Leider kann ich den von Dir verlinkten Beitrag nicht lesen, weil die Vorbedingung dafür ist, daß man sich bei facebook anmeldet. Und ehe ich mich da anmelde(n kann), verzichte ich lieber.
Eigentlich aber schade.

MGF Hydragas re-gassing nipples now available. Prescision CNC manufactured in stainless steel to my design incorporating an internal viton O ring to seal the nipple into the adapter and a stainless steel domed washer with a neoprene seal bonded to the underside..The 'Schrader' valve is rated at 500psi so will cope with the 280 psi recommended nitrogen pressure easily.
These nipples are a DIY installation and do not require the time consuming and costly removal and replacement of the hydragas 'bottles' or spheres or welding (which can damage the internal rubber pocket) therefore allowing the owner to fit and have the nitrogen replenished at a local HVAC specialist that uses nitrogen to test for leaks in HVAC systems. This is a common test and is used by HVAC engineers everywhere..Once fitted the sphere can be re-pumped up temporarily with a normal air/tyre pump with sufficient pressure that will allow the car to be driven to a local HVAC centre or allow a site visit. It also allows the sphere to be tested to check if the diaphragm is ruptured. Simply fit and test with air and attach a tyre gauge to see if the pressure starts to drop. If it does then the sphere can be removed and a replacement also tested before fitting. The nipple can be removed by simply unscrewing and re-used on another sphere.Once fitted and recharged the cost saving over removing the 'bottles'/spheres and refitting can be as much as £350 plus any postage involved! The cost of these are £75 plus vat = £90 Royal Mail postage is £2.50 for UK purchases and approx £4-£8 .00 for other countries depending on location. I have made 25 car sets so it is a limited production run once gone it will be 3-4 weeks before we can remake more. If you have a MGF and want to restore the ride comfort then try these.