Trip mode device
The trip mode device SSB ensures that even if the central power supply fails, the related valve can fully open or close.

It is also used as a quick stroking device to achieve fast stroking speeds of the valve.
It can be directly mounted on the hydraulic actuator ASM-E or on the open rack Multi-Station Manifold (MSM).
One 3/2-way solenoid valve with two releasable check valves.
Can be mounted on ASM-E or open rack Multi-Station Manifold (MSM).
Adjustable throttle for actuator speed adjustment.
Energise to activate or de-energise to activate options.
Two sizes available.
Designed for mineral oil and/or fire resistant hydraulic fluids.
Hydraulic station accumulator or local accumulator for fail open or fail close function is possible.
A local wall mounted accumulator will be exclusively be used for fail function.

More info : https://www.imi-critical.com/products/ssb/