China Standard 1 Inch Butterfly Valve Gearbox Type From China comer gearbox

Product Description

1 inch butterfly valve gearbox type from china

 Pressure and temperature

Working pressure

PN10, PN16, CL150, JIS 5K/10K

Testing pressure

Shell: 1.5 times rated pressure

Seat: 1.1 times rated pressure

Working temperature

-10 °C to 80°C (NBR)

-10 °C to 120°C (EPDM)

-10 °C to 150°C (PTFE)

Suitable media

water, oil and gas


Product detail




Cast iron, Ductile iron, Carbon steel, Stainless steel.




Nickel ductile iron, AI bronze, Stainless steel, Carbon steel, Nylon


Carbon steel, Stainless steel



“O” ring



Stainless steel


Stainless steel


Design Standard

EN 593, MSS SP67, API 609, BS5155

Inspection & Test

API 598, ISO 5208, EN 12266

End Standard

ANSI: B16.1 CL 125LB; B16.5 CL 150LB; B16.47 150LB.

AS: 2129 Table D & E   BS 10 Table D & E

DIN: 2501: PN6, PN10 & PN16

EN: 1092: PN6, PN10 & PN16

ISO 2531: PN6, PN10 & PN16

ISO 7005: PN6, PN10 & PN16

KS: B 1511 / JIS B 2210 5K & 10K

MSS: SP44 CL. 150LB  AWWAC207

SABS: 1123 Table 1000/3 & Table 1600/3

Face to Face

ISO 5752, EN 558, MSS SP67, API 609 and DIN3202

Top Flange

ISO 5211

Different Types of Butterfly Valve

We can produce various types of butterfly valves according to your requirement and drawings.

Production Equipment

Packing & Delivery

Company Profile

LIKE VALVE (ZheJiang ) Co., Ltd locates in ZheJiang -next to the largest sea port in North -ZheJiang seaport; with more than 20 years experienced managing, manufacturing and quality control team; make efforts to produce high level quality valves of China.


Like valve has design research and development, manufacturing, marketing and aftersale services. We have the independent R&D center, advanced manufacturing technology and strictly implement the relevant international standards.

With advanced engineering design approaches, well-developed manufacturing equipment, testing verification facilities and strict QC as per ISO9001 certificate system, we “Like Valve” ensure that each part in every product we supply is in high quality and performance.

We specialize in in water valves: such as butterfly valve, gate valve, check valve, Hydraulic control valve, strainers, WRAS certified material avaiable; and oil and gas valves such as: gate valve, globe valve, ball valve, check valve, strainers etc, with API 6D certificate; also and other series products. We also customize valves in different materials, pressure, size and other products, according to customers requirement.

“Like Valve” products have exported to more than 18 countries: such as USA, Argentina, Brazil, Russia, Spain, UAE, Morroco, India, Bangladesh etc; widely used in water supply and drainage, construction, electricity, oil and gas pipe, petrochemical, metallurgical and other industries. Product ingenuity, high quality and reasonable price, trusted by the user.

Products Categories


Q1: What certificates can you offer?

Q2: Do you accept OEM?

Q3: Can i get a sample?
A:Yes, of course.

Q4:What is your MOQ?
A:1 pcs acceptable, more discount for larger quantity.

Q5:If all products will do test?
A:Sure, our products is tested piece by piece before delivery, no sampling test.

Q6: What is the payment term.
A:T/T, L/C, Credit Card, or other by discussion

Q7: What is delivery time?
A:Common standard commonly material valves in 7-20 days according to quantity

Q8: What is the warranty?
A:Standard valves warranty: 1 year after delivery.


Media: Water
Driving Mode: Manual
Connection Form: Wafer
Structure: Centre Sealing
Seal Form: Auto Sealed
Valve Stem: Normal
US$ 27/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

worm gearbox

Calculating Gear Ratio in a Worm Reducer

The gear ratio in a worm reducer is determined by the number of teeth on the worm wheel (also known as the worm gear) and the number of threads on the worm shaft. The gear ratio formula for a worm reducer is:

Gear Ratio = Number of Teeth on Worm Wheel / Number of Threads on Worm Shaft

For example, if the worm wheel has 60 teeth and the worm shaft has a single thread, the gear ratio would be 60:1.

It’s important to note that worm reducers have an inherent self-locking property due to the angle of the worm threads. As a result, the gear ratio also affects the mechanical advantage and the system’s ability to resist backdriving.

When calculating the gear ratio, ensure that the worm reducer is properly designed and that the gear ratio aligns with the desired mechanical characteristics for your application. Additionally, consider factors such as efficiency, load capacity, and speed limitations when selecting a gear ratio for a worm reducer.

worm gearbox

How to Calculate the Input and Output Speeds of a Worm Gearbox?

Calculating the input and output speeds of a worm gearbox involves understanding the gear ratio and the principles of gear reduction. Here’s how you can calculate these speeds:

  • Input Speed: The input speed (N1) is the speed of the driving gear, which is the worm gear in this case. It is usually provided by the manufacturer or can be measured directly.
  • Output Speed: The output speed (N2) is the speed of the driven gear, which is the worm wheel. To calculate the output speed, use the formula:

    N2 = N1 / (Z1 * i)

N2 = Output speed (rpm)
N1 = Input speed (rpm)
Z1 = Number of teeth on the worm gear
i = Gear ratio (ratio of the number of teeth on the worm gear to the number of threads on the worm)

It’s important to note that worm gearboxes are designed for gear reduction, which means that the output speed is lower than the input speed. Additionally, the efficiency of the gearbox, friction, and other factors can affect the actual output speed. Calculating the input and output speeds is crucial for understanding the performance and capabilities of the worm gearbox in a specific application.

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 1 Inch Butterfly Valve Gearbox Type From China   comer gearbox	China Standard 1 Inch Butterfly Valve Gearbox Type From China   comer gearbox
editor by CX 2023-10-16

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