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Boiler Feed Water Seal
Single Acting, Dependent of Direction of Rotation |
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Mechanical Seal Series 800HB2/CG |
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Face Materials:
Carbon / Silicon Carbide
Metal Parts:
SS 316, SS 304
Secondary Seal:
Elastomers
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Boiler feed water Pumps |
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HSD Pumps |
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Booster Pumps |
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Drip Pumps |
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Condensate Pumps |
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Fuel Oil Pumps |
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Single acting |
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Balanced |
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Inside mounted |
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Dependent of direction of rotation |
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Shaft Diameter d : |
65 ... 150 mm |
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Pressure p : |
50 ... 140 bar (max) |
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Temperature t : |
– 20 ... +250O C (API plan 23) |
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Velocity v : |
< 50 m/sec |
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This is a unique seal developed to meet stringent technical requirements of Boiler feed water pumps. Rotating
mating ring design makes it suitable for high speed application & avoids critical requirments of stuffing box
face squareness. Both the faces are having strong positive drive & locking arrangment which make seal very strong
and sturdy.
Thermodynamic circulation grooves inscribed on the rotating faces boost the cooling of the sliding faces by
reducing the coefficient of friction and protecting the seal against thermal over loading. Increased collent flow
effected by the pumping screws & the fluid guiding channel combine to force the cold water into the gap between
seal ring and mating ring, blowing out gas bubbles and dirt praticles and picking up frictional heat.
In view of risk of dynamic distortion because of high sliding velocity of over 25 m/sec the springs are located
in the stationary part. For this seal 20,000 hours of continuous running may be viewed as normal. Attainment of
over 79000 hours is possible. |
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