Page 386 - Praxair - Specialty Gases and Equipment Reference Guide

Accessories

Gas Heaters

Model SG6500 Carbon Dioxide and Nitrous Oxide Gas Heaters
The Model SG6500 gas heater is designed for use with either carbon dioxide or nitrous oxide
to prevent regulator freeze-up under high flow conditions. Installed between the cylinder valve
and a suitable regulator, the heater warms the gas stream allowing for flow rates up to
160 scfh without regulator freeze-up.
o
The gas heater is thermostatically controlled at 160 F to prevent overheating of the gas.
The heating element, encased in a polymeric body, efficiently radiates heat to the gas stream.
The outer jacket of the heater provides insulation to allow the operator to install or remove
the heater under warm conditions. The Model SG6500 Heater may be used in conjunction
with any regulator that is suitable for carbon dioxide or nitrous oxide use. SG6500 Heater

Specifications Materials
n Maximum Operating Pressure n Thermostat Setting n Inlet and Outlet Connections
3000 psig 160 F ±5 F Brass
o
o
n Voltage n Power Cord Length n Other Metal Parts Exposed to Gas
110 VAC 5-1/2 feet Brass
n Power n Dimensions (approximate) n Heater Block
120 watts, 1 amp 6-1/2" x 2-1/2" x 1-3/4" Epoxy, Polymer
n Maximum Flow Rate n Approximate Weight
160 scfh (CO 2 ) 2 lb
Ordering Information
Part Number Gas Service Inlet Connection Outlet Connection
PRSSG6500-320 Carbon Dioxide CGA 320 CGA 320 Adapter*
PRSSG6500-326 Nitrous Oxide CGA 326 CGA 326 Adapter*
* Suitable for direct mounting of a pressure regulator with specified CGA.

Model SG7500 Electric High Flow Heaters for Compressed Gases Section E – Gas Handling Equipment
Model SG7500 electric heater is designed for use with nonflammable liquefied
compressed gases to prevent regulator freeze-up and to assure uniform temperature
under high flow conditions. Connected between the cylinder valve and a suitable
regulator, the heater warms the gas stream allowing for flow rates up to 1000 scfh*
(CO 2 ) without regulator freeze-up.
The heater is designed with a dry heat exchange medium made of aluminum
and continuous high pressure stainless steel tubing with no internal joints.

Standard Features Specifications SG7500
n Heavily insulated cabinet remains “cool”. n Maximum Operating Pressure Heater
n Heater can be left on indefinitely, even 3600 psig
under no-flow conditions, without n Maximum Flow Rate
resultant damage. 1000 scfh for CO 2 (at initial gas
n Flow can be in either direction without temperature 0 F and 170 F outlet)
o
o
loss of efficiency. n Capacities for other gases will vary,
n Mounting bracket provides for depending of their specific heat.
convenient, wall mounted installation. n Voltage: 120 VAC
n C.S.A. approved n Power: 1000 watts, 8.3 amps
o
n Thermostat Setting: 170 F ±5 F
o
n Power Cord: 6 ft., 3-wire UL/CSA listed Materials
Optional Featues n Inlet and Outlet Connections: 1/4" MPT n Inlet and Outlet Connections
n Manifold adapter block provides means n Tubing: 5/16" O.D. x .049 wall x 7 in long Type 316 Stainless Steel
to install heater between gas cylinder n Dimensions: n Tubing
and regulator with CGA connections. 11" H x 5-1/2" W x 4-1/4" D Type 304 Stainless Steel
n Mounting Holes: 3 inch O/C n Cabinet
n Approximate Weight: 11 lb Metal enclosure
Ordering Information Optional Equipment
Part Number Description Part Number Manifold Block
PRSSG7500 SG7500 Electric heater PRS14-SS-320 CGA 320 x CGA 320 adapter
PRS14-SS-326 CGA 326 x CGA 326 adapter
PRS14-SS-580 CGA 580 x CGA 580 adapter

1-877-PRAXAIR www.praxairdirect.com E•385