大量生产PZ41H-100C DN400 流动阻力小。阀体内部介质通道是直通的，介质成直线流动

大量生产PZ41H-100C DN400 流动阻力小。阀体内部介质通道是直通的，介质成直线流动

Mass production PZ41H - 100 - c DN400 flow resistance is small. Body internal media channel is direct, medium flow in a straight line

【壳体材料和密封】　　

1. 金属材料闸阀：如碳钢闸阀、合金钢闸阀、不锈钢闸阀、铸铁闸阀、钛合金闸阀、蒙乃尔闸阀、铜合金闸阀、铝合金闸阀、铅合金闸阀等。
2. 金属阀体衬里闸阀：如衬胶闸阀、衬氟闸阀、衬铅闸阀、衬塑闸阀、衬搪瓷闸阀。
3. 非金属材料闸阀：如陶瓷闸阀、玻璃闸阀、塑料闸阀。

【闸阀的特点】
重量轻：本体采用***球黑铸铁制成，重量较传统闸阀重量减轻约20%~30%，安装维修方便。
平底式闸座：传统的闸阀往往在通水洗管后即因外物诸如石头，木块、水泥、铁屑、杂物等淤积于阀底凹槽内，容易造成无法关闭紧密而形成漏水现象，弹性座封闸阀底部采用与水管机同的平底设计，不易造成杂物淤积，使流体畅通无阻。
整体包胶：闸板采用高品质的橡胶进行整体内、外包胶，欧洲***的橡胶硫化技术使得硫化后的闸板能够******的几何尺寸，且橡胶与球墨铸闸板接着牢靠，不易脱落及弹性记忆佳。水

精铸阀体：阀体采用精密铸造，***的几何尺寸使得阀体内部无需任何精加工即可***闸阀的密封性。

闸阀具有以下优点：
①流动阻力小。阀体内部介质通道是直通的，介质成直线流动，流动阻力小。
②启闭时较省力。是与截止阀相比而言，因为无论是开或闭，闸板运动方向均与介质流动方向相垂直。
③高度大，启闭时间长。闸板的启闭行程较大，降是通过螺杆进行的。
④水锤现象不易产生。原因是关闭时间长。
⑤介质可向两侧任意方向流动，易于安装。闸阀通道两侧是对称的。
⑥结构长度(系壳体两连接端面之间的距离)较小。
⑦密封面易磨损，影响使用寿命。启闭时，闸板与阀座两个密封面相互摩擦滑动，要介质压力作用下易产生擦伤磨损，影响密封性能，缩短使用寿命。

The shell material and seal 】

1. The metal gate valves: gate valves, such as carbon steel, alloy steel gate, stainless steel gate valves, cast iron gate valves, titanium alloy valve and monel valve gate valve gate valves, copper alloy, aluminum alloy, lead alloy gate valves, etc.

2. The metal body lining gate valve, such as rubber gate, fluorine-butterfly gate, lead-lined, lining enamel gate valve gate, lining plastic valves.

3. Non-metallic materials gate: such as ceramic gate valve gate, glass, plastic gate valves.

"The characteristics of the gate"

Made from light weight: ontology with senior black iron ball, compared with traditional gate valves, the weight about 20% ~ 20% reduction in weight, easy installation and maintenance.

Flat type brake block: traditional gate often wash the tube in the water after the external objects such as stone, wood, cement, iron filings, sundry sedimentation on the bottom of the valve such as the slots, easy to cause cannot close tightly and form slack phenomenon, at the bottom of the seal of the elastic base seat gate valves with water pipe with flat design, not easy to cause debris deposition, make the flow unimpeded.

The overall plastic bags: ram is made of high quality rubber, outsourcing, the whole Europe first-class rubber vulcanization technology make the gate to ensure accurate after vulcanization of geometry size, and rubber and ductile cast gate, then fall off not easily and elastic memory preferred. water

Jingzhu valve: the valve body adopts precision casting, precise geometry size inside the body without any finishing guarantee seal gate valves.

Gate valve has the following advantages:

(1) flow resistance is small. Body internal media channel is direct, medium flows in a straight line, small flow resistance.

(2) more energy when opening and closing. Is compared with the cut-off valve, because whether on or off, ram direction perpendicular to flow direction of medium.

(3) height, opening and closing time is long. Gate opening and closing of the trip is bigger, is through the screw.

(4) water hammer is not easy to produce. Reason is the closing time is long.

(5) medium flows on both sides to any direction, easy to install. Gate on both sides of channel is symmetric.

6 structure length (department of shell distance) between the two connection end face is smaller.

All landowners sealing surface wear easily, affect the service life. Opening and closing, disc and seat sealing surface friction between two sliding, to medium pressure easy cause abrasion wear, affect the sealing performance, shorten service life.

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