Sensus 121-8-2 Regulator
2"REG. 2-4.25#BLACK SPRING
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QUESTIONS & ANSWERS
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Is this regulator available with a 6-10PSI Spring?
The 143-82-021-02 spring is the one. Please check if this works for you:
https://www.gsistore.com/products/sensus-143-82-021-02-spring?_pos=1&_sid=4111b9e24&_ss=r