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.
Prince Philip's last name when he married Elizabeth in 1947 was Mountbatten, but the problem was being Greek he wasn't considered British enough to have the Royal household adopt his name. It was on the advice of Winston Churchill that they kept the name Windsor, much to Philip's irritation.