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A claw hammer is a type of hammer. Generally, one end of a claw hammer is round, the other end is flat and bent downward, and the V mouth is opened, the purpose is to lift the nail. The claw hammer uses the principle of leverage and is a labor-saving lever.

Type of Angle Hammer

Divided by handle: wooden handle, steel tube handle, fiber handle, etc .;

Divided by hammer head: There are American and European points.

The principle of leverage:

When using a lever, in order to save effort, you should use a lever with a power arm longer than the resistance arm; if you want to save distance, you should use a lever with a power arm shorter than the resistance arm. Therefore, the use of leverage can save effort and distance. However, if you want to save effort, you must move more distance; if you want to move less, you must work harder. It is impossible to achieve this with less effort and less travel distance. It is from these axioms that on the basis of the "center of gravity" theory, Archimedes discovered the principle of leverage, that is, "the distance between the fulcrum and the weight is inversely proportional to the weight when the dual objects are balanced."

Claw Hammer

The fulcrum of the lever does not have to be in the middle. A system that meets the following three points is basically a lever: a fulcrum, a force application point, and a force application point.

The formula is written as follows: power × power arm = resistance × resistance arm, that is, F1 × l1 = F2 × l2 This is a lever.

Power arm extension

There are also labor-saving levers and labor-intensive levers, both of which have different functions. For example, there is a pump with a foot or a juicer that is pressed by hand, which is a labor-saving lever (force arm> force distance); but we have to push a larger distance, and the force end has only small actions. There is also a laborious lever. For example, a roadside crane, the hook for fishing is at the tip of the whole rod, the fulcrum is the fulcrum, and the oil pressure machine is in the middle (torque> force arm). This is a laborious lever. Distance, the tip hook will move a considerable distance.

Both types of levers are useful, but the place to use is to evaluate whether to save effort or save range of motion. There is another kind of thing called wheel axle, which can also be regarded as a kind of lever application, but the performance may sometimes need to be added to the calculation of rotation.

The ancient Greek scientist Archimedes has a famous saying that has spread throughout the ages: "If you give me a fulcrum, you can pry up the earth" This sentence is not only an inspiring aphorism, but also has a strict scientific basis.

We are adjustable stainless steel wrench supplier. Our company provides high quality claw hammers. If you have any needs for our products, please feel free to contact us.

API Flange Cast Steel Swing Check Valve

API Flange Swing Check Valve Supplier

Introduction to Swing Check Valve

The swing check valve is also called a check valve or check valve, its role is to prevent the medium in the pipeline from flowing backward. The opening and closing part is opened or closed by the flow of the medium and the force to prevent the medium from flowing backward is called a check valve. The non-return valve is an automatic valve. It is mainly used for pipelines where the medium flows in one direction. It only allows the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline.

Application of valve:

The swing check valve is suitable for nominal pressure PN1.0MPa ~ 42.0MPa, Class150-2500; nominal diameter DN15 ~ 1200mm, NPS1 / 2 ~ 48; working temperature - 196 ~ 540 ℃ on various pipelines to prevent Media is flowing backward. By using different materials (WCB, CF8 (M), CF3 (M), 1Gr5Mo, 15CrMo1V, it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media, and urea. It is mainly used for petroleum, chemical, pharmaceutical, fertilizer, power, and other pipelines.

The swing check valve adopts a built-in swing-arm swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the gasket and seal ring in the middle flange, the whole There is no leakage point, preventing the possibility of leakage of the valve. Swing check valve rocker arm and valve disc adopt a spherical connection structure, so that the valve disc has a certain degree of freedom within a 360-degree range, with appropriate micro-position compensation. Suitable for clean media, not suitable for media with solid particles and high viscosity.

