Consultation on the repair of V-type control ball valves
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In the paper mill, V-type control valves and ball valves are used; the valve bodies are made of 316 stainless steel. The valve seats and ball valves have been hardened. The operating temperature in the field does not exceed 100°C, and the pressure does not exceed 1 MPa. Severe wear has occurred at the outlet valves on the slurry pipelines, with some cases even resulting in complete wear through of the valve bodies. What other solutions are available besides spraying the inner wall of the valve chamber?
First, it is necessary to determine the cause of the severe wear – whether it is due to impurities in the material or some other factor. Consider addressing the issue by removing particulate impurities from the slurry; otherwise, the problem cannot be resolved at its root. For your reference.
The entire interior of the valve chamber is sprayed with WC to increase hardness
I’m not sure whether ceramic ball valves are suitable for your operating conditions. If they are, the valve body can be lined with ceramic, the valve body itself can be made of stainless steel, and the ball can be coated with WC in stainless steel; this ensures wear resistance and prevents the ball from breaking easily. However, such valves are not suitable if the medium causes corrosion of the valve body.
Chlorine is used as a bleaching agent in the papermaking industry
The pipeline particles are too large; it is recommended to use a regulator of another specification