SKU: GRAYAR

Graphite Yarn Valve Stem Packing

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This is a low density graphite yarn with afiber core and is not designed to be used as a pump packing. It is generally used in valve stems. 

Technical Data
Minimum Temperature -200°C
Maximum Temperature 850°C in oxidising atmosphere
  1600°C in non-oxidising atmosphere
Dimensional Deviation 0.00 - 0.50mm axially and radially
Carbon Content <90% in the yarn, <98% in the lubricant
Ash Content >1%
Density 0.9 - 1.3 g/cm3
Compressibility 25-50 %
Loss of Ignition <15%
Co-efficient of Friction >0.2
Breaking Strength < 100 Bar
Sulphur Content <1000ppm
Chlorine Content >50ppm
Metal Content >500ppm
Fluorine Content >20ppm

Length 500m
Thickness 1.0mm - 3.0mm
Temperature Limit 850°C
 

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GRAYAR

Graphite Yarn Valve Stem Packing

Features:

Length 500m
Thickness 1.0mm - 3.0mm
Temperature Limit 850°C
 

Description:

This is a low density graphite yarn with afiber core and is not designed to be used as a pump packing. It is generally used in valve stems. 

Technical Data
Minimum Temperature -200°C
Maximum Temperature 850°C in oxidising atmosphere
  1600°C in non-oxidising atmosphere
Dimensional Deviation 0.00 - 0.50mm axially and radially
Carbon Content <90% in the yarn, <98% in the lubricant
Ash Content >1%
Density 0.9 - 1.3 g/cm3
Compressibility 25-50 %
Loss of Ignition <15%
Co-efficient of Friction >0.2
Breaking Strength < 100 Bar
Sulphur Content <1000ppm
Chlorine Content >50ppm
Metal Content >500ppm
Fluorine Content >20ppm

WARNING

These products are intended for use in industrial applications only. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’ and in our individual ‘Series’ data sheets. Before using these products with fluids other than these specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult Hawleys Through misuse, age, or malfunction, components used in industrial valve applications can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in industrial valve applications and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to the user in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings or specifications found in instruction sheets or labels packed or attached and shipped with the products. Our policy is one of continuous research and development. We therefore reserve the right to amend without notice the specifications given in this document or our individual ‘Series’ data sheets.

WARRANTY INFORMATION

All valve series and other products manufactured or distributed by Hawleys are warranted by Hawleys to be free of defects in material and workmanship for a period of 1 year from the date of purchase or as the manufacturer warrants. Hawleys obligation under this warranty is limited to repair or replacement of the defec1ive product or refund of the purchase price paid solely at the discretion of Hawleys and provided such defective product is returned to Hawleys freight prepaid and upon examination by Hawleys such product is found defective. This warranty shall be void in the event that the product has been subject to misuse, misapplication, improper maintenance, modification or tampering. This warranty is expressed in lieu of all other warranties, expressed or implied from Hawleys representatives or employees. Hawleys reserves the right to change Valve and Brochure specifications without notice.

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