ±0.5mm and can counteract shaft displacement, appropriate for large vertical pumps with deviating operation. During operation, the seal faces are designed to line-on-line, ensuring both faces are precisely in closed contact at all times. The faces also have preventive three-body-abrasion ability, which make them ideal for slurry and heavy mineral duties. Carlife also has a throw away design concept in its cartridge seal design, whereby the gland is in two sections (inner gland and outer gland), called a separable gland. The inner gland contains all the seal components as a cartridge, which can be repaired or replaced easily. Variable types of inner gland assemblies can be installed or mounted to
The Carlife cartridge seal.
one particular outer gland. Since the outer gland is mounted over the inner gland, a rubber rides on a groove of the inner gland which acts as a stopper to keep the outer gland from falling off. The outer gland can be rotated freely to ease the alignment with respect to mounting studs. While the inner gland is built and conformed to specific material, the outer gland may not since it is not in contact with the process; it can be manufactured with less expensive material. The Carlife 99SS series of seal faces have a large exposed area, improving the self cooling effect, eliminating the need of flush liquid. The range is conformed to DIN & ANSI, and is applicable to all rotary equipments with standard and big bore dimensions. The seals can be used in plant FGD hydrodesulphurization, oil-refining, pulp and paper, food and beverage, pharmaceutical, power plant, and water and wastewater treatment. www.scenic-seals.com
Electric heating option added to vane pumps Blackmer has upgraded the 4 in model of its NP Series Sliding Vane Pumps with optional electric heating. The 4 in model now joins the previously upgraded 2.5 in and 3 in models, completing Blackmer’s line of NP Series pumps with this option. The Electric
Heating option may be used in place of jacketed heads in order to provide pump heating for applications that normally require jackets, such as handling asphalt, bitumen, molasses, lube oils, etc. The company says it will continue to offer jacketed heads for customers who need NP pumps with steam and hot-oil capabilities. Blackmer NP Series pumps are designed to offer maximum versatility for handling a wide variety of clean, non-corrosive liquids, including fluids of varying viscosities and temperatures. The pumps have been designed to minimize sheer and agitation while providing improved self-priming and dry run capabilities.
Cutaway of the Blackmer mechanical seal.
www.pumpsg.com www.worldpumps.com YYYMUDEQOƃWKFHWVWTG
5