Maxitrol R5210-38 Pink Spring for RV52 and R500 Regulators

Maxitrol R5210-13 Spring for RV52 & R500 Regulators Brown

Maxitrol R5210-48 Orange Spring for RV52, R500 and R500S Regulators

Maxitrol R5210-512 Blue Spring for RV52, R500, R500S Regulators

Maxitrol R5210-412 Violet Spring For RV52 R500 R500S

Maxitrol REDR325C Red Spring 10-22 1/2" NPT Regulator 325-3 Series

Maxitrol R400B10-25 2-5 Plated Spring for R400

MAXITROL R325C10-26 Plated Spring 2-6 PSI For 325-3 Regulators