Product Description
Armstrong Adapter – Part No. 426742-011
Genuine Armstrong replacement adapter, Armstrong part number 426742-011, for Series 4380, 4280, 4030 pumps. Shown as item 40 on the Series 4380 drawing (parts list 6043.129 / 6043.130) – highlighted in the pictures above.
Specification: Bronze fitted; All iron; Combination stuffing box & adapter (items 40 & 50)
Fits these Armstrong pumps
- Series 4380 (vertical in-line) – pump sizes 4 × 4 × 11½, 5 × 5 × 11½, 6 × 6 × 11½, 8 × 8 × 11½
- Designation: 'M'
- Motor frames: 254JM, 256JM
- Pressure rating: 125#
- Drawing item: 40
- Series 4280 (close coupled end suction) – pump sizes 4 × 3 × 11½, 5 × 4 × 11½, 6 × 5 × 11½, 8 × 6 × 11½
- Designation: 'M'
- Motor frames: 254JM, 256JM
- Construction: Bronze fitted (125#), All iron
- Drawing item: 40
- Series 4030 (base mounted end suction) – pump sizes 4 × 3 × 11½, 5 × 4 × 11½, 6 × 5 × 11½, 8 × 6 × 11½
- Designation: 'M'
- Motor frames: 284T, 286T, 254T, 256T, 324T, 326T, 364T, 365T
- Construction: Bronze fitted (125#), All iron (125#)
- Drawing item: 40
Other parts for this pump
Rebuilding a Series 4380 4 × 4 × 11½? These parts are often replaced at the same time:
Showing 24 of 30 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 426742-011
Part Type Adapter / Stuffing Box / Bracket
Fits Series 4380 4 x 4 x 11-1/2, 5 x 5 x 11-1/2, 6 x 6 x 11-1/2, 8 x 8 x 11-1/2
Fits Series 4280 4 x 3 x 11-1/2, 5 x 4 x 11-1/2, 6 x 5 x 11-1/2, 8 x 6 x 11-1/2
Fits Series 4030 4 x 3 x 11-1/2, 5 x 4 x 11-1/2, 6 x 5 x 11-1/2, 8 x 6 x 11-1/2
Drawing Item 4030: item 40; 4280: item 40; 4380: item 40
Specification Bronze fitted; All iron; Combination stuffing box & adapter (items 40 & 50)
Shipping cost: Inquire
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