NKJ41H flange-type vacuum isolation shut-off valve main connection size and weight

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NKJ41H Flanged vacuum isolation globe valve, this series of valve body adopts cast-forged structure, with a parallel double seal semi-mandatory two-way seal, sealing surface in-place movement and wedge wedge tight movement step by step to achieve zero leakage. Vacuum isolation globe valve for nominal pressure PN4.0 ~ 10.0Mpa, working temperature ≤ 200 ℃ thermal power plant backwater condensing system pipe, cut off or connected medium. Applicable medium: water, steam and so on. Sealing surface friction, opening and closing light, and sealing surface wear automatic compensation. Simple structure, compact, easy maintenance, long service life. The valve cover packing chamber is provided with a vacuum sealing structure, which has the function of self-expansion and compression, and the sealing is sealed with high-strength expansion materials to completely separate the system from the atmosphere and has good system air-tightness. This series of valve connection sub-flange, welding two kinds of driving methods are manual, electric two. The valve is suitable for working temperature ≤ 425 ℃ and ≤ 550 ℃, the working medium is water, steam or air pipe, as the opening and closing device; especially suitable for thermal power plant condensing and vacuum vacuum system, vacuum isolation seal.

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