China Standard Gearbox Operated with Ductile Iron Body and Concentric Design Wafer Butterfly Valve cycloidal gearbox

Product Description

Gearbox Operated with Ductile Iron Body and Concentric Design Wafer Butterfly Valve

Product Description

Butterfly valve is opened and closed by disc type Reciprocating gyrati Open close and adjust at about 90 degrees A valve for regulating fluid passages.

Butterfly valves are not only simple in structure, small in volume, light in weight, low in material consumption, small in installation size, small in driving moment, simple in operation and fast in operation, but also have good flow regulation function and sealing characteristics.

They are 1 of the fastest growing valve varieties in recent decades. Especially in developed countries such as  America, Japan, Germany, France and Italy, butterfly valves are widely used. The varieties and quantities of butterfly valves are still expanding, and they are developing toward high temperature, high pressure, large caliber, high sealing, long life, excellent regulation characteristics and multi-function of valves.

Their reliability and other performance indexes are all equal. Up to a higher level, and has partially replaced globe valves, gate valves and ball valves. With the advancement of butterfly valve technology, butterfly valve will become the dominant valve form in a predictable short time, especially in the field of large and medium caliber, medium and low pressure.

In order to meet the requirements of industrial applications such as high and low temperature, strong erosion and long service

life, metal-sealed butterfly valves have been greatly developed in recent decades.

With the application of high temperature resistance, low temperature resistance, strong corrosion resistance, strong erosion resistance and high strength alloy materials in butterfly valves, metal-sealed butterfly valves have been widely used in high and low temperature, strong erosion resistance, long life and other industrial fields, so that the technology of butterfly valves has reached a new level.


Butterfly valves are easy and fast to open.

Butterfly valves are relatively inexpensive to build.

Butterfly valves have less space requirements.

Butterfly Valves are generally associated with reduced maintenance.




Size:11/2 “- 24

Connection mode:Flange

Pressure ranking:Class125/Class150

Working pressure:1.6Mpa

Flange standard:ANSI B16.1


Seat material Pressure level test pressure Operating temperature,
(-10-80ºC) and allowable pressure MPa
(-80-120ºC) allowable pressure MPa
Operating temperature,(150ºC) allowable pressure MPa Applicable medium
PN10 1.5 1.0 Water, sewage, seawater, oil, gas
PN16 2.4 1.6
PN25 3.8 2.5
PN10 1.5 1.0 1.0 Water, sewage, seawater, oil, gas
PN16 2.4 1.6 1.6
PN25 3.8 2.5 2.5
PN10 1.5 1.0 1.0 0.30 Water, sewage, seawater, oil, gas
PN16 2.4 1.6 1.6 0.45
PN25 3.8 2.5 2.5 0.60
PN10 1.5 1.0 1.0 0.30 Water, sewage, seawater, oil, gas
PN16 2.4 1.6 1.6 0.45
PN25 3.8 2.5 2.5 0.60


NPS 2 21/2 3 4 5 6 8 10 12 14 16 18 20 24 28 30 32 36 40 48
DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 1000 1200
PN10 L(mm) 43 46 46 52 56 56 60 68 78 78 102 114 127 154 165 190 190 203 216 254
Torque valueN/M 16 20 26 43 88 101 247 338 394 884 1105 1526 1968 3370
PN16 L(mm) 43 46 46 52 56 56 60 68 78 78 102 114 127 154 165 190 190 203 216 254
Torque valueN/M 20 23 34 52 101 120 393 390 468 927 1755 1950 2773 5070
PN25 L(mm) 43 46 46 52 56 56 60 68 78 78 102 114 127 154 165 190 190 203 216 254
Torque valueN/M 22 27 39 60 117 138 337 449 538 1066 2019 2243 3189 5831



Packaging & Shipping






Company Profile

ZheJiang Flow Valve &Fitting Co, Ltd. was founded in 1998, mainly in foreign trade export business, has invested in two professional manufacturing factories in ZheJiang Xihu (West Lake) Dis. Waigang Industrial Zoneand ZheJiang Xihu (West Lake) Jingbin Industrial Park.

These 2 subordinate factories are responsible for the professional production of ANSl, DINBS, GB and other standards of ball valve, butterfly valve, gate valve, stop valve, balance valve, filter, plug valve, control valve and other series of products.

Nearly 80% of the company’s products are exported to Europe,America, the Middle East, Southeast Asia and other parts of the world and we also conduct technical cooperation and OEM production with many European and American companies.

