Product Description
Stainless Steel ball valve
SPECIFICATION
Material: Stainless steel ,SS304/CF8, SS316/CF8M,WCB, and so on
British Standard : BS21.0
DIN Standard: DIN2999
American Standard:ASME B1.20.1
ISO Standard: ISO 228-1, ISO7/1
Size: 1/4”-4”
Certificate: ISO9001: 2000,CE
Pressure: 150LB, 1000WOG, PN64
Temperature Range: -20-250 degree C
Application:Applied to stainless steel pipeline system, water system, petrolum system etc
Connection Ends:Socket weld or Threaded: NPT, BSP, BSPT etc.
Suitable medium:Petroleum, chemical, power, gas, water, linepipe, heat exchanger, shipbuilding, construction, high&low pressure pipeline etc.
Features: 1.1000PSI/PN63
2.Full Port
3.Investment Casting
4.Blow out Proof Stem
5.Locking Device Handle(Option)
6.PED97/23/EC(CE0036) Approved
7.Casting Approved Ad2000-W0
8.Thread: ASME B1.20.1, BS21.0, DIN2999/259, ISO 228-1, JIS B5713, ISO 7/1
9.Inspection Testing: API598, EN 12266
Related Type:
| 1PC BALL VALVE | 2PC BALL VALVE | 2PC BALL VALVE LIGHT DUTY |
| 2PC BALL VALVE DIN3202 TYPE | 3PC BALL VALVE | 3PC BALL VALVE WITH DIRECT MOUNTING PAD |
| 3-WAY BALL VALVE ( L & T TYPE) |
2PC FLANGE BALL VALVE ( JIS, ANSI, DIN) | 3PC FLANGE VALL VALVE ( JIS & ANISI & DIN) |
| MINI BALL VALVE | BIBCOCK VALVE | GATE VALVE |
| GLOBE VALVE | SWING CHECK VALVE | 1PC SPRING VERTICAL CHECK VALVE |
| 2PC SPRING VERTICAL CHECK VALVE | 3PC SPRING VERTICAL CHECK VALVE | Y-STRAINER |
| If you need more ,please contact us. | ||
Customers’ drawings or designs are available.
| Sellable | Yes |
| Valve Type | Two-way, ON/OFF |
| Valve Style | Ball valve |
| Valve Size | 1/4”-4” |
| Valve Body Material | Stainless steel |
| Valve Temperature Range | -20°F to 400°F (-28.8°C to 204.4°C) |
| Valve Pressure Rating |
1,000 PSI C.W.P. (Cold Working Pressure), Saturated Steam 150 PSI |
| Application | Applied to stainless steel pipeline system, water system, petrolum system etc |
| Connection Ends | Socket weld or Threaded: NPT, BSP, BSPT etc. |
Company Information
HangZhou CZPT Pipeline Co.,Ltd is located in HangZhou city ZheJiang Province. Our main products are all kinds of stainless steel ball valve, globe valve, gate valve, strainer, quick coupling and fittings. The company introduces the advanced silicon sol lost wax precision casting process, well appointed casting equipments, high-precision CNC machines and machining center.
On the testing aspect,we have Swiss ARL spectrograph, Metallurgical Microscope, hardness tester, universal testing machine, three-dimensional and other test instrument. We have a complete production line from mold design to casting, machining, and surface treatment. On the technical aspect, we have strong technical R&D ability to meet customers’ special process demands, such as deep and complex cavity, accurate positioning etc.
Currently our major product material are 304, 304 L, 316, 316L, WCB, and our company produces a variety of precision casting and processing of finished parts by the standards of GB, ASTM, ANSI, BS, DIN, JIS, etc. The application is also ver broad, covering almost the entire machinery manufacturing and machining industry in this field.
Packing&Delivery
Packing
1.Polybag+Cartons+Pallet
2.Inner Carton Box, Outside Wooden Case/Pallet
3.Customized according to customer’s requirements.
Delivery Details
1.Normal delivery times is from 15 to 30 days after receiving the deposit
2. According to the quantities and specifications of each order
Shipping
1. Large Quantity Transport By Sea
2. Small Quantity or Sample Transport By Air
3. Inland Transport By Train
4. Shipping according to customers requirement
PORT: Xihu (West Lake) Dis.g Port ZheJiang , ZheJiang Port, ZheJiang Airport
ADVANTAGE
*We have been worked in this area for more than 15 years, and we know each market’s request, with a good replutation among our customers, we always persuit a high quality and best service and price .
*We also have a series of products such as: flanges, pipes, forged fittings, ball vavles and butterfly valves; And some hardware parts such: Post Anchors, Ground Screws, and some other wooden connectors.
OTHER PRODUCTS
FAQ
1. Q: How about trade terms ?
A: FOB, CFR, CIF will be accepted
2.What are your major products?
A:We mainly dealing with Pipe, Ball Valve, Post Spike etc.
