Taylor-Wharton EF-1000 - Manual (Page 6)

BT-472 Rev. B
6
INTRODUCTION
This manual provides information for the operation and maintenance of Taylor-Wharton's line of Express Fill 700 and
1000 cryogenic gas supply systems. These products store cryogenic liquid and dispense it as a warm pressurized gas.
The Express Fill systems are designed for applications requiring nitrogen, argon, or oxygen gas. These products are
ideal for on-site filling with Taylor-Wharton’s Express cryogenic liquid delivery vehicle.
Additional product specifications, flow diagram, views, and important dimensions are shown on the general arrangement
drawing provided in the appendix of this manual.
System Description
The Express Fill 700 and 1000 consists of a cryogenic liquid vessel, piping, internal vaporizer, and an internal pressure
builder.
The system vessels have an approximate gross capacity between 700 and 1,000 liters. The vessel consists of a pressure
vessel suspended inside a jacket. The space between the pressure vessel and the jacket is evacuated and insulated with a
micro-fiberglass / aluminum foil radiation shield. Both the inner pressure vessel and vacuum jacket are constructed of
type 304 stainless steel. All models are designed and constructed in accordance with ASME Section VIII.
Piping circuits allow the vessel to vent, fill, pressurize, and provide pressurized gas. Piping is type-304 stainless steel.
Valves are brass. Fittings are machined from forged brass and type-316 stainless steel.
Instrumentation consists of a pressure gauge and a differential pressure gauge. The pressure gauge allows the vessel
pressure to be monitored. Accurate measurement of the vessel contents is provided by the differential pressure gauge.
The Express Fill system automatically maintains pressure by vaporizing cryogenic liquid in a controlled fashion. All
energy for building pressure and vaporizing liquid is provided by heat from ambient air. The vaporizer and pressure
builder coils are attached to the inside surface of the outer jacket.