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Master Catalog>>Section B - Pumps & Compressors>>Page B-12
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Smith Pumps - MC and GC Series Small Capacity Stationary Pumps
Both MC- and GC-series are designed for direct motor mount to 56C-frame electric motor. The GC-series pump can be used in conjunction with an internal combustion engine for portable transfer applications. Each MC- or GC-series pump utilizes the balanced 3-gear set unique to Smith pumps. The internal porting and superior construction enable these pumps to handle continuous duty service applications and pump against high differential pressure. The MC-series features an adjustable internal bypass valve. The GC-series features a permanently set internal bypass valve at 90 psid. Foot mount available.
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Part no. |
Description |
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MC-1 |
Pump only |
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MC-1M1 |
Pump w/1 HP motor, 115/230V 1Ø (EM1-3) |
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MC1-M5 |
Pump w/1½ HP motor, 115/230V 1Ø (EM-5) |
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GC-1 |
Pump only |
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GC-1M1 |
Pump w1 HP motor, 115/230V 1Ø (EM1-3) |
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GC-1M8 |
Pump & 3½ HP LPG engine (EM-8) |
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MC-100 |
Shaft-seal assemblies for MC-1 and GC-1. With Superseal. |
| Model | Motor Speed |
Average Delivery Rate, 3600 RPM |
Internal Bypass Relief Setting | Max. Differential Pressure | Inlet/Outlet Size | Motor | Pump Rotation | |
| 40 psid | 75 psid | |||||||
| MC-1 | 3600 RPM | Adjustable | 125 psi | 3/4" FNPT | 1 HP | CCW | ||
| 9 GPM | 8 GPM | |||||||
| GC-1 | 3600 RPM | 9 GPM | 8 GPM | 90 psi | 125 psi | 3/4" FNPT | 1 HP | CW |
MC and GC Series Parts Details
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Ref. no. |
Part no. |
Description |
Qty. |
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1 |
3/8-16Tx1-3/4L |
Cap screws for gear end cover |
8 |
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2 |
649-30 |
Valve cap |
1 |
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3 |
6227-12 |
O-ring |
1 |
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4 |
649-42 |
Valve adjusting screw with nut |
1 |
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5 |
649-2 649-2G |
Gear end cover for MC-1 Gear end cover for GC-1 |
1 1 |
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6 |
649-11 |
Main shaft bushing for cover |
1 |
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7 |
649-6 |
Idler gears with bushing |
2 |
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8 |
649-5 |
Drive gear |
1 |
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9 |
649-29S 649-29 |
Bypass valve seat, MC-1 Valve seat, GC-1 |
1 |
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10 |
6227-14 |
O-ring for valve seat |
1 |
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11 |
5008-100 |
Lock ring |
1 |
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12 |
649-41 |
Bypass valve |
1 |
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13 |
649-31 |
Bypass valve spring |
1 |
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14 |
649-29A** 649-29ACI** |
Optional- Bypass valve spring spacer |
1 |
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15 |
649-9 |
Idler gear shafts |
2 |
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16 |
649-1 |
Main housing |
1 |
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17 |
14PLUG |
1/4" Pipe plugs |
2 |
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18 |
649-40 |
Bypass valve spring retainer |
1 |
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19 |
649-3D** |
Option- Foot mount shaft end cover |
1 |
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20 |
649-3C |
Flanged shaft end cover mounts directly to fractional hp, NEMA C-face motor |
1 |
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21 |
3/8-16Tx1-1/4L |
Cap screws |
8 |
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22 |
FITTING1827** 83LB(MOD)** 83LB(A)** |
Optional leak detect port bleed fitting Optional - leak detection port check valves |
1 |
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23 |
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5/16" access port for |
