Ball valves manufacturer
As a Chinese ball valve supplier with a variety of international certifications and praise from customers, we produce high performance ball valve series products and also customized solutions to meet valve operating conditions and manufacturing standards in different sectors.
Precautions for purchasing ball valves
When purchasing, customers often ask us how to choose the model of the ball valve? Many customers only send general models, but there are no requirements for the material, pressure, temperature, etc. of the ball valve. When the goods are received, they find that the ball valve is not easy to use. In fact, the selection of the ball valve has a great relationship with the medium, pressure and temperature.
More ball valve related articles
Why choose XinHui ball valve?
Small fluid resistance
A full-bore ball valve has almost no flow resistance. It will not get stuck when working (when there is no lubricant), and can be used in industries with low flow resistance such as corrosive media and low-boiling liquids.
Wide range of applications
Our ball valve. It has a wide range of applications, with diameters ranging from small to several millimeters to several meters, from high vacuum to high pressure, and can be used in different industries and various harsh valve conditions.
Our ball valves are also easier to use than gate valves, have a lower failure rate, and last longer.
Strong sealing performance
The sealing surface of the ball valve produced by us has good airtightness and has been widely used in vacuum systems. It has also been widely used in ultrafiltration devices.
Easy to operate
Our ball valve opens and closes quickly, and only needs to rotate 90° from full opening to closing, which is conducive to long-distance operation.
Easy to maintain
The structure of the ball valve is simple, the sealing ring is generally movable, and the disassembly and replacement are very convenient.
We are not only a manufacturer of valves, but also a disseminator of industry knowledge
All You Need to Know About Ball Valves
what is a ball valve
What is a ball valve used for?
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 rotate 90 degrees and a small torque to close tightly. Therefore, the ball valve is most suitable for use as an on-off shut-off valve. In addition, the multi-port ball valve can not only flexibly control the confluence, diversion and switching of the flow direction of the medium on the pipeline, but also can close any channel and connect the other two channels.
how does a ball valve work
ball valve structure
The ball valve is mainly composed of valve core, valve body base, valve body, sealing packing, valve stem, valve stem guide pin, valve cover, hand wheel, etc. If there is a spiral groove on the stem of the fixed ball valve, the stem guide pin can control the up and down movement and horizontal rotation of the valve core, but cannot move horizontally. , When the valve is closed, the side wall of the valve core cooperates with the base of the valve body to play a sealing role. The valve body seat is located on one side of the valve plug. When the valve is closed, it is pressurized by the medium and moves to the valve core, and the valve core and the valve core are tightly fitted to prevent the medium from leaking.
How to Install a Ball Valve
The first is the preparation before installation. It is necessary to carefully check whether the material, pressure, diameter, thread type and other marks of the valve meet the requirements of the working conditions. It is necessary to rinse the foreign matter in the pipeline, otherwise the sealing surface will be damaged and the sealing performance of the valve will be reduced. . Second, the choice of installation location, the valve is generally installed horizontally, it is best to choose a location that is convenient for operation and maintenance. Third, use raw tape or apply thread tightening glue for auxiliary sealing during installation. Special attention is that when tightening, you can only twist the wrench at the hexagonal or octagonal position closest to the valve port. Do not use other components of the valve to tighten, otherwise the valve will be seriously damaged. Fourth, screw the pipe and the valve together evenly during the installation process to ensure that the valve and the pipe are in the same line, so as to prevent the valve from leaking due to the stress of the pipe. Fifth, the flow direction requirements, such as the two-way seal of our company’s ball valve, have no flow direction requirements, and the installation direction can be adjusted according to the site space and operating habits. Doing these five points can basically ensure the installation of the valve.
Ball valve application scenarios
OEM & ODM XinHui Ball Valves Applications
Q41F4 F46 Fluorine lined ball valve - recommended for chemical industry
The fluorine-lined ball valve has small fluid resistance, smooth inner wall and smooth flow passage, which is the smallest fluid resistance among all valves. Using special molding process, the lining material is lined on the inner wall of the valve shell, which can resist the corrosion of strong acid and alkali medium. The lining spherical surface is combined with the PTFE valve seat, which has good sealing performance and achieves zero leakage.
