{"data":{"id":"us/40-cfr-table-27-to-subpart-g-of-part-63","jurisdiction":"us","citation":"40 CFR Table 27 to Subpart G of Part 63","heading":"Table 27 to Subpart G of Part 63—Summary of Internal Floating Deck Fitting Loss Factors (KF) and Typical Number of Fittings (NF)","body":"Deck fitting type Deck fitting loss factor (KF) a Typical number of fittings (NF)\nAccess hatch 1.\nBolted cover, gasketed 1.6\nUnbolted cover, gasketed 11\nUnbolted cover, ungasketed b 25\nAutomatic gauge float well 1.\nBolted cover, gasketed 5.1\nUnbolted cover, gasketed 15\nUnbolted cover, ungasketed b 28\nColumn well (see Table 24).\nBuiltup column-sliding cover, gasketed 33\nBuiltup column-sliding cover, ungasketed b 47 10\nPipe column-flexible fabric sleeve seal 19\nPipe column-sliding cover, gasketed 32\nPipe column-sliding cover, ungasketed\nLadder well 1.\nSliding cover, gasketed 56\nSliding cover, ungasketed b 76\nRoof leg or hanger well (5 + D/10 + D 2/600) c.\nAdjustable b 7.9\nFixed 0\nSample pipe or well 1.\nSlotted pipe-sliding cover, gasketed 44\nSlotted pipe-sliding cover, ungasketed 57\nSample well-slit fabric seal, 10 percent open area b 12\nStub drain, 1-in diameter d 1.2 (D 2/125) c.\nVacuum breaker 1.\nWeighted mechanical actuation, gasketed b 0.7\nWeighted mechanical actuation, ungasketed 0.9\na Units for KF are pound-moles per year.\nb If no specific information is available, this value can be assumed to represent the most common/typical deck fittings currently used.\nc D = Tank diameter (feet).\nd Not used on welded contact internal floating decks.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart G—National Emission Standards for Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry for Process Vents, Storage Vessels, Transfer Operations, and Wastewater"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"b27ace0d034fbc0c1b9712406939f447a2d0e4520ed5486cae0c43fd6b92734d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-26-to-subpart-g-of-part-63","next":"us/40-cfr-table-28-to-subpart-g-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}