Class 150 covers the majority of low-pressure process, utility and water service. The bodies are lighter and cheaper than higher classes, which is why they are bought in quantity and replaced without ceremony.
Because Class 150 valves are inexpensive new, the resale market is quantity-driven. Large gate and check valves in good condition are the strongest items; small valves need volume to be worth moving.
Review points
What decides the value of asme class 150 valves
Size matters more than class
A twenty-inch Class 150 gate valve is a real item; a two-inch one is not, on its own.
Body material
Stainless and alloy Class 150 valves outperform carbon steel on value.
Quantity
Count by size. Class 150 lots are usually bought as inventories.
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
Are Class 150 valves worth selling?
Yes, in quantity and in larger sizes. Individually, only the stainless and alloy items justify a pickup.
Can Class 150 valves be used in higher classes?
No. Pressure class is a rating and cannot be substituted.
Do you buy Class 150 iron valves?
Yes, in larger sizes and sound condition.