产品概述
此刀形闸阀是闸阀中的新品种，体积小，重量轻，轻型节材，是污水、煤浆、糖浆、泥浆、空气、渣水混合物、供水、造纸、矿山等行业中的理想产品。
暗板刀型闸阀采用金属对金属的硬密封，或采用金属对橡胶的软密封。在开启和关闭的过程中，闸板与密封面采用了特殊的设计，摩擦较少，经久耐用。
此种刀形闸的上密封突破了常规的密封形式，采用上盖结构，使得上密封由大面积的矩形密封改成了小面积的圆周密封，密封性能大大提高。在圆周密封的基础上，又采用了目前国际上*的浮动密封结构，使得上密封达到了与管道同寿命的程度，从而整体上提高了阀门的使用寿命。
此种闸阀在手轮顶部加装封套装置后，可以使阀门活动部件全部处于封闭状态，闸板和阀杆的丝杆传动不会因润滑油干枯而卡涩。特别适合在粉尘及干燥的恶劣环境中长期正常工作。
注：可根据使用单位的环境和要求来设计与生产，适合用户的安装和使用。
电动暗板刀型闸阀驱动部分采用多回转电动装置，用以驱动和控制阀门的开启和关闭，操作人员可以在控制室内远距离对阀门进行控制也可以现场手动操作，也可以与计算机配合实现计算机自动控制。广泛应用于排水、供热、电站、化工、食品、造纸、制药、煤碳、采矿等工程，满足了现代工、农业自动化要求。
技术参数范围
公称压力：0.6MPa、1.0MPa、1.6MPa、2.5MPa、150LB
公称通径：DN50mm~DN2000mm NPS 2"~80"
适用温度：-38℃~1100℃（具体温度范围视密封副材质和介质性质而定）
连接法兰：ANSI B16.5、GB/T9113、JB/T79、HG、SH、JIS、DIN、NF、BS
主体材料：C.I、WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8、CF8M、CF3、CF3M、2Cr25Ni20
密封形式：硬密封、软密封
泄 漏 量：硬密封：D级（液体0.1×DNmm3/s）；软密封：（零泄漏）
配套附件：安装法兰
电动装置参数
1、电源：AC380V、50HZ
2、标准型：标准型产品具有防尘、防雨水的外壳 保护能力、保护等级IP65，可直接用于户外
3、防水型：产品具有防尘、防浸水（IP67）的外壳防护等级
4、防爆型（EX）：防爆等为DⅡ BT4/DⅡ CT4（不含乙炔）
5、环境温度：-20℃~40℃
6、可选：配电气控制器
产品特性
1、启闭迅速，平衡可靠，自动化程度高
2、安装高度及位置不受限制
3、采用防爆型电动装置，在易燃易爆，甚至有毒气体环境中可以正常工作
4、配有手动，万一供电间断，可以手动操作开启或关闭阀门，有效控制介质，防止事故发生
Product introduction
This knife gate valve is a new generation gate valve characteristic of small construction, low weight, and high material utilization. It is an ideal product for such sectors including sewage disposal, coal slurry, syrup, sludge, air, slag-water mix, water supply, papermaking, mining, etc.
The knife gate valve adopts metal-to-metal hard sealing or metal-to-rubber soft sealing. In the processing of valve switching on/off, the gate plate and sealing face are provided with special design, featuring limited friction and high durability.
The sealing of the knife gate valve represents a breakthrough in traditional sealing form. Upper cap structure changes large area rectangular sealing face of the upper sealing to small area circular sealing, with much enhanced sealing performance. Based on circular sealing, the valve is further provided with latest floating sealing construction in the world. Thus the upper sealing shares the same useful life with pipeline, so the overall useful life of the valve increases.
After envelope is added to the top of hａnd wheel, all the moving parts of the gate valve will be enclosed. Therefore, the rotation of lead screws between gate plate and stem will not block because of short supply of lubricating oil. In particular, the valve is applicable for long-term service in severely dusty and dry environment.
Note: The valve could be designed and manufactured based on client's site conditions and requirements for better installation and application.
The driving part of the product is a multi-revolving electric device for driving the valve and controlling on/off of the valve. Operator could control valve remotely in control room as well as run the valve manually on site. Automatic control is available as well by linking to computer. The product is now widely used in such sectors including drainage, heating, electricity generation, chemical industry, foodstuff, papermaking, pharmaceutical, coal mining, mining, etc., satisfying the needs of automation in modern industry and modern agriculture.
Technical Parameter Range
Nominal pressure:0.6MPa、1.0MPa、1.6MPa、2.5MPa、150LB
Nominal diameter:DN50mm~DN2000mm NPS 2"~80"
Suitable temperature:-38℃~1100℃（Range of temperature subject to the material of sealing and property of medium）
Flange drilling:ANSI B16.5、GB/T9113、JB/T79、HG、SH、JIS、DIN、NF、BS
Main materials:C.I、WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8、CF8M、CF3、CF3M、2Cr25Ni20
Seal type:Stainless steel hard seal、Teflon soft seal
Leakage:Stainless steel hard seal:Grade D(Liquid0.1×DNmm3/s)、Teflon soft seal:Grade A(Zero Leakage)
Accessories:Flange
Electric device parameters
Power supply: AC380AV, 50HZ.
Standard type: Standard type is equipped with dust-resistant, rain-proof casing. The protective level is IP65. It could be used directly outdoors.
Waterproof type: The casing is resistant to dust and water immersion (IP67 protective level).
Explosion-proof type (EX) DII BT4/DII CT4 explosion-proof level (excluding acetylene).
Ambient temperature: -20~40°C.
Optional: electrical controller
Optional accessories
1、Quick switching on/off, reliability, equilibrium, high level of automation.
2、Unlimited installation height and position.
3、Explosion-proof electric device that allows normal operation in inflammable and explosive environment or environment with poisonous gas.
4、Manual operating mechanism allowing manual switching on/off of the valve in case of power failure. The medium will be controlled effectively for prevention against accident.

主要外形及连接尺寸Profile and connection dimension											单位Unit:mm
PN	DN	L	D	D1	D2	H	N-M	PN	DN	L	D	D1	D2	H	N-M
0.6	150	57	280	240	210	980	8-20	1.0	150	57	285	240	210	980	8-20
	200	70	335	295	265	1055	8-20		200	70	340	295	265	1055	12-20
	250	70	390	350	320	1060	12-20		250	70	405	355	310	1060	12-22
	300	76	440	400	368	1230	12-20		300	76	460	410	375	1230	12-22
	350	76	500	460	428	1250	16-20		350	76	520	470	435	1250	16-22
	400	89	565	515	482	1767	16-22		400	89	580	525	485	1767	16-27
	450	89	615	565	532	1920	20-22		450	89	640	585	545	1920	20-27
	500	114	670	620	585	2010	20-22		500	114	715	650	609	2010	20-30
	600	114	780	725	685	2110	20-27		600	114	840	770	720	2110	20-36
	700	130	895	840	800	2400	24-27		700	130	910	840	788	2400	24-36
	800	130	1010	950	898	2800	24-30		800	130	1025	950	895	2800	24-36
	900	140	1110	1050	1005	3000	28-30		900	140	1125	1050	998	3000	28-36
	1000	216	1220	1160	1115	3400	28-30		1000	216	1255	1170	1110	3400	28-42
	1200	254	1450	1380	1325	3900	32-36		1200	254	1485	1390	1325	3900	32-48