INSTRUCTIONS for
F14-237
April, 2007
R-50 SERIES
CONTROLLED FLOW CYLINDER REGULATORS
Be sure this information reaches the operator.
You can get extra copies through your supplier.
CGA-032 (FORMERLY "B"I.G.)—5/8—18RH female.
Each regulator is equipped with 1.50" (38 mm) dia., 0 - 4000 psi (0 - 276 bars) cylinder pressure gauge.
Dimensions Weight:
Overall length ................................4.25" to 4.75" (108 mm to 120 mm)
Body Diameter ....................................................................... 1.25" (32 mm)
Weight ...................................................................................1.00 lb. (0.45 kg)
Accessory: CO
2
Heater, P/N 950578 - Recommended if CO
2
regulator is expected to operate at high duty cycles. The heater
connects between regulator and cylinder permitting the CO
2
to flow without "freezing up" the regulator.
Requires standard electrical extension cord of appropriate length with 3-prong connections.
The INSTRUCTIONS contained on this sheet are intended specifically for operators who know the general
principles of operation and safe practices to be followed in operating this type of equipment. If you are not
sure that you understand these principles fully, we urge you to read our booklet "Precautions and Safe Prac-
tices for Arc Welding, Cutting and Gouging" Form 52-529, in addition to these instructions. Do NOT permit
untrained persons to install, operate, or maintain this equipment. Do NOT attempt to install or operate this
equipment until you have read and fully understand these instructions. If you do not fully understand these
instructions, contact your supplier for further information.
The regulators covered by these Instructions are listed by Underwriter's Laboratories only when using parts
manufactured by The ESAB Group to the specifications on file with Underwriter's Laboratories, Inc., and the
gas service for which it is designed and listed. The use of other parts voids the manufacturer's warranty.
Do not clamp regulator cap in a vise or grip it with a pair of pliers. Distortion of cap can jam the internal parts
and cause excessively high delivery pressure as well as weaken the threaded joint to the regulator body. This
may cause cap to fly off and possibly injure personnel in area.
The regulators are not adjustable. They are factory set to deliver a fixed flow rate as specified in the table
above. Do not attempt to make any adjustments.
CAUTION
Regulator
Model
Part
Number
Gas
Service
Preset Nom.
Flow Rate
Connections (CGA)
Inlet
Outlet•
R-50-TIG-580
18361
Argon
25 cfh (0.71 m
3
/hr.)
580
032
R-50-MIG-580
17773
Argon Mix
35 cfh (0.99 m
3
/hr.)
580
032
R-50-MIG-320
17774
CO
2
35 cfh (0.99 m
3
/hr.)
320
032
