久久人人97超碰精品888 I 亚洲欧美日韩国产综合 I 99久久精品久久久久久ai换脸 I 白丝美女操出白浆 I 久久久久久欧美 I 日本国产极品诱惑 I 国产精品乱码久久久久久 I 成人综合日日夜夜 I 老司机午夜精品视频在线观看 I 精品亚洲成av人在线观看 I 9i免费看片黄 I 免费成人美女在线观看. I 999av电影 I 国产成人综合亚洲91猫咪 I 激情伦乱视频 I 久久麻豆一区二区 I 青娱乐极品盛宴一区二区 I 欧美精品久久99 I 成人激情视频免费在线 I 另类激情文学 I 国产片av在线免费观看 I 56国语精品自产拍在线观看 I 国产日韩视频在线观看 I 日本高清中文字幕有码在线 I 成人aaaa免费全部观看 I 天堂а√在线8种子蜜桃视频 I 国产成人免费视频 I 欧美美女啪啪 I 国产精品天干天干在观线 I 亚洲精品国产动漫 I 国模一区二区三区私拍视频 I 国产噜噜噜噜久久久久久久久 I 欧美三级乱人伦电影

Hydraulic Control Valve summary

Hydraulic control valve consists of valve body, valve cover, diaphragm, spring, hydraulic control valve is a kind of water is used since embellish type body, do not need to add oil lubrication of mechanical valve, hydraulic control valve with both can and form a complete set of solenoid valve and can be used alone, valve and filtering mechanism to facilitate troubleshooting, maintenance convenience, low prices, reliable use etc, especially in water conservancy irrigation have broad prospects.Water control valve is widely used in high-rise buildings, water supply and drainage industry to the drainage pipeline.

Water control valve according to the use of different purposes, functions and places can be evolved into a remote control ball float valve, pressure reducing valve, slow closing check valve, flow control valve, pressure relief valve, hydraulic electric control valve, pump control valve, etc..Water control valve to install a filter, and should be easy to sewage requirements.

Hydraulic Control Valve model selection

• The hydraulic control valve used in the engineering is qualified by the manufacturer, complete with all kinds of marks, and the technical data meet the requirements of products.

  According to the functional requirements, select the type of valve, and then according to the pipeline transmission medium, temperature, building standards and owners to requirements, to determine the valve body and sealing parts of the material.Common valve body materials are cast iron, copper iron, copper, plastic and so on.Common sealing surface and lining materials are copper alloy, plastic, steel, hard alloy, rubber and so on.The valve body material shall match the piping material.

  The nominal pressure of the valve has 0.6, 1.0, 1.6, 2.5 and 4.0 Mpa and other different levels, the pipeline conveying medium, its working pressure should be less than the nominal pressure value of the valve.

  The installation of hydraulic control valves in the project shall have enough space for management, operation, installation and maintenance, and shall meet the requirements of the pipeline for valves.

  When the pipeline is connected with a flange, the hydraulic control valve connected with a flange should be used.When the pipeline is connected by groove type, the hydraulic control valve connected by groove type should be used.

  The hydraulic control valve should be set in the medium one-way flow pipeline.

  The direction of the arrow on the main valve body of the hydraulic control valve must be consistent with the flow direction of the pipeline system.

  There should be no gas blocking or gas blocking in the pipe section connected with the hydraulic control valve.An automatic exhaust valve should be set in the highest gas storage section of the pipe network.

  When the valve is installed horizontally, the valve cover and stem should be up.When installed vertically, the valve cover and stem should face outward.

  The valve should be tested for strength and tightness before installation.

Hydraulic Control Valve standard

1.JB/ T10644-2006 "Hydraulic Control Valve"

The use of hydraulic control principle, through different structures to achieve the purpose of multi-purpose control valve general name.
It includes: remote control ball float valve, adjustable pressure reducing valve, slow closing silencing check valve, flow control valve, pressure relief/holding valve, hydraulic electric control valve, pump control valve, differential pressure bypass balance valve, emergency shut off valve.

2.CJ/T219-2005 "hydraulic control valve"

Using the principle of hydraulic control, with tubes and different components of the different control system of the general name of the valve.

3.CECS144-2002 Hydraulic Control Valve Application Design Code

The use of hydraulic control principle, through different structures to achieve the purpose of multi-purpose control valve general name.