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RTJ Groove Gauge Set

in Flange Inspection

Price: 
AU$360
Excl GST

Designed to allow on-site and post-machining inspection for compliance of Ring-Type Joint (RTJ) grooves. The gauges are designed to cover all standard ASME B16.5 flange groove dimensions and allow inspection of both the groove seating surface condition (post assembly) in accordance with ASME PCC-1 Appendix D and the groove dimensional compliance (post machining) in accordance with ASME B16.5.

For newly machined grooves (ASME B16.5 compliance): The groove dimensional compliance is checked using “Go”/”No-Go” gauges. The small end should fit into the groove with clearance, and the large end should not fit into the groove. If either of these conditions is not satisfied, then the groove dimensions are not in compliance.

For in-service inspection of groove condition
(ASME PCC-1 Appendix D compliance):
the steel ruler supplied, should fit between the flange raised faces when the joint is assembled to ensure adequate clearance for re assembly and the gasket half profile is inserted into the groove, to determine if any groove defects are located in the seating surface region and to measure the distance across the seating surface (for classification of acceptable defect depth). In addition, the gasket profile is used to determine if any groove deformation (coining) is acceptable.

The gauge set includes full laminated instructions for
use of the gauges

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