Ball valves Q347F 16C and Q41F 16C routine maintenance and common repairs

Q347F-16C is a worm gear fixed ball valve, Q41F-16C is a manual flanged ball valve.

Ball valve model preparation method and description:

Additional code for ball valves: V means the valve core has a V-shaped structure, D means low temperature, B means heat preservation, P means eccentric structure, U and S and DY mostly represent top-mounted type;

Ball valve name code: Q means ball valve;

Ball valve drive code: 2 means electro-hydraulic, 3 means turbine, 6 means pneumatic, 7 means hydraulic, 9 means electric, manual no code;

Connection code: 1 means internal thread, 4 means flange type, 6 means welding, 7 means clamp type;

Structural type code:

Floating type: 1 means straight flow to, 2 means Y-type tee, 4 represents L-type tee, 5 represents T-type tee;

Fixed: 0 means hemispherical straight-through, 6 means four-way flow, 7 means straight-through flow to, 8 means L-shaped tee, 9 means Y-shaped tee;

Sealing material code: B babbitt, F fluoroelastomer.

F46 fluorine lining, H rust steel, J lining, M Monel alloy, Nylon plastic, Monel P, Y cemented carbide, W valve body direct processing;

Pressure class code: 16 means that the pressure is 16 kg (up to 64MPa; 150lb means American Standard.

Pound pressure, the maximum pressure rating can reach 2500lb (150lb=; 5k represents daily pressure, and the maximum pressure is 63k;

Body material code: A titanium and titanium alloy.

C carbon steel, i chromium molybdenum steel.

P18-8 series stainless steel, RMO2Ti series stainless steel, S plastic.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. Although the ranking may change due to time and market conditions, the following brands are generally considered to be among the top brands in the valve industry: Water System Valves and Industrial ValvesThe following more influential first-line brands can be used as a reference, but are for reference only:

Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Suyan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Packing & Sealing Materials Note that there is basically no technical stuff either.

Q - valve type code: ball valve;

4-valve connection form code: flange;

1-valve structure code: floating straight-through;

f—seat sealing surface or lining material code: fluoroplastic;

16-nominal pressure value,;

C—valve body material code: ZG25.

This is a spherical valve number, Q- stands for spherical, 4-flange connection, 1-DC channel, floating ball, F-sealing surface material is fluoroplastic, 16-nominal pressure 16 kg, specific parameters: model: Q41F-16, diameter: DN15-200mm, pressure: temperature: 135, material: gray cast iron, applicable medium: water, steam, oil.

1. Floating ball valves are generally from DN15 to DN250. Fixed ball valves generally start from DN50. To sum up, a floating ball valve is used for small diameters, and fixed ball valves are used for large diameters.

2. Appearance-speaking, the bottom of the fixed ball valve has one more lower stem bracket than the floating ball valve.

3. The body material of the valve body is no different from the fixed ball valve. Materials are available upon request.

1. Cryogenic ball valve DQ41H-16P means: D low temperature, Q ball valve, 4 flange connections, 1 floating straight flow channel, H means stainless steel, 16 pressure is 16 kg, P valve body is 18-8 series stainless steel;

2. Pneumatic ball valve Q645F-25C means: Q ball valve, 6 pneumatic drive, 4 flange type, 5T type three-way flow channel, F fluoroplastic, 25 pressure 25 kg, C cast steel.

Common ball valve models are:

V-type ball valve: VQ40F, VQ640F, VQ940F, VQ641H, VQ941H, VQ70F, VQ670F, VQ970F, VQ71H, VQ671H, VQ971H;

1. The material of the valve body and bonnet is different.

1. Ball valve Q41F-16C: The valve body and bonnet material of ball valve Q41F-16C are carbon steel cast steel.

2. Ball valve Q41F-16P: The valve body and bonnet material of ball valve Q41F-16P are chromium-nickel stainless steel.

Second, the material of the ball and valve stem is different.

1. Ball valve Q41F-16C: The material of the ball and stem of the ball valve Q41F-16C is chromium, chromium-nickel, chromium-nickel and molybdenum stainless steel.

2. Ball valve Q41F-16P: The ball and stem material of ball valve Q41F-16P are chromium-nickel stainless steel.

3. The applicable media are different.

1. Ball valve Q41F-16C: Ball valve Q41F-16C is suitable for water, steam, oil and other media.

2. Ball valve Q41F-16P: Ball valve Q41F-16P is suitable for weak corrosive media.

Q41F Ball Valve Operation and Use:

1. Before operation, confirm that the pipeline and valve have been flushed.

2. The operation of the valve is completed by driving the valve stem to rotate according to the size of the input signal of the actuator: when the forward rotation is 1 4 turns (900), the valve is closed. Reverse rotation 1 4 turns (900) when the valve opens.

3. When the direction indication arrow of the actuator is parallel to the pipeline, the valve is open; When the indicator arrow is perpendicular to the pipeline, the valve is closed.

The difference is that its closing part is a ball, and the ball rotates around the center line of the valve body to achieve opening and closing. Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. Q refers to ball valve, 4 refers to flange connection, 1 refers to straight-through valve, F refers to PTFE seal (soft seal), 16 refers to nominal pressure, C refers to cast steel, carbon steel material.

q Ball valves.

4: Flange type.

1: Manual operation.

f: Polytetra Buddha vinyl seal.

16: Nominal pressure.

C: The valve body is made of carbon steel.

