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  • 手柄式全焊接球阀1.jpg
  • 手柄式全焊接球阀2.jpg

全焊接钢制球阀

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

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Classification:

Cast steel valve series

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Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆全焊接球阀概述

全焊接球阀在各个领域使用非常广泛。其优越的品质和高性能的稳定性是普通铸钢球阀所无法达到的,其使用寿命远远大于铸钢球阀,广泛应用于城市燃气、城市供热、石油化工、造船、钢铁、调压站、发电厂等各类管道设备上。全焊接球阀能长期可靠运行使用,不需要维护、调整及润滑,易于安装。
全焊接球阀,由于阀门的整体结构采用全焊接的工艺结构,使阀门的内、外密封得到了极大的提高,阀门的重量得到了很大的降低(特别是DN300以下)使阀门的安装变得更为便捷,不仅降低了工程施工的成本, 也节省了时间。
全焊接直埋球阀,可以直接深埋地下。不用设置地下阀门控制室,这样操作者不需要进入地下, 只需在地上用T型手柄进行传动操作即可, 非常方便, 避免了以往由于设置地下阀门控制室而存在的不安全隐患。
全焊接直埋球阀,可根据用户燃气管道的埋地深度,来为您设计不同的阀门高度。同时,也可根据用户对阀门连接端口的不同需要,为您设计了多种端口连接方式, 供您选择。

◆适用范围

城市煤气: 煤气输出管道、主干线及各支线供应管道等。
钢铁厂:各种流体管道、废气排放道、煤气和热力供应管道、燃料供应管道等。
集中供热: 大型供热设备输出管线、主干线、支线。
热交换机: 管道及各回路启闭。
各种工业设备: 各种热处理管道、各种工业煤气和热力管道。

◆主要零件材质

序号 名称 材料 序号 名称 材料
1 阀体 碳钢 ST 37.0 8 阀杆 20Cr13
2 焊接末端 碳钢ST 37.0 9 耐磨块 PTFE,20%C
3 球体 不锈钢CF8/SS 304 10 O型圈 氟橡胶
4 阀座 PTFE,20%C 11 O型圈 氟橡胶
5 备用垫圈 20Cr13 12 平垫 碳钢 ST 37.0
6 蝶形垫片 65Mn 13 垫料压套 碳钢ST 37.0
7 垫圈 氟橡胶 14 平台 碳钢ST 37.0

 

◆设计与制造规范

设计规范 API6D、ASMEB 16.34
材质 碳钢(A105)系列、奥氏体不锈钢系列、低温钢(LF9/LF2)系列
压力-温度 ASME B16.34、GB/T12224
结构长度 ASME B16.10、GB12221
对焊端形式 ASME B16.25、ASME B31.4/31.8
法兰连接 ASME B16.47、ASME B16.5、MSS SP-4、BS、DIN、JIS、GB、JB、HG、SH
试验与检验 API598、API6D
耐火试验 API 607、PAI 6FA
驱动方式 手动、电动、气动、液动、气液联动(按客户要求)

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