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Filtration Pump – Centrifugal Pumps

Intro

Chesterton Asia Pacific case study APAC0003 – Chesterton products – ARC

Chesterton

 

 

ARC industrial coatings are engineered to protect metal and concrete surfaces from the damaging effects of abrasion, erosion, and chemical attack.

Standard Chesterton® products portfolio including ARC Industrial Coating are offered only through our distribution partners, strategically located to support the Asia Pacific market. To discover more about ARC solutions visit https://arcindustrialcoatings.chesterton.com

Products featured in the case study:

ARC HT-S ARC Abrasion Epoxy

Challenge

Issue

The impeller of a centrifugal pump in an oleochemical application, required frequent unscheduled maintenance because of a build-up of Copper Chromate (catalyst) which had impacted into the surface of the impeller, gradually reducing internal clearances and putting an additional drain on the electric motor current until it tripped.
Consequently, production downtimes were very frequent as the impeller must be cleaned of the catalyst every three months.

Goals

The customer goal is to extend MTBF (mean time between failures), reduce maintenance costs and improve pump life span.

Root Cause

The built-in catalyst of the impeller causes the pump motor to overload due to lower impeller hardness compared to the catalyst.

Catalyst built up at Impeller (needle gun required)

Solution

Preparation

  • Hot water steam pressure wash was needed to remove the grease from a newly machined impeller.
  • Grit blast to Sa 2.5 with 3mil (75μm) angular profile.

Application

  • Apply three coats ARC HT-S to DFT(0.9 – 1.2mm) on the impeller, in the internal pump case and the backplate.
  • Dynamic balancing of the centrifugal pump impeller

ARC HT-S is A 100% solids glass/ceramic reinforced novolac epoxy lining for high temperature aqueous cold wall corrosion conditions.

ARC HT-S industrial coating/lining is designed to:

  • Protect and upgrade new and old metal equipment
  • Perform in immersed aqueous solution conditions up to 150°C (302°F)
  • Replace exotic alloys, engineered plastics, ceramics, and conventional coatings
  • Easily apply by roller, brush, squeegee, or airless spray​

New Impeller Condition Before Grit Blast

Results

Client Reported

By using ARC HT-S, the equipment service life is extended, reducing downtime. ARC HT-S provides long-term protection, eliminating under-film corrosion. Now scheduled maintenance is only necessary every eight months with a quantifiable cost reduction of 15%.

Additional Benefits

The built-up catalyst is now easy to clean by using water pressure washing. The previous process required cleaning with a needle gun.

Client Follow Up

The customer requested to update all the pumps in the process loop.

Final Coat of ARC HT-S

Impeller Condition After
8 months

About us

Chesterton

Chesterton® is a world leader in helping process industry companies and manufacturers improve the reliability and efficiency of their rotating, stationary, and fluid power equipment platforms. Chesterton® is known across a wide range of industries for our award-winning pump and valve sealing solutions, applications expertise, equipment maintenance and wear-prevention products, and knowledgeable hands-on local service.​

visit https://arcindustrialcoatings.chesterton.com/

Mentioned in the case study:

SJP Sealing Technology (S) Pte Ltd
Exclusive Distributor of Chesterton products
Locations: Singapore and Malaysia

® Registered trademark owned by A.W. Chesterton Company
Case Number APAC003 – Issued 07/20
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