ZheJiang Flow Valve & Fitting Co., Ltd. began to actively participate in major domestic engineering projects in 2003.

lt has established 5 sales centers in ZheJiang , ZheJiang , HangZhou, HangZhou and ZheJiang , and its business covers northeast China, North China, northwest China,Southwest China, Central China, South China and other regions.

The sales network and after-sales network basically cover most regions of mainland China.









Q1: Can I have a sample order for valve?

A1:Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2:Do you have any MOQ limit for valve order?
A2: Low MOQ, 1pc for sample checking is available.
Q3: How do you ship the goods and how long does it take to arrive?
A3: We usually ship by sea. It usually takes 30 days to arrive. Airline shipping also optional.
Q4:How to proceed an order for valve?
A4: Firstly let us know your requirements or application.
      Secondly We quote according to your requirements or our suggestions.
      Thirdly customer confirms the samples and places deposit for formal order.
      Fourthly We arrange the production.
Q5:Do you offer guarantee for the products?
A5: Yes, we offer 1 year warranty to our products.

Q6: Why choose us? 
A6: We are a manufacturer, we have been manufacturing for over 20 years.


Media: Water, Gas, Oil
Driving Mode: Manual, Worm Gear, Electric, Hydraulic, Pneumatic
Connection Form: Flange
US$ 1/Piece
1 Piece(Min.Order)


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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

worm gearbox

What are the Noise Levels Associated with Worm Gearboxes?

The noise levels associated with worm gearboxes can vary depending on several factors, including the design, quality, operating conditions, and maintenance of the gearbox. Here are some key points to consider:

  • Design and Quality: Well-designed and high-quality worm gearboxes tend to produce lower noise levels. Factors such as gear tooth profile, precision manufacturing, and proper alignment can contribute to reduced noise.
  • Gear Engagement: The way the worm and worm wheel engage and mesh with each other can impact noise levels. Proper tooth contact and alignment can help minimize noise during operation.
  • Lubrication: Inadequate or improper lubrication can lead to increased friction and wear, resulting in higher noise levels. Using the recommended lubricant and maintaining proper lubrication levels are important for noise reduction.
  • Operating Conditions: Operating the gearbox within its specified load and speed limits can help prevent excessive noise generation. Overloading or operating at high speeds beyond the gearbox’s capabilities can lead to increased noise.
  • Backlash: Excessive backlash or play between the gear teeth can lead to impact noise as the teeth engage. Proper backlash adjustment can help mitigate this issue.
  • Maintenance: Regular maintenance, including gear inspection, lubrication checks, and addressing any wear or damage, can help keep noise levels in check.

It’s important to note that while worm gearboxes can produce some noise due to the nature of gear meshing, proper design, maintenance, and operation can significantly reduce noise levels. If noise is a concern for your application, consulting with gearbox manufacturers and experts can provide insights into selecting the right gearbox type and implementing measures to minimize noise.

worm gearbox

Materials Used for Worm Gears

Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:

  • Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
  • Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
  • Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
  • Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
  • Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
  • Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.

The choice of material depends on factors such as the application’s load, speed, operating environment, and required performance characteristics. It’s important to consider these factors when selecting the appropriate material for worm gears to ensure optimal performance and longevity.

worm gearbox

Can a Worm Gearbox Provide High Torque Output?

Yes, a worm gearbox is capable of providing high torque output due to its unique design and principle of operation. Worm gears are known for their high torque multiplication capabilities, making them suitable for applications that require significant torque transfer.

The torque output of a worm gearbox is influenced by several factors:

  • Lead Angle: The lead angle of the worm affects the mechanical advantage of the gear system. A larger lead angle can result in higher torque output.
  • Worm Diameter: A larger diameter worm can offer increased torque output as it provides more contact area with the gear.
  • Gear Ratio: The gear ratio between the worm and the gear determines the torque multiplication factor. A higher gear ratio leads to higher torque output.
  • Lubrication: Proper lubrication is essential to minimize friction and ensure efficient torque transmission.
  • Material and Quality: High-quality materials and precision manufacturing contribute to the gearbox’s ability to handle high torque loads.

Due to their ability to provide high torque output in a compact form factor, worm gearboxes are commonly used in various industrial applications, including heavy machinery, construction equipment, conveyor systems, and more.

China Standard Gearbox Operated with Ductile Iron Body and Concentric Design Wafer Butterfly Valve   cycloidal gearbox	China Standard Gearbox Operated with Ductile Iron Body and Concentric Design Wafer Butterfly Valve   cycloidal gearbox
editor by CX 2023-10-21

worm drive gearbox

As one of the leading worm drive gearbox manufacturers, suppliers, and exporters of mechanical products, We offer worm drive gearbox and many other products.

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