Conval vs Durco
How Conval and Durco compare on origin, specialisation and valve range — and the Vajra alternative to both, supplied to the same standards with full certification.
Conval vs Durco: what is the difference?
Conval (USA, est. 1965) is known for High-pressure cryogenic and power plant needle, globe, and gauge valves; steam and boiler feedwater applications. 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. They overlap most in gate valves, globe valves. Below is the side-by-side, then the Vajra equivalent — a peer manufacturer supplying the same standards.
| Conval | Durco | |
|---|---|---|
| Origin | USA | USA |
| Founded | 1965 | 1912 |
| Known for | High-pressure cryogenic and power plant needle, globe, and gauge valves; steam and boiler feedwater applications | Corrosion-resistant alloy valves for chemical service - Alloy 20, Hastelloy C-276, titanium, and high-silicon iron butterfly, globe, and ball valves |
| Valve range | 3 categories | 4 categories |
Where Conval and Durco 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 Conval and Durco — under one PO, with full documentation.
- ASME B16.34 and API 602 forged needle and globe valves, Class 800 to 2500, with full 3.1 material certs
- Cryogenic testing per BS 6364 available - low-temperature A352 LCB/LCC and A182 F304L grades
- IBR certification available for steam and boiler feedwater service per Indian Boiler Regulations
- Instrument needle valves in 1/4″–2″ NPT/SW available for pressure gauge, transmitter, and impulse line isolation
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