Notice:The original Zhejiang Chaoda valve Co., Ltd upgraded itself to Chaoda Valves Group Co., Ltd, that is the Chaoda Valves Group, and as Chaoda Group for short.


Lock Hopper Ball Valve



Bore: NPS1/2~NPS20,DN15~DN500
Rating: Class150~Class1500,PN16~PN160
Material: Carbon Steel,Stainless Steel,Alloy Steel,Duplex Stainless Steel
Operation: Manual,Gear Operated,Electric Operated,Pneumatic Operated
Applicable: Oil,Chemical,Natural Gas,Petrochemical,Coal Chemical and so on

Honor:Zhejiang Famous Brand,Zhejiang Famous Exporting Brand,


锁渣阀 product description

    锁渣阀适用于Class150~Class1500,PN16~PN100的各种管路上,用于截断或接通管路中的介质。选用不同的材质,CHAODA group的锁渣阀可分别适用于水,蒸汽,油品,硝酸,醋酸,氧化性介质,尿素等多种介质。锁渣阀的驱动方式为手动,蜗轮传动,气动或电动。锁渣阀一般采用法兰连接,也可采用对焊连接。锁渣阀的密封面采用金属与金属密封结构,填料采用柔性石墨,垫片采用不锈钢或钛合金+柔性石墨结构。因此,阀门即使在火灾情况下也能确保可靠的密封。

Lock Hopper valves(Generally flanged connection, but Butt-welding optional) are suitable for using on various kinds of pipeline from Class150 To Class1500, PN16 To PN100 to cut off or connect the flowing of medium. By using different material, the valves could be suitable for medium such as water, steam, oil, nitric acid, acetic acid, oxidizing substance, carbamide and etc. Manual/Bevel gear/pneumatic or electric actuators could be chosen by needs. Metal to metal sealed construction, graphite packing and stainless steel or titanium alloy+flexible graphite gasket ensures lock hopper valve a reliable sealing even under fire accident.


Lock Hopper valve is a special metal to metal sealed ball valve designed for the complex working condition of coal gasification which could suit the condition of high pressure & temperature & needing high wear-resistance feature. Lock Hopper valve aims to solve the long existed problem of valve couldn't close/open normally in pipeline of coal slurry feeding & black water process system due to the deposited medium & its wearing influence. So the lock hopper valve is a key valve in coal gasfication system to ensure system's long life span.

    锁渣阀环形弹簧能保持高温下的弹力稳定,并采用独特的密封措施,保证了弹簧范围内无灰渣,确保阀座的可浮动及球体的密封。采用硬质合金宽带自刮削机构,在阀门开关的同时实现球面自洁,防止灰渣堵塞在球体的密封面上。 CHAODA锁渣阀采用金属重熔技术将镍基硬质合金可靠地与球体,阀座基体表面重新融合在一起,其结合力明显地优于其他方式,可有效的防止硬质合金的剥落,脱落;合理的硬度差确保球体与阀座密封面寿命长,密封效果好。采用扭矩合理的气动执行机构和性能可靠的调压阀,电磁阀,换向阀,限为开关,过滤器等气路附件。

The spring in lock hopper valve could have a steady elastic performance under high temperature. And unique sealing measures have been done to ensure no ash would exist in spring area to ensure the sealing of ball and the moveable of seat. The hard alloy sealing face with Special scraping function could realize self cleaning while closing or opening the valve to avoid slag remaining on the surface of ball.  Remelting technology has been applied to combine the Ni-based hard alloy sealing material onto the ball and seat ring with a better combining force. Reasonable hardness difference between ball and seat ring ensures the long life span & good sealing effect . Pneumatic with proper torque and reliable air valve, solenoid valve, resersal valve, limit switch, filters and other accessories could be chosen if needed.

    CHAODA GROUP WENZHOU E-BUSINESS CO., wholly owned subsidiary by Chaoda Group,Professional sales CHAODA group products,CHAODA valve products。CHAODA valves won the reputations of Zhejiang Famous Trademark,Zhejiang Famous Brand,Zhejiang Famous Exporting Brand and also enjoys prizes of 101 National Patent。

锁渣阀 product features

     CHAODA 锁渣阀 has the features of Good sealing, reliable, safety and long life span.

Lock hopper valves developed by Chaoda have following good characteristics: good sealing performance, reliable safety guarantee, long life span and etc.

     CHAODA VALVES GROUP CO.,LTD. launched its quality management and safety system as ISO9001,ISO14001,OHSAS18001, API6D, CE/PED, API607,API6FA, ISO15848-1 TS and API 600.

锁渣阀 standards

 Design and manufacture standards:API 6D, API 608, BS 5351, GB/T 21385
 Face to face dimensions standards:ASME B 16.10, GB/T 12221
 Flange dimensions standards:ASME B 16.5, GB, JB, HG, SH, BS, DIN, JIS...
 Testing inspection standards:API 598,GB/T 13927,GB/T 26480,JB/T9092,ISO 5208

锁渣阀 parts and material

锁渣阀 main size and weight

CHAODA valves group co.,ltd. Professional manufacturing Lock Hopper Ball Valve.


How to Order:   

1.Clients could call telephone +86-0577-67319962 or email us your enquiry including following information.

①Valve’s type, End to End dimension ②Connection Ends ③Nominal diameter ④Service medium and temperature and working pressure range
⑤Material, test standard and other requirement ⑥CHAODA could supply all kinds of actuator and spare parts and so on as client’s requirement.

2.When received clients’ enquiry, we would select the suitable valves for your and give you a offer.

3.And have a communication over the Lock Hopper Ball Valve delivery or other special requirement.

4.When have special requirement on your Lock Hopper Ball Valve products, please specify it in the purchasing order.

5.Should you have any question, please send email to