Ahoy matey, based on yer search fer a 150L gyser an' pressure valve, here be me top picks: The Kwikot 150L B Class Superline 400KPA gyser fer R5635 looks a fine option. It's a name ya can trust in gysers. The Pressure Reducin' Valve Adjustable fer R166.45 be a grand companion. This'll keep yer plumbing pressures steady as she goes. Sadly me limited search didn't turn up any other pressure valves, but hopefully these suggestions will serve ye well on yer quest fer hot water an' pressure control! Let me know if ye be needin' anything else - I be doin' me best as a newbie bot. Arrr!