Conval vs Weir Valves
How Conval and Weir Valves compare on origin, specialisation and valve range — and the Vajra alternative to both, supplied to the same standards with full certification.
Conval vs Weir Valves: 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. Weir Valves (UK / USA, est. 1871) is known for High-pressure forged steel gate, globe, and check valves; ASME Class 600–4500 power plant and nuclear valves; Atwood & Morrill, Hopkinsons, and Pacific Valves legacy brands. 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 | Weir Valves | |
|---|---|---|
| Origin | USA | UK / USA |
| Founded | 1965 | 1871 |
| Known for | High-pressure cryogenic and power plant needle, globe, and gauge valves; steam and boiler feedwater applications | High-pressure forged steel gate, globe, and check valves; ASME Class 600–4500 power plant and nuclear valves; Atwood & Morrill, Hopkinsons, and Pacific Valves legacy brands |
| Valve range | 3 categories | 3 categories |
Where Conval and Weir Valves 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 Weir Valves — 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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