Manufacturers Standardization Society (MSS) Statement

MSS SP-58 And SP-69 Requirements

MSS SP-58 and SP-69 are widely referenced throughout the industry for insulation protection shields. Both the SP-58 and SP-69 documents reference Type 40 shields. Each document has its own ‘Table 5’ which may be referenced in individual specifications. Table 3 from SP-69 may also be included in any given specification and may warrant consideration. To correctly apply this information it is essential that the user be aware of the scope of each publication and its purpose.

MSS SP-69 - Table 3 - Specifies the maximum pipe span allowed when hangers are directly attached to the pipe.

MSS SP-69 - Table 5 - Specifies maximum allowable pipe spans as well as protection shield lengths and gauges for insulated systems installed without the use of manufactured thermal hanger shields.

MSS SP-58 - Table 5 and Paragraph 9.2 provides information for insulated pipe systems utilizing protection shields either with or without high-density inserts.

In general, the MSS SP-69 acts as a guide for installing the components of a mechanical system. It directs the reader (paragraph 5.1 Pipe Hangers and Supports - Selection and Application) to refer to the MSS SP-58 for information related to pipe supports:

"The materials of all pipe hanging and supporting elements shall be in accordance with the MSS SP-58."

The MSS SP-58 is a reference for 'material, design and manufacture' of the individual components of the mechanical system. SP-58 paragraph 9.2 specifically addresses the use of Type 40 shields both with and without the use of high-density insulation materials. Paragraph 9.2.2 supersedes the shield lengths and gauges shown in this document’s Table 5: 

"When pipe covering protection shields are used with high compressive strength inserts, the shield length and thickness shall be appropriate for the compressive strength of the insert material. The insert shall be at least as long as the shield and where a vapor barrier is required, the vapor barrier shall extend two inches beyond the shield and overlap the outside circumference by two inches."

All Value Engineered Products, Inc. units are made with high-density insulation with compressive strengths from 80 PSI up to 900 PSI. Additionally, every model includes the vapor barrier required to meet MSS-based specifications. Therefore all 360^o Value Engineered Products exceed the requirements of a Type 40 shield. The V.E.P. Quik-Shield provides the basic components necessary for field fabrication of a Type 40 shield and may meet MSS-based specifications.

Note: All MSS references and quotes in this catalogue are extracted from MSS SP-58 (2002) and MSS SP-69 (2003) with permission of the publisher, The Manufacturers Standardization Society.

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