Product Description
Armstrong Casing – Part No. 426131-011
Genuine Armstrong replacement casing, Armstrong part number 426131-011, for Series 4380, 4300 pumps. Shown as item 100 on the Series 4380 drawing (parts list 6043.129 / 6043.130) – highlighted in the pictures above.
- Casing only – the case wear ring is sold separately. A new casing must be ordered with a new wear ring.
- Casing only – the case wear ring is sold separately.
Specification: Bronze fitted, 125#; All iron, 125#; 125# cast iron
Fits these Armstrong pumps
- Series 4380 (vertical in-line) – pump sizes 8 × 8 × 11½
- Pressure rating: 125#
- Drawing item: 100
- Series 4300 (vertical in-line) – pump sizes 8 × 8 × 11½
- Construction: Bronze fitted (125#), All iron (125#)
- Drawing item: 100
Other parts for this pump
Rebuilding a Series 4380 8 × 8 × 11½? These parts are often replaced at the same time:
| Item | Part | Armstrong part no. |
|---|---|---|
| 39 | Water slinger | 419315-000 |
| 40 | Stuffing box / adapter | 426742-011 |
| 40 | Stuffing box / adapter | 426742-031 |
| 40 | Stuffing box / adapter | 426744-011 |
| 40 | Stuffing box / adapter | 426744-031 |
| 43 | Motor washer | 927121-100 |
| 44 | Motor capscrew | 911125-110 |
| 44 | Motor capscrew | 911129-110 |
| 57 | Male connector | 939001-114 |
| 59 | Flush line tubing | 997531-004 |
| 62 | Mechanical seal kit | 975000-984 |
| 62 | Mechanical seal kit | 9975001-833 |
| 62 | Mechanical seal kit | 9975001-633 |
| 62 | Mechanical seal kit | 9975001-837 |
| 62 | Mechanical seal kit | 9975001-838 |
| 70 | Shaft sleeve | 425869-003 |
| 70 | Shaft sleeve | 425869-021 |
| 71 | Shaft sleeve spacer | 425868-004 |
| 80 | Impeller | 426289-041 |
| 83 | Impeller washer | 425742-003 |
| 84 | Impeller lockwasher | 927213-400 |
| 86 | Impeller capscrew | 911900-119 |
| 90 | Case wear ring | 426412-421 |
| 100 | Casing | 426132-031 |
Showing 24 of 29 parts – see the full list in the parts finder.
Not sure this is the right part?
Use our Armstrong Pump Parts Finder: choose Series 4380, your pump size and motor to see every part on the drawing. Or send us your pump’s nameplate details – call (416) 236-2338 or email sales@bramhambros.com. Bramham Bros is an authorized Armstrong dealer.
Product Videos
Custom Field
Brand Armstrong
Armstrong Part Number 426131-011
Part Type Casing
Fits Series 4380 8 x 8 x 11-1/2
Fits Series 4300 8 x 8 x 11-1/2
Drawing Item 4300: item 100; 4380: item 100
Specification Bronze fitted, 125#; All iron, 125#; 125# cast iron
Shipping cost: Inquire
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