Materials:
• Machined components are manufactured using solid steel bar stock.
• Stainless steel balls, retaining rings, and springs maximize corrosion resistance and extend service life.
• Steel componentry is plated using ROHS Compliant Trivalent Chrome.
• Steel coupler sleeves are hardened to resist deformation and maximize service life.
• Steel nipples are hardened to provide heavy duty performance and resist brinneling.
Invinity to build 20MWh flow battery in UK
A surprising comment for someone who (I think you´ve said in the past) worked in the industry. National Grid have a variety of reserve service schemes...