1. The material of the valve body is different: the body material of Q41F-16C is cast steel, and the material of Q41F-16P is 304 stainless steel. q stands for ball valve (the first letter of qiu pinyin); 4 represents flange connection; 1 represents a ball valve is a floating ball (the ball valve is divided into a floating ball and a fixed ball, and 7 represents a fixed ball); F stands for PTFE-PTFE seal (PTFE PTFE); 16 represents the nominal pressure of the ball valve is 16 kg (; C stands for ball valve body material is cast steel, P stands for ball valve body material is 304 stainless steel.

Second, the anti-rust function of the ball valve body is different: because the material of Q41F-16P is 304 stainless steel, it is better than the anti-rust function of Q41F-16C.

3. Adapt to different environments and mediums: the pressure and temperature resistance of Q41F-16P are higher than those of Q41F-16C; Q41F-16C is suitable for water and other general mediators, and Q41F-16P can be used for acidic media, which is more corrosion-resistant than Q41F-16C.

Qinqin Ball Side Valve Q41F-16 Three-way Ball Valve is a standard product for pumps, valves and pipeline equipment specified in GB T21465-2008, wherein Q41F stands for metal sealed three-way ball valve, 1 means flange connection, 6 means nominal pressure, 3 means T-type ball valve. Q41F-16-63C and Q41F-16-63F are two different models, the main differences are:1

The connection mode is different: the connection mode of Q41F-16-63C is the connection of the flange scale Jane Shot, and the connection mode of Q41F-16-63F is the internal thread connection; 2.The material is different:

There may be some differences between the materials used; 3.Different use scenarios: There may also be some differences in the use scenarios of these two models, and it is necessary to decide which type of ball valve should be selected according to the specific situation.

Ball valves Q41F-63C and Q41F-63F are both DN63 caliber ball valves, the main difference is that the sealing structure is different. The Q41F-63C ball valve is a fixed ball valve with packing seal structure. It has the advantages of simple structure, reliable sealing, light operation, etc., and is suitable for on-off control of medium and low pressure pipelines.

Q41F-63F Ball Qicha Valve is a floating ball valve with an elastic seat seal structure. It has the characteristics of corrosion resistance, wear resistance, good sealing, etc., and is suitable for fluid control in harsh environments such as high pressure, large diameter and high temperature. In addition, the Q41F-63F ball valve can also be equipped with a shock absorbing device to improve the service life and safety performance of the ball valve.

Therefore, whether to choose Q41F-63C or Q41F-63F ball valve needs to be selected according to the specific use occasions and requirements.

Gas ball valves Q41F-63C and Q41F-63F are basically the same in appearance, both are straight-through all-through ball valves. However, they differ in performance parameters such as material, applicable medium and working pressure.

Among them, Q41F-63C is mainly made of carbon steel or stainless steel, which is suitable for gas, oil, steam and other media, and its working pressure is generally between PN16 and PN64, which is more suitable for the use of some small and medium-sized industrial occasions.

The Q41F-63F is designed for the fluorine chemical industry, mainly using high-bending and high-strength materials such as stainless steel, internal fluorine coating and other special process treatment, in the sealing of the medium performance is better, suitable for pharmaceutical, food, chemical and other industries of the medium pipeline system, its working pressure can reach PN40 to PN100, suitable for some high-pressure, large-flow occasions.

For example, if a ball valve in contact with fluoride needs to be installed in a chemical plant, then the ball valve of the Q41F-63F model should be selected; And if you need to control the flow of natural gas at a filling station, you can choose the ball valve of the Q41F-63C model.

Q41F-63C and Q41F-63F are both models of ball valves, and their difference lies in the different types of valve bodies. The valve body of Q41F-63C is made of carbon steel, which is suitable for general industrial piping systems. The valve body of Q41F-63F is made of stainless steel, which is suitable for more rigid and harsh industrial piping systems, and has the characteristics of corrosion resistance, high temperature resistance, pressure resistance, etc., and has a longer service life.

In addition to the different body materials, the design parameters and technical performance of the two types of ball valves are basically the same, and they both adopt the ball valve structure, which can achieve the advantages of fast switching, small flow resistance and good sealing. The choice of ball valve should be decided according to the specific use environment and requirements.

1. Ball valve Q41F-16C

Q stands for ball valve (the first letter of Qiu Pinyin), 4 stands for flange connection, 1 stands for ball valve is floating ball (ball valve is divided into floating ball and fixed ball, 7 stands for fixed ball), F stands for PTFE-PTFE seal (PTFE PTFE), 16 stands for ball valve The nominal pressure is 16 kg (, C stands for ball valve body material is cast steel.

Ball valve Q41F-16C is a soft seal cast steel flanged ball valve.

2. Hail hole ball valve Q41F-16P

Q stands for ball valve (the first letter of Qiu Pinyin), 4 stands for flange connection, the first generation of the fibrillation table is the ball valve is a floating ball (the ball valve has a floating ball and a fixed source dry ball, 7 represents a fixed ball), F stands for PTFE-PTFE seal (PTFE PTFE), 16 represents the nominal pressure of the ball valve is 16 kg (, P stands for the ball valve body material is 304 stainless steel.

The ball valve Q41F-16P is a soft seal stainless steel flanged ball valve.

3. The difference between ball valve Q41F-16C and Q41F-16P.

The body of the ball valve Q41F-16C is made of cast steel.

The body material of the ball valve Q41F-16P is 304 stainless steel.