Hypro RM40 Control Unit/Regulator. This control unit, for mounting on pump model 9910-D503, is capable of handling flow rates up to 24 gpm (90.8 lpm) and pressures up to 580 psi (40 bar). It includes a pressure gauge, one adjustable high pressure relief valve, one complete bypass knob, two 1/2.
Prince Philip speaks English,'German and French. He attended an American school in France so his education was in English. Despite being the prince of Greece and Denmark he doesn't speak Greek or Danish. He was born in Greece, but didn't grow up there. The Languages of the Royals.
As an English speaker, I lived in Belgium on the Flemish/French language border for 5 years ! Belgium has 3 official languages : Flemish (Vlaamse, a purer form of Dutch, close to Afrikaans in South Africa), French (Walloon) and German (around 4% in the east). Near the border with Luxemburg, people also speak Luxemburgoise. The language borders are complex with protected French speaking villages inside the Flemish border etc.