Hello Duncan,
Following your lead on Vevor hand pumps, I have purchased one for the princely sum of £10. The tank is aluminium sheet. The sample I have works well and even the gauge agrees with my calibrated pressure gauge.
It doesn’t include an isolation valve or pressure relief valve for the vessel being tested. But one hardly expects that for a tenner.
I would think it would make an excellent tender hand pump for the larger gauge loco.
Andrew.