Class 900 valves are built for high-pressure process, power generation and large pipeline service. They are heavy, usually pressure seal or high-integrity bolted bonnet, and they are specified with full documentation.
Because they are expensive and rarely replaced casually, Class 900 surplus tends to be well preserved and well recorded. That makes it one of the better categories to sell.
Review points
What decides the value of asme class 900 valves
Pressure seal joint
The critical inspection point on high-class valves.
Certification
Material and pressure test records carry most of the value.
Size and pattern
Gate, globe and check dominate; ball and butterfly appear in pipeline service.
Selling it
How to present the lot
Count by size and pattern, and note the marking on the body. If you have certificates, include them; if you do not, say so rather than implying they exist.
Do not separate trim from bodies to sell them individually unless the trim is clearly identifiable and valuable on its own. In most cases the assembly is worth more together.
Questions sellers ask
Do you buy Class 900 valves without records?
Yes, at a discount. The material has to be verified before resale.
Can you handle the weight?
Yes. We arrange lifting and transport for heavy valves.
Are Class 900 valves worth more than Class 600?
Generally yes, because of the casting weight and the service.