Structural features of the swing check valve:

1. The structure length is short, and its structure length is only 1/4 ~ 1/8 of the traditional flange check valve

2. small size, lightweight, its weight is only 1/4 ~ 1/20 of the traditional flange check valve

3. The valve flap closes quickly and the water hammer pressure is small

4. Both horizontal and vertical pipes can be used, which is easy to install

5. The flow channel is unobstructed and the fluid resistance is small

6. sensitive action, good sealing performance

7. Short stroke of the valve and small impact force when the closing valve

8. the overall structure, simple and compact, beautiful appearance

9.Long service life and high reliability

The working principle of the swing check valve:

Through the up and down movement of the cylinder plug, the valve flap is opened and closed quickly to achieve the sealing surface

A structural form: single swing flap

B drive method: butt welding connection

C connection form: butt welding connection

The opening and closing of the D valve are controlled by a pneumatic device to speed up the opening and closing of the valve.

Maintenance and maintenance of swing check valve：

1 The valve should be stored in a dry and ventilated room to prevent moisture, rain, and rust.

2 The storage and opening and closing parts should be in the closing device during storage and transportation.

The valve flap should be fixed to open, and the inner ports at both ends of the diameter should be blocked with foam boards. The ports must be plugged tightly to prevent dust and rust, to keep the passage clean and the end surface flat. And anti-collision; the valve should be stable when placed,

The pneumatic drives are facing up and must not be squeezed against each other.

3 It should be checked regularly when it is left for a long time. Every three months, check the dirt and rust on the two channels, the sealing surface, and the protection of the welding joint. After wiping the dirt and rust, apply anti-rust oil to protect it.

The swing check valve can be installed horizontally or vertically. The swing check valve flap rotates around the axis of rotation. Its fluid resistance is generally smaller than that of a lift check valve. It is suitable for large-caliber occasions, and its installation position is not affected. Restricted, usually installed in horizontal pipelines, it is suitable for occasions with larger calibers. According to the number of valve flaps, it can be divided into three types: single-lobed revolving, double-lobed, and multi-lobed. A single flap swing check valve is generally used on the occasion of medium caliber. When large-diameter pipelines use single flap swing check valves, in order to reduce water hammer pressure, it is best to use slow-closing check valves that reduce water hammer pressure. A double flap swing check valve is suitable for large and medium diameter pipelines. Wafer double flap swing check valve has a small structure and lightweight and is a fast check valve. The multi-flap swing check valve is suitable for large diameter pipelines. 

XINTAI VALVE's swing check valve is widely used in chemical, metallurgy, pharmaceutical and other fields. Welcome to contact us!

A check valve, clack valve, non-return valve, reflux valve, retention valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering, and other industries.

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1. Non-sparking safety tools bring safety guarantee to our staff working in those flammable, explosive and corrosive workplaces, which makes our social security more perfect and ours Staff worked more at ease.

After our non-sparking tools are used in our daily work, there should be a proper maintenance phase, which is very critical to the life of the tools, because if the maintenance of non-sparking tools is not proper, our tools will not last long. To serve us. First of all, we must store the tools in a dry place, this is to prevent some parts of the work from being damaged.

In our daily work, the surface attachment of the tool should be treated after 20 consecutive taps, and then cleaned before use. Do not use it continuously, so as to prevent the tool from heating because of prolonged friction. May damage our tool products.

2. After use, clean up dirt and deposits on the surface and store in a dry and safe place.

3. Percussion tool products must not be continuously struck. There should be appropriate intervals more than ten times. At the same time, the debris on the product parts must be removed in time before continuing to use.

4. The labor saving wrench cannot be used at excessive force, nor can it be extended with a sleeve or other metal rods, or a hammer (except for hitting the wrench) to turn the fastener. .

5. The cutting edge tools should be placed in the water tank to lightly contact the grinding wheel for sharpening. Do not use excessive force and contact the grinding wheel for a long time.

6. In the actual operation of smashing tools, the debris on site and the corroded oxides on the working surface must be removed to prevent third parties from striking.

