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Time-critical valve gland packing fix for oil and gas industry client

Challenge

A high profile oil and gas end user urgently needed assistance with a Super High Pressure Steam valve gland packing sealing issue, for which they had no information about the valve dimensions or construction.  Chesterton was chosen to come up with a solution because of our work in North America, and the client had heard from our local Singapore distributor of our capabilities.

Products featured in this case study:

Chesterton 1601 Reinforced Graphite Packing

Chesterton 1601 Reinforced Graphite Packing

Chesterton 5300 Die-Formed Inhibited Graphite Ring

Chesterton 5300 Die-Formed Inhibited Graphite Ring

Solution

A Chesterton specialist flew to Singapore and spent three days working with the local distributor (SJP Sealing Technology) to prepare the stuffing box and manufactured replacement 1601/5300 packing combination.  Replacements were made and fitted within two days, with the third day watching the “warm up” to 510°C as part of the start up procedure.

Chesterton specialist inspecting 5300 die-formed graphite ring

Chesterton 5300 Die-Formed Graphite Ring

Chesterton specialist checking measurements of bespoke 5300 graphite ring

Chesterton specialist checking measurements of bespoke 5300 graphite ring

Measuring Chesterton 1601 reinforced graphite packing

Measuring Chesterton 1601 reinforced graphite packing

Chesterton 1601 – superior leakage control for isolation valves/steam valves.

  • ​Layers of graphite tape are formed into compact strands; each strand is reinforced with an Inconel® wire mesh covering
  • Strands are square​ braided to form a dense, but pliable packing
  • A corrosion inhibitor is applied to prevent stem pitting

Chesterton 5300 – Self-lubricating, low friction, high purity, die-formed ring manufactured from pure graphite ribbon tape without any fillers, binders, or resins.

  • Produced to an accurate specific density for compression resistance, elasticity and size and shape retention
  • Can withstand temperatures to 2,760°C in a non-oxidizing atmosphere
  • Incorporates an inorganic, passive inhibitor that reduces corrosive properties of graphite

Results

Our client was very happy with our responsiveness and thoroughness in terms of the repack procedure and rebuild capabilities.

The packing did not leak upon start up and continues to hold 100+ barg pressure at +500°C. The end user has invited Chesterton and SJP Sealing Technology back for their next shutdown.

About Us

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. We are 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. Chesterton product range includes mechanical seals, packing and gaskets, industrial lubricants and coatings.

® Registered trademark owned by A.W. Chesterton Company

Issued 12/2022.

Technical data reflects results of laboratory tests and is intended to indicate general characteristics only. A.W. Chesterton Company disclaims all warranties expressed or implied, including warranties of merchantability and fitness for a particular purpose. Liability, if any, is limited to product replacement only. Any images contained herein are for general illustrative or aesthetic purposes only and are not intended to convey any instructional, safety, handling, or usage information or advice respecting any product or equipment. Please refer to relevant Safety Data Sheets, Product Data Sheets, and/or Product Labels for safe use, storage, handling, and disposal of products, or consult with your local Chesterton sales representative

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