Suspension Systems


Rail Suspension Systems

Rail suspension systems are a notoriously harsh environment. Our innovative valve technology, boasting exceptional reliability and safety credentials, is resilient to extreme temperatures and designed for long life and ease of interchange.


We can offer a wide range of products for secondary air suspensions systems, with all products being rail certified. These systems use air bellows between the bogie and car body to control the height ride of the train giving passengers a more comfortable journey. Using air suspension also gives the ability to provide an accurate load/weight signal, which can be used to optimise the acceleration and braking of a multiple train set

Mechanical Levelling Valve VRSS1000 Series
  • Robust design
  • 1/4", 3/8" ISO G, NPT, Rc & M12 ported versions
  • Excellent repeatability over life
  • Life cycles: >2 million
  • Working Temperature: -40 to +80ºC
  • Operating Pressure: 0 to 8.5 bar
  • Shock & Vibration EN 61373: 1999, Category 2
  • Salt Spray testing 1000h, ISO 9227
  • Fire & Smoke Compliant to EN45545
  • IP54 Rated
  • Universal mounting orientation (right/left hand)
  • Compliant to EN14817 (Railway applications, suspension components)
Double Check Valve (Compensation valve) VRSS2000 Series
  • Robust design
  • 1/2" ISO G, NPT & Rc ported versions
  • Working Temperature -40 to +50ºC
  • Operating Pressure 0 to 8.5 bar
  • Flow rate 300 L/min @ 4bar
  • Shock & Vibration EN 61373: 1999,
    Category 2
  • Salt Spray testing 1000h, ISO 9227
  • Fire & Smoke Compliant to EN45545
  • IP54 Rated
  • Additional ports for test points and pressure sensor
  • Compliant to EN14817 (Railway applications, suspension components)
Average Load Valve VRSS300 Series
  • Robust design
  • 1/4 G, Rc, NPT and interface ported
  • IP65 Rated
  • Working Temperature -25 to +60ºC
  • Operating Pressure 1 to 10 bar
  • Shock & vibration IEC/EN 61373: 1999 Category 2
  • Salt spray testing 1000h, ISO 9227
  • Compliant to EN14817 (Railway applications, suspension components)
Over Height Valve VRSS4000 Series
  • Robust design
  • 1/4, ISO G, NPT and Rc Ported
  • IP65 Rated
  • Working Temperature -40 to +50ºC
  • Operating Pressure 0 to 10 bar
  • Shock & vibration EN61373: 1999 Category 1, Class A & B
  • Fire & Smoke Compliant to EN45545
  • Salt spray testing 1000h, ISO 9227
LVP50 Proportional Pressure Control Valve
  • Closed-loop air piloted proportional pressure control valve
  • Excellent performance characteristics
  • Fast response time
  • Shock & vibration EN61373 Category 1, Class A & B
  • Fire & Smoke Compliant to EN45545
  • 1000 hrs salt spray compliant
  • Adjustable gain and pressure range
  • Rail EMC compliant
  • Low power consumption
  • Direct ported or interface option

Rail Enquiry? Contact the team today!

Please send your enquiry to our dedicated global rail team.