Product Description
Armstrong Casing – Part No. 427081-031
Genuine Armstrong replacement casing, Armstrong part number 427081-031, for Series 4300 pumps. Shown as item 100 on the Series 4300 drawing (parts list 6043.132 / 6043.134 / 6043.136 / 6043.137) – 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.
Specification: Ductile iron, 250#; Ductile bronze fitted, 250#
Fits these Armstrong pumps
- Series 4300 (vertical in-line) – pump sizes 12 × 12 × 13
- Construction: Ductile iron (250#), Ductile bronze fitted (250#)
- Drawing item: 100
Other parts for this pump
Rebuilding a Series 4300 12 × 12 × 13? These parts are often replaced at the same time:
| Item | Part | Armstrong part no. |
|---|---|---|
| 21 | Pump shaft | 427894-000 |
| 36 | Impeller key | 428164-720 |
| 40 | Motor bracket | 425740-011 |
| 44 | Adapter bracket capscrew | 911825-120 |
| 50 | Stuffing box cover / adapter | 425737-031 |
| 51 | Seal chamber bushing | 425520-003 |
| 52 | Seal cover capscrew | 911125-416 |
| 53 | Seal cover capscrew washer | 427118-100 |
| 54 | Seal cover | 426486-001 |
| 58 | Male straight connector | 939001-314 |
| 59 | Tubing | 997153-004 |
| 62 | Outside mechanical seal | 975002-374 |
| 62 | Outside mechanical seal | 975000-957 |
| 62 | Outside mechanical seal | 975000-967 |
| 62 | Outside mechanical seal | 975000-953 |
| 62 | Outside mechanical seal | 975002-071 |
| 63 | Tee | 931101-101 |
| 64 | Bushing | 931123-150 |
| 67 | Nipple | 938003-101 |
| 68 | Air vent | 218644-000 |
| 80 | Impeller | 426995-031 |
| 90 | Upper & lower wear rings | 425550-092 |
| 92 | Wear ring set screw | 916521-508 |
| 94 | Stuffing box cover O-ring | 961131-455 |
Showing 24 of 60 parts – see the full list in the parts finder.
Not sure this is the right part?
Use our Armstrong Pump Parts Finder: choose Series 4300, 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 427081-031
Part Type Casing
Fits Series 4300 12 x 12 x 13
Drawing Item 4300: item 100
Specification Ductile iron, 250#; Ductile bronze fitted, 250#
Shipping cost: Inquire
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