What is the best material for valves in the slurry system?
Thread Content
When the solid content in the catalytic slurry system is high, it causes severe wear on pumps, pipelines, and valves. I would like to ask what material is best for valves? Waiting urgently
The valve used in my installation is from Lanzhou Valve Factory, with a material of Cr5Mo.
The Z41Y valve will do; it’s made of alloy steel!
I agree with the view from floor 3; we will use this as well.
I agree with the views of those above; we are using Z41Y-40I.
If the sealing surface is severely worn, welding cemented carbide onto it will suffice; the valve body material can be chrome-molybdenum steel.
Choosing chromium-molybdenum steel will do; what’s really more important is to control the solid content in the slurry during operation. If that content is high, no material can withstand the grinding process.
In a typical Cr15Mo slurry system, the valves must be either fully open or fully closed. Do not use valves to limit flow, otherwise any material will get worn out. .
Chromomolybdenum steel is the better choice. The high solid content in the slurry cannot be addressed through this approach; instead, the cause of the high solid content must be resolved
We use Z41Y valves, and they are quite good. The key is to control the solid content
Since the slurry has a high solid content, the valve sealing surfaces are prone to wear; therefore, valves made of high-manganese-chromium alloy steel can be used. The American standard ones are better, but their price is 30% higher than that of the domestic standard ones.
Alloy steel will do; the key is to control the solid content of the slurry. Also, when operating the valves, try to open or close them completely, rather than using them to regulate flow.
I’m using Z41Y-40I; what’s important is to prevent wear during normal use. The valves I’ve used have been in service for about 5-6 years now, and no issues were found during inspections – they’re from Lanlian
Manganese-chromium alloy steel or high-chromium-molybdenum alloy steel
It is generally a chromium-molybdenum alloy, which is relatively wear-resistant and does not cause severe wear to the catalyst powder.
The catalytic slurry system has a high solid content, which places high demands on the valves; otherwise they break down frequently. How can production be maintained stably?