Taylor-Wharton EF-1000 - Manual (Page 18)

BT-472 Rev. B
18
Withdrawing Gas
To withdraw gas from the Express Fill system, connect a suitable line regulator to the gas withdrawal connection (CN-
4). Connect the outlet of the regulator to the application. Follow these steps:
1.
Open the pressure building valve (V-4). Monitor the pressure gauge (PI-1). When the pressure exceeds the
desired delivery pressure, continue.
2.
Open the gas withdrawal valve (V-3).
3.
Adjust the line regulator to desired delivery pressure.
Withdrawing Liquid
Attach a transfer hose from the receiver vessel to the Express Fill 1000 or 700 liquid connection (CN-1) and open the
adjacent liquid valve (V-1). The pressure in the container will drive liquid product out through the valve as long as the
container pressure exceeds that of the receiver.
Changing Gas Service
The Express Fill system may be used for argon, oxygen, or nitrogen service. Follow these steps to properly change gas
service:
1.
Safely empty all liquid from the container.
2.
Open the pressure building valve (V-4) and the vent valve (V-2) to vaporize any residual liquid that may
remain in the bottom of the vessel. It may require an hour or longer to vaporize all the residual liquid.
3.
To ensure purity, it is recommended that the Express Fill system be evacuated with a suitable vacuum
pump. The ultimate vacuum reading should be at least 20 inches of mercury.
4.
Replace the fittings for the vent, liquid, and use connections with the appropriate fittings shown in the chart
below. Use Teflon tape or another suitable thread sealant when threading the fittings into the connections.
5.
Remove any decals identifying the previous gas service. Attach new gas service identification decals.
Gas Service Valve Description TW Part Number
Use Fitting CGA 540 x 1/2” NPT 7114-0159
Vent Fitting CGA 440 x 3/8” NPT 6514-8992
Liquid & Top Fill Fitting CGA 440 x 1/2” NPT 6514-8990 (2 required)
Oxygen
NA Oxygen Service Decal GL55-9C52
Use Fitting CGA 580 x 1/2” NPT 7114-0160
Vent Fitting CGA 295 x 3/8” NPT 7355-4712
Liquid & Top Fill Fitting CGA 295 x 1/2” NPT 7355-4698 (2 required)
Nitrogen
NA Nitrogen Service Decal GL55-9C51
Use Fitting CGA 580 x ½” NPT 7114-0160
Vent Fitting CGA 295 x 3/8” NPT 7355-4712
Liquid & Top Fill Fitting CGA 295 x 1/2” NPT 7355-4698 (2 required)
Argon
NA Argon Service Decal GL55-9C53