b'DOUBLE & TRIPLE OFFSET BUTTERFLY VALVESFIRESAFE, FUGITIVE EMISSION& CYCLE TEST CERTIFICATES API 607,6th& 7th Ed. API 622 & ISO 15848-1 API 622 2011 2nd EditionnAPI607ISO10497-5 API622 2011 2nd EditioFiresafe Certified Endurance Test Certified FugitiveISO 15848-2ISO 10497-5Emission CertifiedFiresafe Certified Fugitive Emission Certified18 SUPERSEAL - Butterfly Valves SUPERSEAL - Butterfly Valves 19'