According to the above performance and use, it shows that aluminum-copper alloy is more suitable for normal pressure equipment and environments with less stringent explosion-proof conditions (such as gas stations, small oil depots, etc.) during normal use. The applicability of beryllium copper alloy explosion-proof tools (such as oil refineries, gas transfer stations, gas production plants, drilling teams, etc.).

Various products should be cleaned from the surface before use, according to the instructions of steel tools

Labor Saving Wrench

API Flange Stainless Steel Globe Valve

Stainless Steel Thread Globe Valve

Introduction to Globe Control Valve

The globe control valve is a compulsory sealed valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface to not leak. When the medium enters the valve 6 from below the valve disc, the resistance to be overcome by the operating force is the frictional force of the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve. The diameter of the stem must be large, otherwise, the failure of the valve top bend will occur. In recent years, since the emergence of self-sealing valves, the medium flow direction of the globe control valve has changed from above the valve disc into the valve cavity. At this time, under the action of the medium pressure, the force to close the valve is small, and the force to open the valve is large. The diameter of the rod can be reduced accordingly. At the same time, this type of valve is also tight under the action of the medium. China's valve has stipulated that the flow direction of the globe control valve will be used from top to bottom.

When the globe control valve is opened, when the opening height of the valve disc is 25% to 30% of the nominal diameter, the flow has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the shut-off valve should be determined by the stroke of the valve disc. This type of valve should generally be installed horizontally in the pipeline.

Globe control valve advantages:

1. Simple structure, easy to manufacture and maintain.

2. Small working stroke and short opening and closing time.

3. Good sealing performance, small friction between sealing surfaces and long life.

Disadvantages of globe control valve:

1. The fluid resistance is large, and the force required when opening and closing is large.

2. Not suitable for media with particles, large viscosity and easy to coke.

3. Poor regulation performance.

The type of flange globe control valve is divided into external thread type and internal thread type according to the position of the stem thread. According to the flow direction of the medium, there are straight-through, direct-current and angular. The shut-off valve is divided into sealing forms, and it has a packing-sealed shut-off valve and a bellows-sealed shut-off valve.

Structure of the globe control valve:

The structure of the XINTAI globe control valve body has straight-through, DC and right-angle. Straight-through is the most common structure, but its fluid resistance is greatest. DC fluid has low resistance and is mostly used for fluids with solid particles or high viscosity. Right-angle valve bodies are mostly forged, which is suitable for flange globe valves with the smaller passage and higher pressure.

A globe valve, different from the ball valve, is a type of valve used for regulating flow in a pipeline, consisting of a movable disk-type element and a stationary ring seat in a generally spherical body.

Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering, and other industries.

Tool Set-10pcs manufacturer will share with you: Internationally referred to as safety tools and non-sparking tools Domestically referred to as explosion-proof tools, explosion-proof tools produced, sold and distributed in China can be divided into two categories: Aluminum copper alloy (commonly known as aluminum bronze) explosion-proof tools and beryllium copper alloy (commonly known as beryllium bronze) explosion-proof tools. Mainly used in petroleum refining and petrochemical industry, coal mine, oil field, natural gas chemical industry, gunpowder industry, chemical fiber industry, paint industry, fertilizer industry, various pharmaceutical industries. Oil tankers and LPG vehicles, airplanes, warehouses operating flammable and explosive materials, electrolytic workshops, telecommunication machine assembly workshops, places that require tools not rusty, wear-resistant and anti-magnetic.

Non Sparking Safety Tools

What are the materials of explosion-proof tools?

Explosion-proof tools are made of beryllium bronze and aluminum bronze. Raw materials of beryllium bronze and aluminum bronze do not spark during impact or friction. When the tools and objects are rubbed or impacted, the heat generated in a short time is absorbed and conducted. The reason is that because copper is relatively soft, it has good concession during friction and impact, and it is not easy to produce tiny metal particles. Therefore, we can hardly see sparks, which is very suitable for manufacturing explosive, flammable, strong magnetic and corrosive. Safety tools used in occasions.

