Problems with valves for circulating water
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For circulating water valves with a diameter of DN600 and above, up to DN1000, what type is generally used? It turns out that the leaks in the DN450 and DN500 models I was using were usually internal leaks
For such large butterfly valves, the most economical option is the one that, even if of good quality, does not leak
For large diameters, butterfly valves are the choice; it doesn’t matter for water pipelines – if there’s a leak, then there’s a leak
Rubber centerline butterfly valves can meet the requirements
For large butterfly valves, that’s how it’s done in power plant circulating water systems: rubber ring sealing, with electric and hydraulic control options
Electric gate valve – easy to operate, with virtually no internal leakage once closed.
Internal leakage in the valve is normal; the key issue is to determine how much leakage there is.
Bray’s lined centerline valves offer the best value for money