Flowserve HV 215 - Manual (Page 10)

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Explanatory Notes
Bottom valve HWV 205/ - DN 80
Bottom valve HWV 25/ - DN 80 with tension rope
2 Hydraulic operating devices BV 0
2 Operating plates HV 25
2 Plates indicating fluids (only for bottom valves with valve plug seal made of CR)
Installation manual for loading & unloading system HV 25
Set of acceptance certificates
The following items are not scope of the supply but can be ordered separately:
Set of connecting lines as accessory kit
4 Shut-off valves DN 80
2 Valve mounting flanges
Scope of supply
The hydraulically operated loading and unloading system HV 25 is designed for filling and draining stationary
and mobile tanks containing pressure liquefied gases.
It is mainly used in tank cars carrying pressurized gases. These tank cars (TC) require a high degree of reliability,
ease of operation and maintenance and a long service life of the associated valves.
The loading and unloading system consists of the two rapid-action bottom valves, the two operating devices, the
shut-off valves, the rail hook and the tension rope. The connecting lines required for operating the loading and
unloading system are either made of hydraulic tubes and hydraulic hoses or entirely of hydraulic hoses.
The bottom valves type HWV 205/ - DN 80 and type HWV 25/ - DN 80 (with control unit) are designed for
installation in the valve-mounting flanges located at the bottom of the vessel. Both bottom valves are always
opened or closed together. A manifold connects the bottom valves directly with the shut-off valves. Both valves
can either be used for the liquid phase or the gas phase.
The operating devices consist of a hydraulic hand pump and one indicating piston for the liquid phase and one
for the gas phase. They are attached to the left and right hand side of the tank car, which means that the bottom
valves can be opened from either side of the tank car by actuating the respective operating device.
During the loading/unloading process the rail hook connected to the tension rope keeps the bottom valves in the
open position. In the event of an emergency, e. g. emergency shut-off or inadvertent moving of the tank car, the
rail hook is disengaged from the rail and the bottom valves close instantaneously (rapid-action closing).
Description