Forge Uprated Dump Valve Spring

Valve Spring color coding

Green  -    6-8 PSI

Yellow -    10-12 PSI

Blue    -    14-16 PSI

Red     -    18-20 PSI

Please Note:
The quoted spring pressure (Psi) relates to the un-assisted clamping force of the spring and should NOT be taken as an equivalent to boost pressure when determining suitability. Once a valve is fitted to a car it is subjected to various pressures that act upon the diaphragm or piston to aid its respective ability to seal or hold boost. An example of this, would be when using a FMCL007P valve on a 1.8T engine as found in the TT 225hp. The boost pressure on a "chipped" car can peak at 26psi. The recommended spring would be the Green or Yellow

For information regarding which spring is suitable for your application please contact us.