Ash unloading ball valve (coal injection ball valve) - recommended for coal chemical industry
The ash discharge ball valve is often used to cut off or connect the medium in the mining, refining and processing of oil, natural gas, coal and ore and pipeline transportation systems; especially suitable for blast furnace pulverized coal injection, dust and solid powder pipeline systems, air pipelines and spray guns Pipelines, etc. The ash discharge ball valve is used for the equipment for conveying pulverized coal, control gas, particle-containing fluid and powder solid medium. It is a suitable valve for pulverized coal injection in metallurgy and mineral processing.
Fully Welded Forged Steel Fixed Ball Valve - Recommended for Petroleum Industry
Forged steel fully welded ball valves can be used in various types of petroleum pipeline equipment. The fully welded ball valve can be used reliably for a long time, without maintenance, and the operation is simple. The installation of the valve is more convenient, which saves the engineering time and reduces the engineering cost. The service life of the forged steel fully welded ball valve is the same as that of the pipeline.
DQ41F Cryogenic Ball Valve-Recommended for natural gas industry
The main features of the low temperature ball valve are its compact structure, reliable sealing, simple structure and convenient maintenance. The low temperature floating ball valve is also suitable for medium with harsh working conditions and is widely used in the natural gas industry.
DYQ340F Top Entry Eccentric Half Ball Valve-Recommended for mining industry
The top-loading eccentric half-ball valve is suitable for the mining industry. The ball and the valve seat of the top-loading eccentric half-ball valve are completely separated, which eliminates the wear of the sealing ring and overcomes the problem that the traditional ball valve seat and the sealing surface of the ball are always worn. Non-metallic elastic material It is embedded in the metal seat, and the metal surface of the valve seat is well protected.
Ball valve : Ultimate Guide
Introduce in detail the ball valve type code, drive mode code, connection form code, structure type code, ball valve seat material code, pressure grade code, valve body material code and flange sealing surface form code. The combination of these knowledge is a relatively complete and detailed model meaning and editing method of the ball valve.
The main feature of stainless steel ball valve is its compact structure, easy operation and maintenance. Different types of ball valves 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 integral or combined. This type of valve should generally be installed horizontally in the pipeline.
Classification of ball valves:
1. 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 valve.
2. The stainless steel ball valve relies on the rotating valve core to make the valve unblocked or blocked. The ball valve switch is light, small in size, can be made into a large diameter, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface are often in a closed state, not easy to be eroded by media, and are widely used in various industries. Only its closing part is a sphere, and the sphere rotates around the center line of the valve body to open and close a valve.
Commonly used ball valve models:
V-type ball valve model:
VQ640F, VQ40F, VQ940F, VQ641H, VQ70F, VQ670F, VQ970F, VQ71H, VQ671H, VQ971H;
Insulation ball valve model:
BQ41F, BQ641F, BQ941F;
Stainless steel ball valve model:
Q41F-16P, Q641F-10P, Q941F-25P, Q41H-40P, Q641H-10P, Q941H-25P;
Fluorine-lined ball valve model:
Q41F46, Q641F46, Q941F46;
Low temperature ball valve model:
DQ41F, DQ41H, DQ41V;
Wafer type ball valve model:
Q71F, Q671F, Q971F, Q71H, Q671H, Q971H,
High temperature ball valve model:
Q41M, Q641M, Q941M, Q41PPL, Q641PPL, Q941PPL,
Fixed ball valve model:
Q347F, Q647F, Q947F, Q347H, Q647H, Q947H, Q347W, Q647W, Q947W;
Turbine ball valve model:
Q341F, Q341H, Q341W, Q341Y;
Welded ball valve model:
Q61F, Q361F, Q61H, Q661F, Q661H, Q961F, Q961H;
Eccentric hemisphere valve model:
Q340F, Q640F, Q940F, Q340H, Q640H, Q940H, Q340Y, Q640Y, Q940V;
Top entry ball valve model:
SQ340F, SQ940F, SQ340H, SQ940H, SQ347H, SQ647H, SQ947H, DYQ340F, DYQ640F, DYQ940F;
Three-way ball valve model:
Q44F, Q45F, Q44H, Q45H, Q644F, Q645F, Q644H, Q645H, Q944F, Q945F, Q944H, Q945H;
Four-way ball valve model:
Q46F, Q46H, Q646F, Q646H, Q946F, Q946H.
