Introduction of a valve that operates and closes after the reverse flow begins.
Stop valves, such as shut-off valves and ball valves, can fundamentally stop both forward and reverse flow, whereas a "check valve" (non-return valve) only stops "reverse flow." Once reverse flow begins, the valve body operates to stop the flow, so except for some specially structured valves, flow adjustment is generally not possible. Commonly used in building facilities and general piping, there are swing type, lift type, dual plate type, and products with special structures such as Smolensky type and tilting type equipped with "springs" to suppress and improve water hammer, as well as ball type and foot valves. 【Features】 ■ Stops only "reverse flow" ■ The valve body operates to stop the flow after reverse flow begins *For more details, please refer to the PDF materials or feel free to contact us.
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【Specifications】 ■ Valve body material: Various cast and forged steel materials according to JIS, ASTM, ASME / Carbon steel, stainless steel, brass alloys ■ Fluids: Water, steam, gas, oil, etc. ■ Pressure class and nominal diameter: Class 150Lb to 2500Lb, up to 60" / JIS 10K to 63K, up to 1500A ■ Connection types: Socket weld, butt weld, wafer type, threaded, flange type* ■ Operation methods: Manual operation (including manual reduction gear), electric operation, pneumatic operation * For flange type, please specify the flange standard (ASME, JIS, etc.) and the facing shape (raised face (RF), flat face (FF), etc.). * The above specifications are standard ranges. We will select individually according to usage conditions and applications, so please provide flow conditions, etc. * For more details, please refer to the PDF materials or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Yoneida Shoten Co., Ltd. is engaged in the sale and repair of piping materials as well as the manufacturing and sale of various wire mesh products. We possess high specialized knowledge and know-how required for valve systems, such as functionality and durability, and we respond quickly to all valve-related needs through our extensive global network.