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GMM

GMM

Product catalog summary

Overview: The document provides technical specifications and guidelines for stainless steel flexible compensators used in gas burner installations. These compensators are designed to isolate vibrations and compensate for misalignment in ducting systems.

Specifications: The core component of the flexible joint is the metallic bellows, made from stainless steel AISI 321, which is designed without helical winding. The compensators can absorb axial, angular, and lateral movements as well as vibrations. The GMM series features threaded male-male connections, while the GFL and St.FB series have flanged connections.

Temperature and Pressure Ratings:

GMM: Max temperature 250°C, max pressure 2.5 bar, threaded connections.
St.FB: Max temperature 300°C, max pressure 10 bar, flanged PN 10 EN 1092.
GFL: Max temperature 250°C, max pressure 2.5 bar, flanged PN 16 EN 1092.

Deflection and Dimensions: The document provides detailed tables for maximum deflection and dimensions for each model in the GMM and St.FB series. Key parameters include axial, angular, and lateral deflections, as well as length and diameter specifications.

Installation Recommendations: To prevent damage to the bellows, torsional loads on hoses should be avoided. Flanges in carbon steel are designed to facilitate alignment and assembly, reducing detrimental tensions.

Note: All data are subject to change without notice.

Catalog excerpts

STAINLESS STEEL FLEXIBLE COMPENSATORS FOR GAS Metal flexible joints suitable for the installation of gas burners, using air under pressure, enable vibration isolation and compensate for the misalignment of ducting. The soul of the joint is the metallic bellows, achieved without helical winding, but with undulations on parallel stainless steel tube. Flexible hoses are designed to absorb axial [h], angular [Ý] and lateral [e] movements as well as vibrations. In order to avoid damages to bellow, prevent torsional loads on hoses. GMM joints are fitted with threaded male-male connections; GFL and St.FB joints with flanged connections. Bellows is in stainless steel AISI 321. Flanges in carbon steel are free, enabling alignment of the holes of flanges and counterflanges, avoiding detrimental tensions and facilitating their assembly. Series Max. Temperature Max. Pressure Connections GMM 250°C 2,5 bar Threaded cone-shaped ISO R7/1 St.FB 300°C 10 bar Flanged PN 10 EN 1092 GFL 250°C 2,5 bar Flanged PN 16 EN 1092

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