About Lee Evans

Sales Manager At Priest Electric

Set Up of Plan 52 Reservoirs Seal Pots

Piping Plan 52 Set Up (Graphics Courtesy of Hydraulic Institute, www.pumps.org) Dual mechanical seal with reservoirs can be used with good effect in implementing Plan 52 to provide buffer fluid resulting in no direct leakage of process fluid to the atmosphere. Circulation between the reservoir and outer seal is maintained by tangential flow porting [...]

By |2020-10-20T22:08:18+00:00October 20th, 2020|Mechanical Seals, Tech Tip|0 Comments

Best Efficiency Point

Best Efficiency Point (B.E.P) We hear a lot about operating pumps at the best efficiency point from pump manufacturers and engineers.  It is noted on most pump curve drawings and is common terminology implementing or troubleshooting pump installations.  The Best Efficiency Point (B.E.P.) is described as the point where we have the least amount [...]

By |2020-08-28T18:16:33+00:00August 27th, 2020|Pumps, Tech Tip|0 Comments

Best Seal Practices for Pump Start-up After An Extended Shut-Down

Best seal practices for a pump start-up after an extended shut-down Review and follow pump start-up procedures. Rotate shaft by hand to make sure seal faces are not stuck together. Assure bolts and screws are tightened to proper torque settings. Check motor rotation. Vent Pump to assure it is not vapor locked. Assure mechanical [...]

By |2020-06-22T17:30:43+00:00June 20th, 2020|Mechanical Seals, Tech Tip|0 Comments

AST Reservoir For Dual Mechanical Seals

AST RESERVOIR FOR DUAL MECHANICAL SEALS High Performance & Exceptional Value The AST reservior supplies a clean buffer/barrier liquid to a dual mechanical seal without an expensive piping system.  Since the AST80 dual cartridge seal has a double balanced inboard seal, the reservoir may be pressurized for tandem seal service.  Reservoirs can [...]

By |2020-02-03T17:50:53+00:00February 1st, 2020|Mechanical Seals, Tech Tip|0 Comments

Silicon Carbide vs. Tungsten Carbide Hard Sealing Surfaces

How Silicon Carbide Outperforms Tungsten Carbide Silicon Carbide out performs Tungsten carbide as hard faces in most seal applications. It's tribological properties allows for lower coefficient of friction and longer life. In heavy slurry or other extreme pumping conditions the properties are enhanced when you match silicon carbide with a silicon carbide impregnated with [...]

By |2019-09-27T15:58:58+00:00September 26th, 2019|Mechanical Seals, Tech Tip|0 Comments

Which Box Bore Is Best For Your Application?

BIG BORE A big bore provides a better machanical seal environment than a standard bore seal chamber and provides better isolation from heat.  TAPER BORE A taper bore seal chamber typically provides the best mechanical seal environment. Both types offer the following advantages  Increased radial clearance between the mechanical seal [...]

By |2019-08-27T19:09:12+00:00August 27th, 2019|Mechanical Seals, Tech Tip|0 Comments

Why Use A Flush Port

Why Use a Flush Port? It may seem like common sense, however, many users simply plug the port Most applications (ANSI pumps), a line from discharge to seal flush provides circulation to cool seal and flush solids away from the seal. For dirty applications, use a clean liquid flush from an outside source. This [...]

By |2019-02-12T20:51:22+00:00February 12th, 2019|Mechanical Seals, Tech Tip|0 Comments

Single Spring Seal vs. Component Seal vs. Cartridge Seal

Single Spring Seal vs. Component Seal vs. Cartridge Seal GOOD Single Spring Seal BETTER Component Seal BEST Cartridge Seal Positive Low initial cost Good alternative to packing Positive Inexpensive initial cost Multiple springs for even loading on seal faces Springs outside of process fluid [...]

By |2018-12-28T20:12:36+00:00December 26th, 2018|Mechanical Seals, Tech Tip|0 Comments
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