With the lever valve almost all the way open, the air mattress pump is creating a negative 76 Pa suction on the PSA tape on the plywood, about the same pressure (75 Pa) used in testing air barrier materials.
Photo: Peter Yost
With the lever valve almost all the way open, the air mattress pump is creating a negative 76 Pa suction on the PSA tape on the plywood, about the same pressure (75 Pa) used in testing air barrier materials.
Photo: Peter Yost