FUNCTIONAL COMPATIBILITY REVIEW
Compare component functions across Goulds 3196 and Durco Mark III without treating matching item numbers as direct part equivalence.
Have the nameplate, drawing, old part number or photos ready when you contact us.
Request Engineering Review →FUNCTION FINDER
Compare the component function first
This tool identifies the Goulds item and Durco POS used for the same component function. It does not claim the parts interchange.
CORRECTED FUNCTIONAL MATRIX
Goulds items and Durco POS codes
Matching numbers or similar functions do not prove direct cross-brand interchangeability.
| Function | Goulds Item | Durco POS | Direct Cross-Brand Interchange? | |
|---|---|---|---|---|
| Casing | 100 | 100 | Do not assume | |
| Impeller | 101 | 103 | No direct assumption | |
| Shaft | 122 | 105 | Verify platform-specific interfaces | |
| Shaft Sleeve / Hook Sleeve | 126 | 177 | Verify; different architecture | |
| Cover / Seal Chamber | 184 / 184M | 106 | No direct assumption | |
| Frame / Bearing Housing | 228 | 119 | Platform-specific | |
| Adapter | 108 | 108 | Same item number does not mean the same part | |
| Oil Seal / Isolator | 332A / 333A | 118 / 129 | Cross only by design and dimensions | |
| Sight Glass / Gauge | 319 | 200 | Cross by specification only | |
| Mechanical Seal | Application-specific | 153 | Cross by seal specification only |
ASME B73.1
ASME B73.1 interchangeability does not mean internal parts interchangeability
Separate the external installation envelope from internal wet-end and bought-out component fit.
Level 1 — External Installation Envelope
- Verify exact pump size and GA
- Confirm nozzles and centerline
- Review coupling, driver and baseplate
Level 2 — Internal Wet-End Components
- 3196 open-impeller architecture
- Mark III reverse-vane configuration may apply
- Do not assume shafts, covers or impellers cross
Bearings, seals and hardware may share industrial standards, but cross only by exact designation, specification and dimensions.
STX/STi, MTX/MTi, LTX/LTi and XLTX/XLTi are Goulds identifiers; Group I/II/III and 1K/2K/3K are Durco identifiers.
These nomenclature systems help identify platforms; they are not guaranteed component-interchange mappings.
COMPATIBILITY REVIEW
What dimensions and interfaces come first
Compare nozzles, centerline, feet, coupling and driver arrangement.
Review casing, impeller, cover/seal chamber and shaft interfaces together.
Confirm shaft, impeller attachment, bearings and adjustment architecture.
Cross mechanical seals by exact specification and chamber geometry.
Match alloy and process-service requirements independently of platform name.
Use the installed drawing/revision and measurements when part history is uncertain.
SUPPLY CATEGORIES
Three supply categories only
The comparison rows are technical function references. They do not create a quote line or prove that a specific item is available.
Casing and cover enquiries require exact item-level supply confirmation.
Impeller enquiries require engineering review; individual fitment is not established by this comparison.
Shaft and shaft-sleeve enquiries require separate item identification and supply confirmation.
Bearings, bearing housings, carriers, seals and other unlisted components remain technical references only. Send exact identifiers to engineering for review; no product is added to a quote from this functional matrix.
BUYER QUESTIONS
Cross-platform compatibility questions
Can I use a Durco impeller in a Goulds 3196?
Do not assume it. The platforms use different internal architecture and interfaces.
Does ASME B73.1 mean internal parts interchange?
No. The standard supports external installation envelope compatibility, not universal internal-part interchange.
Are Goulds and Durco shafts interchangeable?
Verify every platform-specific interface, dimension and material before considering a cross.
Does the same item number mean the same part?
No. Item 108 is an adapter function on both lists, but the parts are not proven equivalent by the number.
Can a complete Mark III-style pump replace a 3196 installation?
A complete-pump replacement can be reviewed against the GA, duty, driver, baseplate and process requirements.
Can bearings or seals cross between platforms?
Sometimes bought-out components share specifications, but cross by exact designation and dimensions.
Not Sure Whether the Parts Cross?
Send both pump identities, drawings and available measurements for an engineering compatibility review. This request does not add non-supplied technical references to a product quote.