Pneumatic suspension valves

FBO - Pneumatic suspension valves

Produit FBO - Suspensions pneumatiques

PNEUMATIC SUSPENSION VALVES


FBO is offering:
  • suspension valves for HST or intercity trains and subways for travelers’ comfort
  • integration of these products in plates or tube circuits for a complete air suspension function.
 
The leveling valve is intended to equip the air-spring suspensions with the functions:
  • to maintain the bogie-body distance regardless of the load distribution
  • to control the inflation & deflation of the suspension cushions
  • with vertical or horizontal mounting on the bogie or on the car-body.
  • with enhanced corrosion (600 hours salt-spray).
  • Optional mounting of a check valve on air supply.
The differential valves ensures the level of the vehicle in the event of major leak in an air-spring.

It connects the two suspension cushions and ensures the angle of the vehicle in the event of a leak. If a pressure difference is detected between the right and left cushions, the valve will ensure that the pressure difference is no more than a certain amount of bars (standard: 1,25 bars). Can be modified upon request.
 
The safety valve (or discharge valve) ensures fast draining of air-cushions in case of failure for the case where the distance from car-body to bogie exceeds the determined threshold.

Connected to the bogie frame, the safety valve consists of two chambers isolated by a valve. The valve is returned by a spring.

​Advantages of FBO valves: Complies with EN 45545; Low temperature option (-40°C); No preparation required; Quick setting.
 
The DN15 filter is designed to meet the demands of pneumatic circuits for pollution:
  •  for mounting on the compressed air line for the pneumatic spring suspension
  • to avoid significant pressure losses
  • for periodic cleaning without dismantling the piping.