产品介绍
结构及用途 CONSTRUCTION AND USAHE
该产品是引进欧洲高科技橡胶及阀门制造技术生产的，克服了橡胶老化及生锈等缺陷。该阀利用弹性闸板产生微量弹性变形的补偿作用达到良好的密封效果，该阀具有开关轻巧、密封可靠、弹性记忆佳及使用寿命长等显著优点，产品广泛用于自来水、污水、海水、水处理、环保、建筑、石油、化工、电力、食品、医药、轻纺、船舶、能源等行业管路线上作为调节和截流装置作用。
This product is made by means of importing the high-tech rubber and the know-how of valve manufacture of Europe and over comes the defectives as rubber aging and rust etc., It uses the compenseating actiion ftrom the micro-deformation of elasticity produced by the elastic gate plate to get the good sealing effect and features the advantages of light on-off, reliable sealing, good memory of elasticity, long duration and so on. It can be used as the adjust and shutoff device on the popeline in tap water, sewage,seawater,water treatment, environmentAl protection, construction, petroleum, chemical indystry, electric power, food medicine, light & textile industry, ship, energy source etc. industries.
平底式阀座Flat-bottom valve seat
一般闸阀往往在通水冲洗管过后即因外物诸如水泥块、铁屑等杂物淤积于阀门底凹槽内，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管道相同的平底设计，不易造成杂物淤积，使流体畅通无阻。
For the common gate valves, it is easy to make it unable to tihgtly close the valve and thus resulting in leakage after being rinsed with water because of the foreign matters such as stones, wood blocks, cement, ferric bits, sundry things etc. Which are piled up inside of the concave slot on the valve bottom. The elastic-seat enclosed gate valve uses the same design of flat-bottom as that of the pipeline so as not to be easy to get sundry matters piled up thus making the fluid smoothly flowing without any resistance.
重量轻Light weight
本阀采用高级球墨铸铁制成，重量较传统闸阀重量减轻约20%-30%，安装维修方便。
This valve is made of high-quality Ductalloy, resulting in a reduction of weight by about 20%-30% of that of the traditional ones and an easy installation and service.
精铸阀体Finely casted valve chest
阀体采用精密铸造，精确的几何尺寸使得阀体内部无需任何加工即可保证阀门的密封性。
The valve chest is finely casted and the accurate geometric sizes of it makes the internal part umecessary for and process for assuring the valve to be losely sealed.
阀板包胶 Rubber-wrapped valve plate
阀板采用高品质的橡胶进行整体内外包胶，欧洲一流的橡胶硫化技术使得硫化后的阀板能够保证精确的几何尺寸，且橡胶与球墨铸铁阀板接着牢靠，不易脱落及弹性记忆佳。
The valve plate is overally and inside and out-side wrapped with the rubber of top grade and the first-rate know-how of rubber sulphurization of Europe makes the sulphurized valve plate’s geometric size assured with accuracy and the joint between the rubber and the ductalloy valve plate reliable, not easy to fall out and leaves a good elastic memory.
三“O”型环密封圈Three o-type sealing rings
由于阀杆与阀盖采用三道“O”型环密封圈密封设计，可减少开关时的磨擦阻力，大幅度减少漏水现象及可以不停管路内介质流动进行更换密封圈。
The design of three O-type sealing rings used between both valve rod and valve cover can reduce the frictional resistance at open orclose and water leakage a great deql, and the sealing ring can be replaced without stopping the medium to flow inside of the pipeline.
不易碎裂Not fragile
以往传统低压闸阀采用球墨铸铁，常因外物碰撞或重压而造成断裂等现象，由于本阀阀体采用铸铁，此种情形已可大幅度减少。
The traditional low-pressure gate valves are made of cast-iron and often made broken or fragmentized when suffered a collision by a foreign object or a heavy press, which is greaty reduced to the valve chest of this valve due to the Ductalloy of which it is made.
有助生饮 Helpful to uncooked drinking
由于阀体内部以无毒性环氧树脂涂装，阀板的内外表面均以橡胶完全披覆而不至于出现铁水或腐蚀现象，可供生饮。
Because of the non-toxic epoxy resin coated on the internal of the valve chest and the rubber wrapped completely on both inner and outer surfaces of the valve plate,no ferric water or corrosion would occur, thus being helpful to uncooken drinking.
省力装置 Labour-saving device
DN450-600mm，可另行加装省力装置，所需扭力约为正常的1/2，仅需一只小手轮，在有压力情况下，即可操作全开或全关，该省力装置于每动作一次，需先将阀门全开后恢复省力功能。
To 450-600mm, the labour-saving device as shown in the figure on right-down can be additionally nountedm,with which, the required torque is about 1/2 of the one under the normal condition and, with a small handwheel only. At every time of action, the labour-saving function of the device will not be reset until the valve is fully opened.
主要外形及连接尺寸
| 公称通径 |
L |
D |
D1 |
b |
n-φd1 |
H |
| mm |
in |
| 50 |
2″ |
178 |
160 |
125 |
20 |
4-18 |
245 |
| 65 |
21/2″ |
190 |
180 |
145 |
20 |
4-18 |
275 |
| 80 |
3″ |
203 |
195 |
160 |
21 |
4-18/8-18 |
305 |
| 100 |
4″ |
229 |
215 |
180 |
21 |
8-18 |
330 |
| 125 |
5″ |
254 |
245 |
210 |
22 |
8-18 |
375 |
| 150 |
6″ |
267 |
285 |
240 |
22 |
8-23 |
415 |
| 200 |
8″ |
292 |
335 |
295 |
23 |
8-23/2-23 |
510 |
| 250 |
10″ |
330 |
390/405 |
350/355 |
24 |
12-23/12-25 |
620 |
| 300 |
12″ |
356 |
440/460 |
400/410 |
25 |
12-23/12-25 |
700 |
| 350 |
14″ |
381 |
500/520 |
460/470 |
26 |
16-23/6-25 |
785 |
| 400 |
16″ |
406 |
565/580 |
515/525 |
40 |
16-25/16-30 |
855 |
| 450 |
18″ |
432 |
615/640 |
565/585 |
44 |
20-25/20-30 |
950 |
| 500 |
20″ |
457 |
670/705 |
620/650 |
46 |
20-25/20-34 |
1050 |
| 600 |
24″ |
508 |
780/840 |
725/770 |
54 |
20-30/20-41 |
1200 |
注：①以上法兰尺寸按国标；②并可按 BS5163与DIN3352A．JIS5527标准制造。
