My company delivered an outdoor water valve (the kind you connect your garden hose to). The guy called me the other day telling me that he thought the water now had less "force" coming out the end that it used to with his old valve. The valve has a 20cm long pipe end to connect to which is Ø22 mm. Because of this the pipe leading up to this point is also done with Ø22 mm. His suggestion was to increase this supply pipe but I'm not sure this will do any good. Rather the opposite... Any thoughts on whether this will help and if no, what should be done?