ASDI
Operations and Maintenance – TX Models – P/N: 54629
7-40
TORREXX OPTIONS
7
Economy Operation
The Economy Option minimizes the electric power required to meet your vapor demand by shutting off flow at the
outlet of the vaporizer when the natural vaporization rate of the storage tank can supply enough vapor to meet the
demand. The Economy Valve operates by reacting to the pressure in the storage tank. When tank pressure falls
below 22 PSIG (1.5 bar), the valve is fully open allowing the vaporizer to supply vapor to the load. When the tank
pressure rises above 82 PSIG (5.7 bar), the valve is fully closed allowing the storage tank to provide natural
vaporization to the load. The pressure sensing valve is a mechanical device that operates independent of the
electrical controls.
The Economy Option will
NOT
function if a pump is used. The liquid piping is limited to 10 ft (3 m) of length from
the tank to the Inlet Solenoid.
The pressure set point of the Economy Valve is not adjustable.
The Economy Valve is a field installed component and shall be installed directly at the outlet of the vaporizer prior
to the first-stage regulator. Use field installation kit, ASDI P/N 41051.
Ensure the Economy Valve is correctly installed by verifying the flow direction indicator on the rating plate.
Figure 17 – TORREXX Economy Valve Installation
Note: Economy Option cannot be used on an installation that requires a pump.
NOTES
1.
LIQUID PIPING LOSSES BETWEEN THE VAPORIZER AND THE
TANK MUST NOT EXCEED THE HYDROSTATIC HEAD.
2.
INSTALL VAPORIZER 1
ST
STAGE REGULATOR UPSTREAM OF
VAPOR BYPASS LINE CONNECTION TO MAIN VAPOR LINE.
3.
SET 1
ST
STAGE VAPORIZER REULATOR 2-4 PSIG (0.1-0.3 BAR)
HIGHER THAN TANK VAPOR PRESSURE REGULATOR SET-
POINT.
4.
NO CHECK VALVES IN LIQUID LINE. LIQUID MUST BE ABLE TO
FLOW IN BOTH DIRECTIONS.
*BY OTHERS
STORAGE TANK
ISOLATION
VALVE*
TANK VAPOR
PRESSURE
REGULATOR*
VAPOR BY-PASS LINE
OUTLET ISOLATION VALVE*
VAPORIZER
REGULATOR*
LIQUID
ISOLATION VALVE”
SEAL OFF REQUIRED*
ELECTRIC SERVICE
REQUIRED*
(VAPOR)
TO LOAD
STRAINER WITH
MAGNET FOR IRON
PARTICLE PICK-UP*
ISOLATION VALVE
W/HYDROSTATIC
RELIEF*
PRESSURE GAUGE*
ASDI ECONOMY VALVE
SENSES UPSTREAM
PRESSURE
ISOLATION
VALVE*
Содержание TORREXX TX240
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