Ametek Model T-811 Pneumatic Vacuum Calibration Pump
The Model T-811 Pneumatic Pressure Tester is a very economical, lightweight, pneumatic hand pump that can generate test vacuum pressures up to 25" Hg. It may be easily operated in the field and its compact size allows it to be easily stored in a briefcase. The pump is connected to a 0.125-inch OP plastic tube on one end and a reference gauge and instrument under test on the other end. The tester features a fine-tuning vernier adjustment with a resolution within 1-inch H
2O. A thumbscrew bleed valve provides for very rapid or gradual pressure venting.