J Flow’s SR Series spring return handle (also called dead man handle), is well designed as a heavy duty type for long term operation. The most characteristic of the SR Series is the locking device option. The SR Series is designed to mount upon the ISO 5211 direct mounting pad. This will be convenient to replace a standard handle to a SR Series. It is easy to replace the handles after long term service without discarding the entire valve. It is also economical to stock the spring handles separately.