Radiator cap markings

fredinireland Full Member Posts: 25	Radiator cap markings Jul 22, 2020 18:40:03 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by fredinireland on Jul 22, 2020 18:40:03 GMT Can anyone please tell me what pressure rating the Nanni T4.390 rad cap has? Mine is split on the brass disc. The markings are TH21 06 1000 which means nothing to me. Cheers