Description Literature Description Freudenberg Sealing Technologies (formerly Tobul) gas valve guard for TBR30-2.5NMFA, TBR30-5NMFA, TBR30-10NMFA, TBR30-11NMFA, TBR30-15NMFA Series Bladder accumulators, phosphate coated, protects the valve during handling, transportation, storage and use with a maximum PSI pressure of 3000. The gas valve guard does need to be removed to provide access to the valve. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories