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032018/12

What happens to forged steel Y filter compared with cast steel? Forged steel Y-type filter has more outstanding properties than cast steel. Forged steel has higher quality than cast steel, can withstand large impact force and high temperature and high pressure. Its plasticity, toughness and other mechanical properties are also higher than cast steel Y-type filter. Therefore, it is the best in some important machinery and equipment and important complex working conditions. Y-type filters made of forged steel are used as filters. There will be no external leakage caused by handling collision and casting sand holes.

Pipeline equipped with Y-type filter of forged steel can be divided into discontinuous operation and continuous operation. During intermittent operation, cut-off valves are set before and after forged steel Y-type filters in order to clean the filters. During continuous operation, two sets of filters in parallel are required for permanent filters, and cut-off valves are installed before and after the filters (except for line-gap filters).
052018/12

Test Procedure for Cast Steel Globe Valve with Additional Back Pressure
截止閥的主要作用是在管道系統(tǒng)中調節(jié)流量的一種閥門。相比其他閥門，它開閉過程于密封面的摩擦力小，經(jīng)久耐用，而且結構簡單，維修和安裝都比較方便，所以有著很廣泛的應用。
The main function of globe valve is to regulate the flow of a valve in the pipeline system. Compared with other valves, it has less friction on the sealing surface during the opening and closing process, durable, simple structure, convenient maintenance and installation, so it has a very wide range of applications.
設計標準
Design standard
設計制造：鑄鋼截止閥按照BS 1873 and ASME B16.34
Design and Manufacture: Cast Steel Globe Valve According to BS 1873 and ASME B16.34

檢驗和試驗：API 598 法蘭連接：ASME B16.5
Inspection and test: API 598 flange connection: ASME B16.5
對焊端：ASME B16.25
Butt welding end: ASME B16.25
結構長度：ASME B16.10
Structural length: ASME B16.10
溫壓等級：ASME B16.34
Temperature and pressure grade: ASME B16.34
操作形式：
Form of operation:
一般情況下采用手輪驅動或者齒輪傳動方法，可根據(jù)用戶需要采用鏈輪傳動或者電動裝置。
Generally speaking, handwheel drive or gear drive method is adopted, and sprocket drive or electric device can be adopted according to user's needs.
052018/12

鍛鋼截止閥的優(yōu)點又有哪些呢？ What are the advantages of forged steel globe valves?

What are the advantages of forged steel globe valves?
Forged steel globe valve: refers to a forged steel valve whose opening and closing parts [discs] slide along the center line of the seat. The globe valve has a short opening and closing journey, and has a very reliable partition capacity. Moreover, the change of the valve seat opening is proportional to the journey, so it is very suitable for flow regulation. So the globe valve can be used for regulating.
Advantage:
First: In the opening and closing process, the friction between the opening and closing parts and the sealing surface is relatively small, so the globe valve is relatively wear-resistant.
2. Opening height is much smaller than gate valve.
Three: It is easier to maintain, because only the globe valve has one sealing surface.
Fourth: The high temperature resistance grade, because its filler is a mixture of graphite, so usually high temperature valves are used globe valves.
Disadvantages:
One: The flow resistance of globe valves is higher than that of most types of valves, because the direction of the medium changes when it passes through the valves.
062018/12
072018/12
082018/12

What are the unique characteristics and grease injection quantity of self-sealing forged steel valve

What are the unique characteristics and grease injection quantity of self-sealing forged steel valves? The unique characteristics of self-sealing forged steel valves, and to understand the self-sealing forged steel valve grease injection quantity, how many matters. The self-sealing forged steel valve is a gate valve made of refined forged steel. It is mainly used in pipelines of various systems in thermal power plants. It can control the flow of air, water, steam, oil, liquid metal and radioactive medium. Compared with other valves, forged steel valves have the characteristics of high temperature and high pressure resistance, unique self-sealing design, higher pressure and more reliable sealing.

The problem of grease injection quantity of self-sealing forged steel valve. After the greasing gun is refueled, the operator chooses the valve and the connecting mode of the low-temperature globe valve, and then carries out the greasing operation. There are two kinds of forged steel gate valves: on the one hand, less grease injection is insufficient, and the sealing surface accelerates wear due to lack of lubricant. On the other hand, excessive fat injection causes waste. Therefore, the sealing capacity should be calculated according to the size and type of the valve, and then a reasonable amount of grease should be injected.
112018/12
112018/12
132018/12
192018/12

Forged steel globe valve structure can reduce unnecessary losses oh!

Forged steel globe valve structure can reduce unnecessary losses oh! The most obvious advantage is that in the process of opening and closing, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wearable. The opening height is generally only one fourth of the diameter of the seat passage, so it is much smaller than the gate valve. Usually there is only one sealing surface on the valve body and disc, so the manufacturing process is better and easy to maintain. Nominal pressure or pressure level: PN1.0-16.0 MPa, ANSI CLA...

Forged steel globe valve includes valve body, valve cover and stem. The product valve cover is installed on the upper part of the valve body. The lower part of the product valve stem is placed in the valve body and is equipped with a valve ball at the lower end of the valve stem. The upper part of the valve stem passes through the valve cover and is equipped with a handwheel at the upper end of the valve stem. The lower end of the product stem is equipped with a valve ball fixing sleeve through threads. The diameter of the lower part of the product valve ball fixing sleeve is smaller than that of the valve ball. Diameter, product valve ball is placed in the inner cavity of the ball fixing sleeve. When the valve ball is damaged, the valve body and cover are separated first, and then the ball fixing sleeve on the stem can be removed to replace the valve ball conveniently without replacing the stem together, thus reducing unnecessary losses.

The most obvious advantage is that in the process of opening and closing, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wearable.

The opening height is generally only one fourth of the diameter of the seat passage, so it is much smaller than the gate valve.

Usually there is only one sealing surface on the valve body and disc, so the manufacturing process is better and easy to maintain. Nominal pressure or pressure level: PN1.0-16.0 MPa, ANSI CLASS 150-900, JIS10-20K nominal diameter or caliber: DN10-500, NPS 1/2-36 "connection mode: flange, butt welding, threads and other applicable temperatures: -196 ~700 C driving mode: manual, bevel gear transmission, pneumatic, electric, hydraulic, pneumatic, electro-hydraulic, electro-hydraulic valve body materials: WCB, ZG1189Ti, ZG118Ni12Mo2Ti CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti.

Different materials can be used in water, steam, oil, nitric acid, acetic acid, oxidizing media, urea and other media.
202018/12

Can the structure of forged steel globe valves reduce unnecessary homeopathy?

The most obvious advantage is that in the process of opening and closing, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wearable. The opening height is generally only one fourth of the diameter of the seat passage, so it is much smaller than the gate valve. Usually there is only one sealing surface on the valve body and disc, so the manufacturing process is better and easy to maintain. Nominal pressure or pressure level: PN1.0-16.0 MPa, ANSI CLA...

鍛鋼截止閥包括閥體、閥蓋及閥桿,產(chǎn)品閥蓋安裝于閥體上部,產(chǎn)品閥桿的下部分置于閥體內并在閥桿的下端部裝設有閥球,閥桿的上部分穿過閥蓋并在閥桿的上端部裝設有手輪,產(chǎn)品閥桿的下端部通過螺紋裝設有閥球固定套,產(chǎn)品閥球固定套的下口部直徑小于閥球的直徑,產(chǎn)品閥球置于閥球固定套的內腔中。當閥球損壞時,先將閥體與閥蓋分離,再取下閥桿上的閥球固定套就可以方便的更換閥球,無需將閥桿一同更換,減少了不必要的損失。
Forged steel globe valve includes valve body, valve cover and stem. The product valve cover is installed on the upper part of the valve body. The lower part of the product valve stem is placed in the valve body and is equipped with a valve ball at the lower end of the valve stem. The upper part of the valve stem passes through the valve cover and is equipped with a handwheel at the upper end of the valve stem. The lower end of the product stem is equipped with a valve ball fixing sleeve through threads. The diameter of the lower part of the product valve ball fixing sleeve is smaller than that of the valve ball. Diameter, product valve ball is placed in the inner cavity of the ball fixing sleeve. When the valve ball is damaged, the valve body and cover are separated first, and then the ball fixing sleeve on the stem can be removed to replace the valve ball conveniently without replacing the stem together, thus reducing unnecessary losses.

最明顯的優(yōu)點是：在開啟和關閉過程中，由于閥瓣于閥體密封面間的摩擦力比閘閥小，因而耐磨。
The most obvious advantage is that in the process of opening and closing, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wearable.

開啟高度一般僅為閥座通道直徑的1/4，因此比閘閥小的多。
The opening height is generally only one fourth of the diameter of the seat passage, so it is much smaller than the gate valve.

通常在閥體和閥瓣上只有一個密封面，因而制造工藝性比較好，便于維修。公稱壓力或壓力級：PN1.0-16.0MPa、ANSI CLASS 150-900、JIS10-20K 公稱通徑或口徑：DN10～500、NPS 1/2 ～36" 連接方式：法蘭、對焊、螺紋等適用溫度：-196℃～700℃ 驅動方式：手動、傘齒輪傳動、氣動、電動、液動、氣液聯(lián)動、電液聯(lián)動閥體材料：WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8(304)、CF3(304L)、CF8M(316)、CF3M(316L)、Ti。
Usually there is only one sealing surface on the valve body and disc, so the manufacturing process is better and easy to maintain. Nominal pressure or pressure level: PN1.0-16.0 MPa, ANSI CLASS 150-900, JIS10-20K nominal diameter or caliber: DN10-500, NPS 1/2-36 "connection mode: flange, butt welding, threads and other applicable temperatures: -196 ~700 C driving mode: manual, bevel gear transmission, pneumatic, electric, hydraulic, pneumatic, electro-hydraulic, electro-hydraulic valve body materials: WCB, ZG1189Ti, ZG118Ni12Mo2Ti CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti.

選用不同的材質，可分別適用于水、蒸汽、油品、硝酸、醋酸、氧化性介質、尿素等多種介質。
Different materials can be used in water, steam, oil, nitric acid, acetic acid, oxidizing media, urea and other media.
212018/12

What are the selection requirements for Forged Steel globe valves?

What are the selection requirements for Forged Steel globe valves? For low pressure check valves below DN50mm, butterfly check valves, vertical lift check valves and diaphragm check valves should be selected. 止回閥是指依靠介質本身流動而自動開、閉閥瓣，用來防止介質倒流的閥門，又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動閥門，其主要作用是防止介質倒流、防止泵及驅動電動機反轉，以及容器介質的泄放。止回閥還可用于給其中的壓力可能升至超過系統(tǒng)壓的輔助系統(tǒng)提供補給的管路上。止回閥主要可分為旋啟式止回閥（依重心旋轉）與升降式止回閥（沿軸線移動）。 Check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent medium backflow, also known as check valve, one-way valve, counterflow valve, and back pressure valve. Check valve is an automatic valve. Its main function is to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can also be used in pipelines to supply auxiliary systems where pressure may rise above system pressure. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis). 對于止回閥的選用要求，必須知道以下幾點： For the selection requirements of check valves, the following points must be known: 對于DN50mm以下的高中壓止回閥，宜選用立式升降止回閥和直通式升降止回閥； For high and medium pressure check valves below DN50mm, vertical lift check valves and through lift check valves should be selected. 對于DN50mm以下的低壓止回閥，宜選用蝶式止回閥、立式升降止回閥和隔膜式止回閥； For low pressure check valves below DN50mm, butterfly check valves, vertical lift check valves and diaphragm check valves should be selected. 對于DN大于50mm、小于600mm的高中壓止回閥，宜選用旋啟式止回閥； For high and medium pressure check valves with DN greater than 50 mm and less than 600 mm, swing check valves should be selected. 對于DN大于200mm、小于1200mm的中低壓止回閥，宜選用無磨損球形止回閥； For medium and low pressure check valves with DN greater than 200 mm and less than 1200 mm, wear-free spherical check valves should be selected. 對于DN大于50mm、小于2000mm的低壓止回閥，伊選用蝶式止回閥和隔膜式止回閥； For low pressure check valves with DN greater than 50 mm and less than 2000 mm, butterfly check valves and diaphragm check valves are selected. 對于要求關閉時水擊沖擊比較小或無水擊的管路，宜選用緩閉式旋啟止回閥和緩閉式蝶形止回閥。 For pipelines requiring less water hammer or no water hammer when closing, slow-closing swing check valve and slow-closing butterfly check valve should be selected.
262018/12

What are the characteristics of forged steel globe valves in installation?

