The 101223LF is an isolation flange set manufactured by BELL & GOSSETT. Designed for use with 100, NRF, PL-30, PL-36, PL-55, and PR models, this set features a 1-1/4" NPT pipe size and NPT end connections. Its flange width of 4-7/16" and overall length of 5-9/16" ensure easy installation and reliable performance. With a maximum working pressure of 150.00 PSI, this set is a dependable choice for professionals in need of isolation flanges for specific models.