I have a split system , all cold taps fed from the mains , my hot water has a tank in the loft and is vented. I am going to install a stuart turner dedicated pump . My question is do I just install it directly to the tap line by just splitting the pipe after the T or will I have to fit an essex valve above the T on the vent side . Picture shows the tank with the hot Td to the vent and down to the tap feed . The one I want to install my pump into . Thanks Guy.