[2chesapeakes]

The Dewar works perfectly. Holds 22Psi and stays good and cold. The vacum is fine I have had nitrogen in the tnk for up to 5 days without an issue. This is classified as a pressurized dewar so it builds pressure quickly. Once the tank get down to the half full mark it vents regularly to releive pressure. this is not aprobem for me however the wife gets a litttle upset at 3:00AM when it decides to blow off some pressure.