CASE STUDIES:

Patented Mechanical Seals Having "Self-aligning" Stationary Seats, End Pump Leaks

Problem:

A large power plant in N.Y. had a very high maintenance cost with regard to some 20" x 24" Centrifugal Pumps that pump approximately 10,000 G.P.M. of dual temp water at 150 PSI. The main problem consisted of constantly having to adjust the packing and eventually replace the worn shaft sleeves to prevent excessive leakage.

Frontline’s Solution:

Frontline was called in and converted these pumps from packing to mechanical seals. Frontline machined the stuffing box faces on site and installed its patented Permaseal® cartridge mechanical seal that is hydraulically balanced, has no springs, has a self-aligning stationary seat and sliding fastening clips to adapt to various stuffing box bolting patterns.

The Results Were:

• The water loss was totally eliminated.

• The maintenance crew found itself with a lot of extra time to attend to other important maintenance issues in the power plant.

• The replacement of the shaft sleeves was eliminated since the seals having a stationary "O"-Ring did not damage the sleeves.

• The M.T.B.O. (Mean Time Between Overhaul) was greatly increased.

• The customer saved a considerable amount of money.

One of the 20"x24" centrifugal pumps retrofitted

from packing to mechanical seals. .

(8) Eight 3 3/8" Permaseal® Cartridge seals

to retrofit the first (4) four pumps.

Frontline Industries, Inc. | 990 Chancellor Avenue | Irvington NJ 07111 | 800.890.7325 | e-mail: info@frontlineindustries.com