Blue spring 5-8.5"WC part# 143-62-021-16 for Sensus 143-80 regulator
Regular price $12.95
Silver spring 3.5-10.5"WC part# 071-03409-004 for Sensus 496 regulator
Blue spring 6-8"WC part# 071-03409-001 for Sensus 496 regulator