Ball valve model code meaning:
1. The meaning of the ball valve type code:
Q means ball valve;
GQ means track;
VQ means V-type ball valve;
BQ means insulation ball valve;
KQ means anti-sulfur ball valve;
DQ means low temperature ball valve;
MQ means pulverized coal ball valve;
VQ means liquefied balloon valve;
QE means extension rod ball valve;
QO Represents oxygen ball valve;
QF represents fire-proof ball valve;
QS represents reduced diameter ball valve
2. The meaning of the code name of the drive mode of the ball valve:
0 means electromagnetic;
1 means electromagnetic-hydraulic;
2 means electric-hydraulic;
3 means pot wheel;
4 means spur gear;
5 means bevel gear;
6 means pneumatic;
7 means hydraulic;
8 means gas-liquid linkage;
9 Indicates electric
3. The meaning of the ball valve connection form code:
1 means internal thread; 2 means external thread; 4 means flange; 6 means welding; 7 means clamp; 8 means clamp;
0 means hemisphere straight; 1 means floating ball full pass; 4 means floating ball three-way L type; 5 means floating ball three-way T type; 6 means four-way type; 7 means fixed ball full pass-through; 8 means fixed ball three-way type ;9 means floating ball tee V type
5. The meaning of the material code of the ball valve seat:
F means polytetrafluoroethylene;
E means reinforced polytetrafluoroethylene;
D means medium temperature carbon fiber;
PPL means para-polyphenylene;
N means nylon;
M means wear-resistant carbon fiber;
C means high temperature wear-resistant carbon fiber;
V means cemented carbide ;
H means alloy steel;
Q means sugar porcelain;
T means copper alloy;
X means rubber
6. The meaning of the pressure grade code of the ball valve:
16 means the pressure is 16kg (1.6Mpa) and the maximum can reach 64Mpa;
150LB means American standard pound pressure, the maximum pressure rating can reach 2500LB (150LB=1.6MPA/300LB=2.5-4.0mpa/400LB=6.4mpa/600LB=10mpa); 5K means daily pressure, the maximum pressure is 63K;
7. The meaning of the material code of the ball valve body:
A titanium and titanium alloy, C carbon steel, l chromium molybdenum steel, P18-8 series stainless steel, RMo2Ti series stainless steel, S plastic.
8. The meaning of the form code of the sealing surface of the ball valve flange:
RF means raised surface; FM means concave surface; M means convex surface; TG means rod groove surface; FF means full plane; RJ means ring connection surface; SW means socket welding; BW means butt welding; TH means thread
- floating ball valve
- fixed ball valve
- elastic ball valve
Floating ball valve
Fixed ball valve
Elastic ball valve
- T-type: can connect three orthogonal pipes to each other and cut off the third channel, and play the role of diversion and confluence.
- L-type: can only connect two pipes that are orthogonal to each other, and cannot maintain the interconnection of the third pipe at the same time, and only plays a distribution role.
- Single-acting (characterized in that once the power source fails, the ball valve will be in the state required by the control system)
- threaded connection ball valve flange connection ball valve
- welded ball valve
- clamp quick connection ball valve
- wafer connection ball valve
Yes, but its function can only be used to switch, if you want to adjust the steam size, it is recommended to use a regulating valve!
Under the air pressure condition of 1.1 times the nominal pressure, the pressure should be maintained for 3 minutes, and the external leakage rate should not be greater than 1×10-5Pam3/s (no bubbles escape).2. Main factors The main factors affecting the sealing performance of the ball valve are the roughness of the sealing surface and the parameters of spherical roundness.
The relevant data recommends that the maximum allowable value of the roughness Ra value of the spherical sealing surface is 0.4m; the maximum allowable value of the Ra value of the sealing seat roughness is 0.8m when PTFE is used as the sealing material. The roundness tolerance of the spherical surface is more appropriate according to the 6-level accuracy in annex 2 of GB/T1184.