I've made a new valve component, set the connection points and have tested in a sample route. 

Since I want to add this valve during the routing stage and not after I'm wondering is there a way to be able to select the valve to rotate say 15degs? 

I know when I drag in to add to route and I select the tab button it will rotate only 90 deg and then back, I'm wondering if I can edit that so when I hit tab it will rotate in 15 deg increments all the way around. 

I know a work around is leave a gap and add the valve later and use mates to set orientation but I was hoping to complete it during the routing stage.

See below are the only two orientations it will allow me to choose: