Description Accessories Description Freudenberg Sealing Technologies (formerly Tobul) poppet spring used with TRBT30 and TBR50 Bladder accumulators returns the valve to the closed position within the valve stem to maintain an air-tight seal by forcing the valve to the valve seat. The poppet spring accumulates kinetic energy during the contraction and the energy is dissipated upon expansion. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories Freudenberg NOK Sealing Technologies TBR30-15LMFA Bladder Accumulator, 3000 PSI, 15 Gallon, Hydrin (ECO), SAE-24 Freudenberg NOK Sealing Technologies TBR30-11VMFA Bladder Accumulator, 3000 PSI, 11 Gallon, FKM (Viton), SAE-24 Freudenberg NOK Sealing Technologies TBR30-.2NMD Bladder Accumulator, 3000 PSI, 1 Qt, BUNA, SAE-16 ("U" Stamp Optional) Freudenberg NOK Sealing Technologies TBR30-.2BMD Bladder Accumulator, 3000 PSI, 1 Quart, BUTYL, SAE-16 ("U" Stamp Optional) Freudenberg NOK Sealing Technologies TBR30-15VMFA Bladder Accumulator, 3000 PSI, 15 Gallon, FKM (Viton), SAE-24 Freudenberg NOK Sealing Technologies TBR30-10VMFA Bladder Accumulator, 3000 PSI, 10 Gallon, FKM (Viton), SAE-24 Freudenberg NOK Sealing Technologies TBR30-15BMFA Bladder Accumulator, 3000 PSI, 15 Gallon, BUTYL, SAE-24 Freudenberg NOK Sealing Technologies TBR30-10LMFA Bladder Accumulator, 3000 PSI, 10 Gallon, Hydrin (ECO), SAE-24 Freudenberg NOK Sealing Technologies TBR30-10EMFA Bladder Accumulator, 3000 PSI, 10 Gallon, EPR, SAE-24 Freudenberg NOK Sealing Technologies TBR30-10BMFA Bladder Accumulator, 3000 PSI, 10 Gallon, BUTYL, SAE-24