{"id":8553,"date":"2025-03-04T11:18:36","date_gmt":"2025-03-04T03:18:36","guid":{"rendered":"http:\/\/www.zhengyuan-valve.com\/?p=8553"},"modified":"2025-03-04T11:18:36","modified_gmt":"2025-03-04T03:18:36","slug":"detailed-comparison-of-the-strengths-of-forged-steel-stop-valves-and-ordinary-cast-steel-stop-valves","status":"publish","type":"post","link":"http:\/\/www.zhengyuan-valve.com\/?p=8553","title":{"rendered":"Detailed comparison of the strengths of forged steel stop valves and ordinary cast steel stop valves"},"content":{"rendered":"

The valve body, valve cover and other core components of the forged steel stop valve are forged from a whole piece of steel. Compared with the casting process, forging can eliminate the internal pores of the metal, increase the material density by 20%-30%, and the compressive strength can reach 1.5 times that of ordinary steel. The valve adopts a conical valve disc design inside. When closed, the valve disc and the valve seat form a “hard-to-hard” seal (metal surface direct contact seal). With the self-sealing structure, the greater the pressure, the tighter the seal.
\nThe “strength” of forged steel stop valves and ordinary cast steel stop valves is different, mainly reflected in the following:
\nIn terms of pressure resistance:
\nForged steel stop valves can reach more than 25MPa; ordinary cast steel stop valves are usually \u226410MPa.
\nIn terms of temperature resistance range:
\nForged steel stop valves -196\u2103~+550\u2103; ordinary cast steel stop valves -29\u2103~+425\u2103.
\nIn terms of sealing life:
\nForged steel stop valves are opened and closed 5000 times without leakage; ordinary cast steel stop valves need to be replaced after about 2000 times.
\nMaintenance cost:
\nForged steel stop valves need to have their seals replaced every 5 years; ordinary cast steel stop valves need to be overhauled every 2 years.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

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