1. The installation characteristics of forged steel globe valves are briefly introduced. 1. The installation position, height, import and export direction must meet the design requirements, and the connection should be firm and tight.
2. All kinds of manual valves installed on insulation pipelines shall not have downward handles.
3. The appearance of forged steel gate valve must be inspected before installation. The sound of the valve should conform to the current national standard "General Valve Mark" GB 12220. For the working pressure uuuuuuuuuuuu

Brief Introduction to the Installation Characteristics of Forged Steel Gate Valve
1. Installation location, height, import and export direction must meet the design requirements, and the connection should be firm and tight.
2. All kinds of manual valves installed on insulation pipelines shall not have downward handles.
3. The appearance of forged steel gate valve must be checked before installation. The nameplate of the valve should conform to the current national standard GB 12220. For valves with working pressure greater than 1.0 MPa and cutting off effect on main pipe, strength and tightness test should be carried out before installation, and the valves can be used only after they are qualified. In the strength test, the test pressure is 1.5 times of the nominal pressure, and the duration is not less than 5 minutes. The valve shell and packing should be qualified without leakage. The test pressure is 1.1 times of the nominal pressure in the tightness test, and the test pressure should meet the requirements of GB 50243 standard for the duration of the test, with no leakage on the sealing surface of the gate as the qualification.

What is gate valve
The gate valve's opening and closing part is the gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and closed, and can not be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valves form wedges, and the wedge angle varies with the valve parameters. The driving modes of gate valves are classified as manual gate valves, pneumatic gate valves and electric gate valves. The materials of gate valves are cast iron gate valves, ductile iron gate valves, stainless steel gate valves, forged steel gate valves, etc.
282018/12

How can the sealing structure of forged steel globe valve see its simplicity?

How can the sealing structure of forged steel globe valve see its simplicity? Fluorine lined globe valve belongs to forced sealing valve, so when the valve closes, pressure must be exerted on the disc to force the sealing surface not to leak. When the medium enters valve 6 from below the disc, the resistance to be overcome by the operating force is the friction between the stem and 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, so the diameter of the stem is larger, otherwise the stem top will occur.

The sealing structure of fluorine-lined globe valve includes cover, cap and fluorine-lined stem. The fluorine-lined stem penetrates the cap and the cap into the valve body. The inner side of the product cap is lined with a sealing chamber. The product lining, cap and fluorine-lined stem are surrounded by a sealing chamber. The product's sealing chamber is filled with a sealing ring. The inner ring of the product's sealing ring is provided with an inner O-ring, and the outer ring of the product's sealing ring is set up. Outer O-ring. In the sealing structure of the fluorine lined globe valve, there are fewer installations in the sealing chamber, the processing is easier and the structure is simpler.
Fluorine lined globe valve belongs to forced sealing valve, so when the valve closes, pressure must be exerted on the disc to force the sealing surface not to leak. When the medium enters valve 6 from below the disc, the resistance to be overcome by the operating force is the friction between the stem and 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, so the diameter of the valve stem is larger, otherwise the failure of the top bending of the valve stem will occur. After the emergence of self-sealing valve, the medium flow direction of fluorine-lined globe valve changes from above the valve disc to enter the valve chamber. Under the action of medium pressure, the force of closing the valve is small, while the force of opening the valve is large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of medium, this form of valve is also more tight.
122019/01

What are the usage and preservation of forged steel gate valves and their convenience?

What are the usage and preservation of forged steel gate valves and their convenience? The direct sealing of forged steel gate valve is the main function of internal and external threads. Usually lead oil, linen and PTFE raw materials are taped inside to ensure that the joint is sealed. Among them, PTFE raw material has strong corrosion resistance and excellent sealing effect. Its use and preservation are extremely convenient. When it is removed, it can be removed completely, because it is a non-sticky film, much more convenient than lead oil and linen.

The grease injection operation of self-sealed forged steel gate valve needs to pay attention to the change of pressure. The grease injection pressure of self-sealed forged steel gate valve varies regularly in peak and valley with semi-free floating ball steam trap. The pressure is too low, the seal leaks or the safety valve fails, the pressure is too high, and the manufacturer of the grease injection valve is blocked.

Sealing inner grease hardening or sealing ring and valve ball, valve plate lock.

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