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Item # DOT407LW, Special "Weld-In" DOT 407 Pressure Relief Vent

Girard’s Special Low Profile "Weld-In" (LW) Series DOT 407 Vent combines an ultra-low profile, light weight design with high flow rates to meet the most demanding needs of virtually any tank. See the table below for specific flow rates. The LW Vent welds directly to your manlid, thus avoiding expensive hot-work to the shell of your tank, and is low enough to be "retro-fitted" to most any tank, without having to alter the overturn protection.
LW Vent - Designed to weld directly to a domecover.

Unit of Measure: Imperial Metric Both

Specifications  · Performance Specifications



10 lb

Performance Specifications
MAWP Test Pressure Flow (SCFH) Exposed Surface
25 40 374512 737
25 45 431308 946
30 45 431308 946
35 52.5 484718 1156


·  Part Identification

·  STYLES-402017

·  Existing Overturn Protection "Shadow" Line


Special Weld-In DOT 407 Pressure Relief Vents
(PDF, 62KB)

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