Flange Bolt Hole Size 0.5 in Compatible Pipe Size 3/4 in Compatible with Brand Bell and Gossett Compatible with Grainger Part Number 3NVG4 4JA83 4JA84 4RD04 4YM17 Compatible with Series 100 Ecocirc XL NRF-33 NRF-36 PL-30 NRF-9F/LW PL-36 PL-55 PR PR NRF-22 Series 100 Compatible with Series Family 100 Ecocirc XL NRF-33 NRF-36 PL-30 NRF-9F/LW PL-36 PL-55 PR PR NRF-22 Series 100 Flange to Pipe Connection Type FNPT For Use With Potable Systems No Flange Type Standard