Durco vs Emerson / Fisher
How Durco and Emerson / Fisher compare on origin, specialisation and valve range — and the Vajra alternative to both, supplied to the same standards with full certification.
Durco vs Emerson / Fisher: what is the difference?
Durco (USA, est. 1912) is known for Corrosion-resistant alloy valves for chemical service - Alloy 20, Hastelloy C-276, titanium, and high-silicon iron butterfly, globe, and ball valves. Emerson / Fisher (USA (Marshalltown, Iowa), est. 1880 (Fisher); Emerson acquisition 1992) is known for Control valves, smart positioners, ESD valves - DeltaV DCS / SIS integration. They overlap most in ball valves, gate valves, butterfly valves. Below is the side-by-side, then the Vajra equivalent — a peer manufacturer supplying the same standards.
| Durco | Emerson / Fisher | |
|---|---|---|
| Origin | USA | USA (Marshalltown, Iowa) |
| Founded | 1912 | 1880 (Fisher); Emerson acquisition 1992 |
| Known for | Corrosion-resistant alloy valves for chemical service - Alloy 20, Hastelloy C-276, titanium, and high-silicon iron butterfly, globe, and ball valves | Control valves, smart positioners, ESD valves - DeltaV DCS / SIS integration |
| Valve range | 4 categories | 4 categories |
Where Durco and Emerson / Fisher compete
The Vajra alternative to both
Vajra Industrial Solutions is a peer valve manufacturer supplying API 6D / ASME B16.34 certified valves equivalent to both Durco and Emerson / Fisher — under one PO, with full documentation.
- ASTM A351 CN7M (Alloy 20), CW-6M (Hastelloy C-276), and A890 5A (Super Duplex) globe, gate, ball, and butterfly valves
- Titanium Grade 2 valves for concentrated nitric acid and bleach (NaOCl) service
- PVDF-lined and PTFE-lined butterfly valves and ball valves for chlorine, hydrofluoric acid, and aggressive oxidising service
- EN 10204 3.1 MTCs with chemistry and mechanical properties, NACE MR0103 hardness compliance certificates
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