Filling, sealing and testing thermostatic valves: Class 08 locomotives (TM-DER-002)

The bellows of thermostatic valves from Glass 08 locomotives may corrode and puncture. Although new bellows are obtainable, complete units have been in short supply. B.R.E.L. proposed, therefore, to replace the bellows only and a process for filling these with a suitable actuating fluid, sealing and testing the complete valve...