Product Description
Armstrong Casing – Part No. 427036-031
Genuine Armstrong replacement casing, Armstrong part number 427036-031, 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: Ductile iron, 250#; Ductile bronze fitted, 250#; 250# ductile iron
Fits these Armstrong pumps
- Series 4380 (vertical in-line) – pump sizes 1½ × 1½ × 6
- Pressure rating: 250#
- Drawing item: 100
- Series 4300 (vertical in-line) – pump sizes 1½ × 1½ × 6
- Construction: Ductile iron (250#), Ductile bronze fitted (250#)
- Drawing item: 100
Other parts for this pump
Rebuilding a Series 4380 1½ × 1½ × 6? These parts are often replaced at the same time:
| Item | Part | Armstrong part no. |
|---|---|---|
| 15 | Set screw | 916517-005 |
| 16 | Set screw | 916519-104 |
| 17 | Set screw | 916517-205 |
| 21 | Shaft extension | 426992-071 |
| 36 | Shaft key | 974515-400 |
| 39 | Water slinger | 406622-000 |
| 40 | Stuffing box / adapter | 426746-011 |
| 40 | Stuffing box / adapter | 426746-031 |
| 40 | Stuffing box / adapter | 426747-011 |
| 40 | Stuffing box / adapter | 426747-031 |
| 43 | Motor washer | 927113-100 |
| 44 | Motor capscrew | 911121-108 |
| 44 | Motor capscrew | 911125-108 |
| 57 | Male connector | 939001-114 |
| 59 | Flush line tubing | 997531-004 |
| 62 | Mechanical seal kit | 975000-982 |
| 62 | Mechanical seal kit | 9975001-813 |
| 62 | Mechanical seal kit | 9975001-613 |
| 62 | Mechanical seal kit | 9975001-817 |
| 62 | Mechanical seal kit | 9975001-818 |
| 70 | Shaft sleeve | 425869-001 |
| 71 | Shaft sleeve spacer | 425868-005 |
| 80 | Impeller | 427099-041 |
| 83 | Impeller washer | 425742-001 |
Showing 24 of 31 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 427036-031
Part Type Casing
Fits Series 4380 1-1/2 x 1-1/2 x 6
Fits Series 4300 1-1/2 x 1-1/2 x 6
Drawing Item 4300: item 100; 4380: item 100
Specification Ductile iron, 250#; Ductile bronze fitted, 250#; 250# ductile iron
Shipping cost: Inquire
Parts Finder canadianpumpshop.com/armstrong-parts-finder/
