For sale, one Vivid Sentinel vacuum valve v4.
The valve has the Subal-sized fitting but can be transferred to other housings with, if necessary, a different housing adaptor.
The valve comes with the pump, spare battery and o-rings
Full details of the system and how it works are at http://www.vividhousings.com.
As you may have seen in previous posts I made, I'm a huge fan of the Vivid. I've been using one for a good few years and can heartily recommend them both as a company and as something I'd recommend anyone adds to their housing. They give an added level of leak protection/prevention and a definite sense of reassurance! And customer service with Vivid is really excellent.
The V4 module has temperature compensation, overnight switch-off ability and low battery detector.
The eagle-eyed will spot on the attached photo that the pump says V3 on it. The electronics of the valve are the V4 edition as I upgraded the electronic chip from the V3 to V4 - easy to do. The buyer can have both the V3 and V4 electronics. I saw no point in replacing the V3 sticker on the pump with the V4 one. The pump is a very simple Vacuvin-style hand pump!
PM me for more details.
Price £125 plus shipping and any PayPal fees