3.Q:Can I get some samples?
A:We can offer the samples free but you need paid the freight cost by yourself.
4.Q: Can you supply the threaded treatment pipe Fittings end ?
A: Yes, We can supply threaded and coupled end treatment.
5.Q:What kind of payment is accepted?/ How about the payment terms?
A:T/T , L/C etc
6.Q:How about the delivery time?
A: New production:Need about 15-40 days after receiving your down payment or L/C.
Stock: After your down payment ,we will deliver within about 7days.
How to judge your valve is open or close?
One question that plagues both homeowners and professionals alike is: “Is my valve open or closed?” If you have a butterfly or ball valve, the direction of the handle indicates whether the valve is open or closed. If you have a stop or gate valve, it is harder to tell if your valve is open or closed because there are very little to no visual cues, meaning you have to rely on the amount of resistance to determine if your valve is truly closed. Below we’ll walk through 4 different types of valves, discussing the specifics of determining if the valve is closed or open.
What Exactly is a Valve?
A valve is a very simple mechanism. Valves can be found everywhere, in nature, life, and industry. Even your bathroom taps are valves. The dictionary definition provides a good starting point:
noun
any device for halting or controlling the flow of a liquid, gas, or other material through a passage, pipe, inlet, outlet, etc.
a hinged lid or other movable part that closes or modifies the passage in such a device.
Anatomy. a membranous fold or other structure that controls the flow of a fluid, as 1 that permits blood to flow in 1 direction only.
to provide with a means of controlling the flow of liquid, gas, etc, by inserting a valve.
verb (used with object), valved, valving.
Simply put, a valve is a way of controlling the flow of liquid or any media through obstructing its pathway.
Is My Ball Valve Open or Closed?
Ball valves are adeptly named because of the ball that sits inside the housing unit.
The ball has a hole through the center. This hole faces the flow of water when the valve is open. When the valve is closed, the solid side of the ball faces the flow, effectively blocking further forward movement of the liquid. Because of this design, ball valves are a type of shut-off valve, meaning they can only be used to stop and start flow; not regulatethe flow.
Ball valves are perhaps the easiest valve to see if they are open or closed. If the handle on top is parallel to the valve, it’s open. Likewise, if the handle is perpendicular to the top, the valve is closed.
Common places you might find a ball valve are in irrigation and in sites where you need to control water supply from 1 area to another.
How to Determine if Your Butterfly Valve is Open?
Butterfly valves differ from all the other valves in this post because not only can they be used as a shut-off valve, they can also be used as a regulatory valve. Inside the butterfly valve is a disc that rotates as you turn the handle. Butterfly valves can regulate flow by having the disc partway open.
Butterfly valves have a lever handle on the top that is similar to the ball valve. This handle both indicates if the flow is on or off,and can be used to turn the valve partway on by locking the disc in place. When the handle is parallel to the valve, it is closed, and when it is perpendicular to the valve, it is open.
Butterfly valves are suited for use in garden irrigation, and they are also commonly used in space-restrictive applications. They have a slender design that makes them ideal for tight-fitting spaces. Because of the disc inside, these valves are not the best to use in high-pressure applications as there will always be something in the way partially blocking the flow.
How to Know if Gate Valves are Open?
Gate valves are a type of isolation (or shut off) valve that are found on pipes that require the complete turn off or on of flow. Gate valves have a knob on top that when turned raises and lowers the gate inside, hence the name. To turn on the gate valve, you
turn the knob counter-clockwise, and you turn it clockwise to turn off the valve. There is no visual indicator to see if a gate valve is open or closed. It is, therefore, important to remember that when you are turning the knob you must stop when you hit resistance; to continue to try and turn the valve could potentially damage the gate, rendering your gate valve ineffective.The most common uses around the house for gate valves are for your main water shut off or, as you might see more frequently, the water spigot on the outside of your home.
Is My Stop Valve Closed?
The final valve on our list is a stop valve, which is another type of shut off valve. This valve looks similar to the gate valve, but it is more compact. It is also the valve that you might be the most familiar with. These valves are often used to connect appliances, like toilets and sinks, to the water supply line in your house. You twist the stop valve clockwise to turn the supply off and counter-clockwise to turn it on. Stop valves have a stem under their handle that rises and lowers as the valve is turned off and on. The stem is not visible when the stop valve is closed.
Final Tip: Know Your Type of Valve
At the end of the day, the most important part to knowing if a valve is open or closed is to know what type of valve you have. Ball and butterfly valves both have a lever handle on top that indicates if the valves are open or closed; whereas gate and stop valves bothrequire the turning of a knob and have no or harder to see visual cues on if they are openor closed.
Types of Screw Shafts
Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:
Machined screw shaft
The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
Acme screw
An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
Lead screw
A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.
Fully threaded screw
A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
Ball screw
The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.