1. Beryllium bronze: Beryllium bronze is a steel abutment gold with beryllium as the basic alloy element, and its beryllium content is 1-2.5%. Contains trace amounts of cobalt, magnesium, iron and other trace elements. When beryllium bronze is subjected to high-speed impact or high-speed friction, its mechanical energy is converted into thermal energy when it is applied to the surface of the object, and the surface temperature suddenly rises. However, due to its high electrical conductivity and thermal conductivity, the heat on the work surface is quickly transferred to other parts of the workpiece, and the heat on the work surface is drastically reduced. Some particles detached from the workpiece under impact or friction have a temperature of Less than the temperature of the ignition source. The compounds of beryllium bronze metals are relatively stable and have a high melting point and are not easy to violently oxidize. During high-speed impact or friction, although the temperature of the applied surface or some of the detached particles has risen, none of them can react violently with oxygen and other flammable gases, forming an ignition source. This material is widely used in the manufacture of important parts and explosion-proof tools in some special occasions.

2. J892 copper alloy: J892 copper alloy explosion-proof tools are suitable for various types of explosive gas occasions. In general production, the hardness of J892 copper alloy material is higher than that of beryllium bronze material, which is closer to the hardness of steel tool products. At present, the toughness of J892 copper alloy can not reach the level of steel tools, so J892 copper alloy explosion-proof tools cannot be used for overloading, nor can a sleeve be added to the wrench to extend the arm or use a hammer on the handle. operation.

3. Aluminum bronze: There are two commonly used aluminum bronzes: first, when the Al content is less than 9.4%, the metallurgical phase is a dendritic single α phase solid solution (solid solution of Al in Cu), and the second is when the Al content is 1.8-9.4 At%, its organization is: α + β1 + a small amount of α + γ2. Its thermal conductivity is very good. Most of the heat generated during friction and collision with other objects is absorbed by the tool and dissipated. The heat generated by the ground particles is low, and it will not cause the explosion of the mixture of air and combustible substances.

From processing a small hammer, it can now produce more than 1,000 series and more than 10,000 specifications of explosion-proof tools. The products are sold to more than 110 countries and regions. The 37-year-old Hebei Zhongbo Explosion-proof Tools Group Co., Ltd. Product quality and honest and trustworthy quality have been rated as "good faith manufacturer" by the All-China Federation of Industry and Commerce Hardware and Electrical Chamber of Commerce for 17 consecutive years. If you are interested in our non sparking safety tools, please feel free to contact us.

API FLANGE STAINLESS STEEL GATE VALVE

Introduction to Stainless Steel Gate Valve

The opening and closing part of the stainless steel gate valve is a gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used gate valves form a wedge shape. The wedge angle varies with the valve parameters, usually 50, and 2°52 'when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its processability and make up for the deviation of the sealing surface angle during processing. The plate is called a spring gate. Stainless steel gate valve material is divided into a 304 stainless steel gate valve, 316 stainless steel gate valve, 321 stainless steel gate valve. The expression method is Z41H-16P.

Types of stainless steel gate valves: Wedge gate valves and parallel gate valves can be divided according to the sealing surface configuration. Wedge gate valves can also be divided into a single gate, double gate and flexible gate; parallel gate valves Can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: bright stem gate valve and dark stem gate valve.

Features of JIS Flange Stainless Steel Gate Valve:

1. The exquisite selection of materials, in accordance with relevant standards at home and abroad, high overall quality of materials.

2. Meet the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance, and beautiful appearance.

3. The sealing pairing is advanced and reasonable. The sealing surfaces of the gate and valve seat are made of Stellite cobalt-based hard alloy with different hardness. 

4. Good anti-scratch performance and long life.

5. The valve stem undergoes quenching and tempering and surface nitriding treatment, and has good corrosion resistance, abrasion resistance and wear resistance.

6. It adopts a wedge-type elastic brake plate structure. Thrust bearings are set in the middle and large calibers. The friction force is small and it is equipped with a manual impact.

