Taylor-Wharton EF-450 - Manual (Page 17)

Withdrawing Liquid
Attach a transfer hose from the receiver vessel to the Express Fill 450 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 450 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 450 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 3/8” NPT 7114-0163
Liquid & Vent Fitting CGA 440 x 3/8” NPT 6514-8992 (2 required)
Top Fill CGA 440 x 1/2” NPT 6514-8990
Oxygen
NA Oxygen Service Decal GL55-9C52
Use Fitting CGA 580 x 3/8” NPT 7114-0164
Liquid & Vent Fitting CGA 295 x 3/8” NPT 7355-4712 (2 required)
Top Fill CGA 295 x 1/2” NPT 7355-4698
Nitrogen
NA Nitrogen Service Decal GL55-9C51
Use Fitting CGA 580 x 3/8” NPT 7114-0164
Liquid & Vent Fitting CGA 295 x 3/8” NPT 7355-4712 (2 required)
Top Fill CGA 295 x 1/2” NPT 7355-4698
Argon
NA Argon Service Decal GL55-9C53
17