Test Procedures and Information

Test Procedures and Information

Value Engineered Products, Inc. has designed a line of thermal hanger shields to provide both superior support and insulation capabilities to accommodate a vast array of hanger types and pipe spans encountered in the field. To insure that our products meet 'real world' mechanical system requirements, Value Engineered Products has conducted extensive destructive testing on our products.

All tests performed by Value Engineered Products are 'Design Proof Tests' as defined by the Manufacturer's Standardization Society of the Pipe, Valve and Fitting Industry (MSS) as detailed in the MSS SP-89 document.

Tests on multiple samples follow the physical test method detailed in Paragraph 7.3.3a. of the SP-89 document and to the American Standard Testing Method (ASTM) C-165A standard. Results from the physical tests are the basis of analytical methods and formulae used to determine a safe load rating for various component sizes, as per paragraph 7.3.2.3a. of the same SP-89 document.

In these tests, compression of the calcium silicate is measured in hundredths of an inch as pressure is applied to the sample positioned on the test bed. This compression is then expressed as a percentage in relation to the original thickness of the insulation material.

While 10% compression is a recognized allowable standard, Value Engineered Products' samples must show no more than 5% compression at three times the anticipated load to be considered acceptable. Testing continues beyond this point until visible changes, such as cracks in the insulation material or dimpling of the steel protection shield are observed.

Testing is an ongoing event and is conducted on a variety of devices. Results are compared to insure uniformity and consistency in our final products.

Test machines include:

  • Enerpac Corporation hydraulic press with a calibrated ram and No-Shok glycerin filled gauge, 8000 pound capacity - Value Engineered Products, Inc., Denver CO.
     
  • Instron Series IX Testing Device, 20,000 pound capacity - Johns Manville Laboratories, Littleton, CO.
     
  • Southwark/Emery Press with calibrated digital readout, 100,000 pound capacity - IIG-LLC, Fruita, CO.

Test results are compiled and analyzed. These results are incorporated into the charts shown on Page 8 of the V.E.P. catalogue. Additionally, each submittal sheet has a table showing 'Allowable Loads - Recommended Spans' for quick, convenient reference.

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