APCO DAT DOUBLE ACTING THROTTLING DEVICE
Instruction
D12029
June 2014
Page 1: ...APCO DAT DOUBLE ACTING THROTTLING DEVICE Instruction D12029 June 2014 ...
Page 2: ...able protection for any potential pipeline material in the valve Inspection Your APCO DAT Double Acting Throttling Device has been packaged to provide protection during shipment however it can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Recommended spare parts are listed on the assembly drawing These parts...
Page 3: ... The DAT is used to regulate adjust the air exhaust on pump start up to attain a smooth pressure transition between the exhausting air and the operating pressure During pump shut off the device will automatically allow a large amount of air in during vacuum to protect against pipe collapse NOTE The DAT is not a stand alone device and cannot be installed directly to the pipeline The DAT must be ins...
Page 4: ...ll turns Start pump Listen and observe the Air Vacuum Valve closing when water column reaches the valve If the valve gently closes and no surge is apparent lock the position setting in by turning the lock nut 6 against the cover 2 If there is a thunk when valve is closing turn the adjustable stem 3 one full turn clockwise to farther close the devise and restrict the amount of air evacuating Depend...
