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 蝶閥為偏心金屬密封結構,密封形式為金屬對金屬密封,可調換金屬密封圈對金屬密封,不銹鋼板與石墨復合板密封圈對金屬密封.硬密封蝶閥的驅動形式除了電動之外還有：手動,蝸輪桿傳動,氣動等

D343H蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內，圓盤形蝶板繞著軸線旋轉，旋轉角度為0°~90°之間，旋轉到90°時，閥門則牌全開狀態

D343H的結構特點：1、結構緊湊、體積小、重量輕、操作靈活、開閉扭矩小、蝶板工作平穩、噪音小、維修方便。 

　　2、設計采用三維偏心密封原理，可達到完全密封，氣壓試驗泄漏量為零。 

3、密封副選用不銹鋼材料，并在制造過程中采用特殊的工藝處理，具有耐高溫、高壓、耐磨、耐腐蝕、使用壽命長的特點。

　目前 ,D343H蝶閥作為一種用來實現管路系統通斷及流量控制的部件，已在石油、化工、冶金、水電等許多領域中得到極為廣泛地應用。在已公知的蝶閥技術中，其密封形式多采用密封結構，密封材料為橡膠、聚四氟乙烯等。由于結構特征的限制，不適應耐高溫、高壓及耐腐蝕、抗磨損等行業。現有一種比較先進的蝶閥是三偏心金屬硬密封蝶閥，閥體和閥座為連體構件，閥座密封表面層堆焊耐溫、耐蝕合金材料。多層軟疊式密封圈固定在閥板上，這種蝶閥與傳統蝶閥相比具有耐高溫，操作輕便，啟閉無磨擦，關閉時隨著傳動機構的力矩增大來補償密封，提高了蝶閥的密封性能及延長使用壽命的優點。

     主要技術參數

　　 

公稱通經DN（mm)	50～2000
公稱藥理PN（MPa)	0.6	1.0	1.6			2.5
密封試驗(MPa)	0.66	1.1	1.76			2.75
強度試驗(MPa)	0.9	1.5	2.4			3.75
適用溫度	碳鋼：-29℃～425℃ 不銹鋼：-40℃～650℃
適用介質	水、空氣、天然氣、油品及弱腐蝕性流體
泄漏率	符合GB/T13927-92標準
驅動方式	蝸輪傳動、電動、氣動、液動

      主要連接尺寸

公稱通經(DN)	主要尺寸			法蘭尺寸和螺栓規格
				1.0MPa			1.6MPa			2.5MPa
	L	H1	H	D	D1	n-Фd	D	D1	n-Фd	D	D1	n-Фd
50	108	350	112	165	125	4-18	165	125	4-18	165	125	4-18
65	112	370	115	185	145	4-18	185	145	4-18	185	145	8-18
80	114	380	120	200	160	4-18	200	160	8-18	200	160	8-18
100	127	420	138	220	180	8-18	220	180	8-18	235	190	8-22
125	140	460	164	250	210	8-18	250	210	8-22	270	220	8-26
150	140	555	175	285	240	8-22	285	240	8-22	300	250	8-26
200	152	760	200	340	295	8-22	340	295	12-22	360	310	12-26
250	165	830	243	395	350	12-22	405	355	12-26	425	370	12-30
300	178	895	250	445	400	12-22	460	410	12-26	485	430	16-30
350	190	950	280	505	460	16-22	520	470	16-26	555	490	16-33
400	216	1190	305	565	515	16-26	580	525	16-30	620	550	16-36
450	222	1255	350	615	565	20-26	640	585	20-30	670	600	20-36
500	229	1305	380	670	620	20-26	715	650	20-33	730	660	20-36
600	267	1340	445	780	725	20-30	840	770	20-36	845	770	20-39
700	292	1520	480	895	840	24-30	910	840	24-36	960	875	24-42
800	318	1710	530	1015	950	24-33	1025	950	24-39	1085	990	24-48
900	330	1810	580	1115	1050	28-33	1125	1050	28-39	1185	1090	28-48
1000	410	1960	650	1230	1160	28-36	1255	1170	28-42	1320	1210	28-56
1200	470	2250	760	1455	1380	32-39	1485	1390	32-48	1530	1420	32-56
1400	530	2435	850	1675	1590	36-42	1685	1590	36-48	1755	1640	36-62
1600	600	2780	1030	1915	1820	40-48	1930	1820	40-56	1975	1860	40-62
1800	670	3020	1230	2115	2020	44-48	2130	2020	44-56	2195	2070	44-70
2000	760	3270	1350	2325	2230	48-48	2345	2230	48-62	2425	2300	48-70

 

D341H蝸輪法蘭鑄鋼蝶閥 Download Google：
一、Product Parameters

1、Standard, product name, model, nominal diameter.

2、Medium, temperature and pressure range.

3、Are there any accessories, delivery time, special requirements, etc. so that we can choose the right type for you.

二、If the design unit has selected the valve model of our company, please order directly with our sales center according to the valve parameters.
三、When the occasion you use is very important or the environment is more complicated, please provide design drawings and detailed parameters, our engineer experts will concentrate on reviewing and analyzing for you. We can provide you with professional solutions, including design, custom-made, complete set, operation and service. We have always been a leader in the valve industry, providing you with the latest valve knowledge, best service, and best technical consultants. If you have any questions, please contact us, we will do our best to provide you with quality service.

Our company's product warranty period is one year from the factory date. We promise: three guarantees for quality, free repair / replacement of quality problems during the warranty period
1、Pre-sale Service

A、According to the special requirements of customers, technical exchange, design and manufacture of products.

B、Provide pre-sale technical questions for customers to help customers rationalize selection.

C、Provide new, special and difficult engineering production technology consultation or draw up suitable production plan

2、Sale Service

A、Keep the contract and deliver on time.

B、Keep in touch with customers in time to solve problems.

3、After-sales Service

A、Assist customers in drafting construction cases

B、Regular return visit usage

C、During the warranty period, free repair / replacement of quality problems