Advantage of stainless steel gate valve:

1. The fluid resistance is small, and the sealing surface is less brushed and eroded by the medium.

2. Less effort to open and close.

3. the medium flow direction is not restricted, does not disturb the flow, does not reduce the pressure.

4. Simple shape, short structure length, good manufacturing process, and wide application range.

A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so stainless steel gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can be parallel but are most commonly wedge-shaped.

Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering, and other industries.

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API FLANGE STAINLESS STEEL BALL VALVE

Introduction to Stainless Steel Ball Valve

The stainless steel ball valve can be closed tightly with only 90 degrees of rotation and small torque. The completely equal valve body cavity provides low resistance, straight flow channel for the medium. The main feature of the ball valve is its compact structure and easy operation and maintenance. The stainless steel ball valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. The ball valve body can be integrated or combined. This type of valve should generally be installed horizontally in the pipeline. 

Stainless steel ball valve classification: stainless steel pneumatic ball valve, stainless steel electric ball valve, stainless steel manual ball valve. Stainless steel ball valve material is divided into 304,316,321 stainless steel ball valves.

Advantages of stainless steel ball valve:

1. The fluid resistance is small, and its resistance coefficient is equal to the pipe length of the same length.

2. Simple structure, small size, and lightweight.

3. It is tight and reliable. The sealing surface material of the ball valve is widely used in plastic and has good sealing performance. It has also been widely used in vacuum systems.

4. Easy operation, fast opening, and closing, only need to rotate 90 ° from fully open to fully closed, which is convenient for long-distance control.

5. Easy maintenance, the simple structure of the ball valve, the seal ring is usually movable, and it is more convenient to disassemble and replace.

6. When fully open or fully closed, the sealing surfaces of the ball and the valve seat are isolated from the medium. When the medium passes through, it will not cause erosion of the stainless steel valve sealing surface.

7. A wide range of applications, from small diameter to several millimeters, large to several meters, can be applied from high vacuum to high pressure.

Ball valves have been widely used in petroleum, chemical, power generation, papermaking, atomic energy, aviation, rocket, and other departments, as well as people's daily life.

A ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball to control flow through it. It is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valve's status

Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering, and other industries.

XINTAI VALVE cordially welcomes our old friends and new customers to contact us for further cooperation.

visit our website:

http://www.xintaivalves.com/api-flange-ball-valve/api-flange-stainless-steel-ball-valve.html

API Flange Carbon steel Ball Valve

Brief introduction of Flange Ball Valve

The flange ball valve refers to a ball valve made of the flange material. The ball valve is a widely used new type of valve. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be operated with a 90-degree rotation and a small turning torque to close tightly.

Application of flange ball valve:

1. The flange ball valve has the action of rotating 90 degrees, the cock body is a ball.

2. There are circular through holes or channels passing through its axis.

3. Flanged ball valves are most suitable for switching and shut-off valves. The development has designed the ball valve so that it can be used for throttling and flow control, such as V-type ball valves.

Flange ball valve function: mainly used to switch, cut off or connect the medium in the pipeline, can also be used for fluid regulation and control.

Applicable medium: water, solvent, acid, natural gas, oxygen, hydrogen peroxide, methane and ethylene

Flange ball valve applications: chemical, petrochemical, petroleum, paper, mining, power, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronic industry, urban construction, and other fields.

Flanged ball valves are also suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane, and ethylene, etc., and are widely used in various industries. The ball valve body can be integral or combined.

Main features of flange ball valve:

The main features of the flanged ball valve are its compact structure, reliable sealing, simple structure, and easy maintenance. The sealing surface and the spherical surface are often in a closed state, which is not easy to be eroded by the medium and is easy to operate and maintain. It is suitable for water, solvents, acids, and natural gas. General working medium.

XINTAI VALVE is a professional and excellent flange ball valve manufacturer, welcome to purchase！

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