Radium Engineering DSV 12AN ORB To 12AN Male High Fill - 20-0935

DSV 12AN ORB to 12AN Male Low Fill

"QUICK FILL" Dynamic Safety Valves must be used when adding the dry break refueling system to the FCST, FCST-X, or any filler with a 12AN ORB female threaded vent port. The 1-piece machined part is manufactured from billet 6061 aluminum and type-II anodized. The DSV determines when the tank is full when the upper sealing ball valve floats to the top shutting off the air (vent) source. This safely prevents fuel from traveling up and out of the fuel cell vent line. The DSV serves 2 main purposes, fuel fill shut off and roll over protection.

COMPATIBILITY

• Radium FCST w/Dry Break Refueling System
• Radium FCST-X w/Dry Break Refueling System
• Other Cells with 12AN ORB Female Vent Port w/Dry Break Refueling System

The low fill DSV should be used with fuel cells that have a small footprint width x length and shorter height to the filler. This DSV will shut off venting sooner for those configurations to prevent overfilling.

The DSV should not be used with standard style fuel fillers. For that application see the rollover valve above

ROLL OVER PROTECTION

In case of an accident in which the wheels are up-ended, the the ball valve sinks sealing the vent. This safely prevents fuel from leaking out of the fuel cell vent line.

FUEL FILL SHUT OFF

Dry breaks are unique in that they seal the fill line during refueling. When the tank becomes full and the DSV valve shuts off the vent, a small amount of pressure will build in the fuel cell. This low air pressure is determined by the height of the dump can with respect to the lowest part of the fuel cell (a larger distance will result in higher head pressure). The dump can will begin to "chug". This is by design as it informs the operator that the fuel cell is full and the dry break can now be released. The residual air pressure will make its way out of the vented dry break receiver and permit the fuel level to rise slightly in the tank.

NOTES

• The vertical height of the top (shut-off) ball in the dynamic safety valve should be positioned lower than the highest point of the fuel fill point.
• The vertical height of at least one portion of the vent tubing (not included) should be positioned above the highest point of the fuel fill point.
• These internally mounted DSVs are perfect for vented dry break receivers that do not pressurize.
• The valves can easily be disassembled for cleaning, inspection, and maintenance.
• The valves are compatible with all fuel types including alcohol fuels such as methanol and E85.