INGERSOLL RAND COMPANY LTD
P.O. BOX 151 ONE ARO CENTER BRYAN, OHIO 43506-0151
(800) 276-4658 FAX (800) 266-7016 © 2008 CCN 99443798

OPERATOR’S MANUAL 65178X-XXX-B

RELEASED: 2-12-93
REVISED: 1-11-08
(REV. F)

HIGH PRESSURE

MATERIAL REGULATOR

READ THIS MANUAL CAREFULLY BEFORE INSTALLING,

OPERATING OR SERVICING THIS EQUIPMENT.

It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
INCLUDING: SERVICE KITS, TROUBLESHOOTING, PARTS LIST,
DISASSEMBLY & REASSEMBLY.

SERVICE KITS

Use only genuine ARO® replacement parts to assure com-
patible pressure rating and longest service life.
Order 637219-XXX-B rebuild kit (see chart below) for gen-
eral repair of the regulator. This includes a diaphragm kit
and a valve kit.
Fluid diaphragm kit 61962-1 can be ordered separately
(see page 4).
Valve kit can be ordered separately (see page 4).
Ball Size
A - 0.1875”
B - 0.250”
C - 0.500”
Ball & Seat Material
1 - Tungsten Carbide
Rebuild Kit Selection
Example: Model # 651780-A3B-B
Rebuild Kit # 637219-0A1-B
Type
0 - Downstream
1 - Back Pressure

MODEL DESCRIPTION CHART

Figure 1
637219 - X X 1 - B

REBUILD KIT DESCRIPTION CHART

SPECIFICATIONS

Model Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65178X-XXX-BType . . . . . . . . 651780-XXX-B . . . . . . . . . . . . . Downstream 651781-XXX-B . . . . . . . . . . . . . Back PressureMaterial Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . see model chartMaterial Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . see model chartDimensional Data . . . . . . . . . . . . . . . . . . . . . . . . see  gure 10
PERFORMANCE DATA
Regulated Pressure Range . . . . . . . . . . . . . . . see model chartMaximum Regulated Pressure . . . . . . . . . . . see model chartMaximum Inlet Pressure 651780-XXA-B . . . . . . . . . . . . . . . . . . . . . . . . . . 3000 p.s.i. (206.9 bar) 651780-XXB-B, -XXC-B, -XXR-B . . . . . . . . . . . 6000 p.s.i. (413.8 bar) 651781-XXX-B . . . . . . . . . . . . . . . . . . . . . . . . . . 3000 p.s.i. (206.9 bar)Maximum Temperature Limits . . . . . . . . 0° to 200° F (-18° to 93° C)
Regulated / Maximum Pressure Range
A - 400 - 1250 p.s.i. (27.6 - 86.2 bar)
B - 100 - 3000 p.s.i. (6.9 - 206.9 bar) Back Pressure models
- 1000 - 3000 p.s.i. (69 - 206.9 bar) -AXB and -BXB
Downstream models
- 750 - 2500 p.s.i. (51.7 - 172.4 bar) -CXB Downstream models
C - 2000 - 5000 p.s.i. (137.9 - 344.8 bar)
R - 400 - 5000 p.s.i. (27.6 - 344.8 bar) -AXR and -BXR models
- 750 - 5000 p.s.i. (51.7 - 344.8 bar) -CXR models
Body Material, (Seat Material)
1 - Carbon Steel (Tungsten Carbide)
3 - 316 Stainless Steel (Tungsten Carbide)
Port Size, (Ball Size)
A - 3/8 - 18 N.P.T.F. (0.1875”)
B - 3/8 - 18 N.P.T.F. (0.2500”)
C - 3/4 - 14 N.P.T.F. (0.500”)
Type
0 - Downstream
1 - Back Pressure
65178 X - X X X - B