Anderson Greenwood vs Parker Hannifin
How Anderson Greenwood and Parker Hannifin compare on origin, specialisation and valve range — and the Vajra alternative to both, supplied to the same standards with full certification.
Anderson Greenwood vs Parker Hannifin: what is the difference?
Anderson Greenwood (USA, est. 1947) is known for Pilot-operated safety relief valves, pressure relief valves, and instrumentation valves for oil & gas and petrochemical. Parker Hannifin (USA, est. 1917) is known for Instrumentation fittings, needle valves, ball valves, manifolds, and high-pressure process valves (formerly Autoclave Engineers and Gould/Watts Fluidair). They overlap most in needle valves, accessories. Below is the side-by-side, then the Vajra equivalent — a peer manufacturer supplying the same standards.
| Anderson Greenwood | Parker Hannifin | |
|---|---|---|
| Origin | USA | USA |
| Founded | 1947 | 1917 |
| Known for | Pilot-operated safety relief valves, pressure relief valves, and instrumentation valves for oil & gas and petrochemical | Instrumentation fittings, needle valves, ball valves, manifolds, and high-pressure process valves (formerly Autoclave Engineers and Gould/Watts Fluidair) |
| Valve range | 3 categories | 3 categories |
Where Anderson Greenwood and Parker Hannifin 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 Anderson Greenwood and Parker Hannifin — under one PO, with full documentation.
- API 526 safety relief valves - orifice sizes D through T, WCB/SS 316/Duplex body
- ASME Section VIII UV stamp and National Board certification available
- API 527 seat tightness tested - 0 bph or 40 bph leakage per orifice size
- Pilot-operated safety valves for back-pressure service and set pressure <10% CDTP
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