Why do valves have direction? What is the direction of the water pipe valve switch

The valve is the same as the door, there is a free door, which can be opened inward or outward; There are directional doors, and you can only open them inside (or out). Many doors are directional doors. The door can only be opened in one direction.

Moreover, there is a requirement for the direction of the door. Why? If there is a fire in the mall, people will rush to the door, but the door is open inward, and people will flock out, and more and more people will squeeze the door, and several people will break the doorknob and finally fail to open the door.

If the door is opened outward, and people open it as soon as they hug it, the doorknob will not break, and people will be saved.

The valve is the same, the water is in the valve mouth, as long as the support bar is gently loosened, the water will be swarmed out, if it is reversed, the water will hold the valve, the support bar becomes a pull bar, the water will be the door to hold the force is very large, soon the pull point or pull rod will be broken, the water gate will never be opened.

In addition, there are many valves with different functions, which have strict requirements for the direction of water flow. For example, the check valve, installed correctly, it can make the pump water pass smoothly, when the pump stops working, the check valve will automatically close to prevent the water from flowing back, if it is reversed, the pump can not get out of the water. And the water that should have flowed in turned back.

When installing the valve, it must be installed correctly according to the instructions, and the installation direction should not be reversed, so as not to make the electric valve abnormal.

The valve stem is up and down, down is the valve open, on the contrary, up is to close the valve, the valve opening is small, the water flow is relatively small when the normal water flow, if it is reversed, there is a certain obstacle, the water flow is smaller, and then from another angle to analyze, the water flow is a certain pressure, if the valve is reversed, the water flow will give the valve a certain pressure that will make the valve stem pressure up, the valve opening will be closed, which will not only hinder the operation of the drive, The drive motor is severely damaged, and the pipe does not have a certain flow rate.

This is a thing that should be noted in the electric valve valve is "zhi" shape, and the valve must be installed according to the correct installation direction.

We can often see the valve on the water pipe in our daily life, it controls the switch of the water pipe, so what is the direction of the water pipe valve switch?

Normal to the right is open, to the left is closed, the valve is usually closed clockwise, open counterclockwise, that is, along the arrow pointing to the direction of S is closed, along the arrow pointing to the direction of O is open, where S is shut, is also closed, O stands for open, is also open, if equipped with a hand wheel, then to the right thumb to rotate is open, and vice versa is closed.

2. What are the precautions for installing valves?

1. The installation of the valve will generally take the way of welding, so as to ensure more stability, in fact, when preheating and welding, the valve should be in a fully open condition, otherwise the welding slag will be glued to the construction surface, which will interfere with the effect of the seal, if there is a leak, the valve will fail.

2. After the valve is welded, if you want to rotate, you need to apply lubricating grease.

3. What are the types of valves?

1. If it is classified according to the working principle, it can be divided into two categories, one is automatic, which can use liquid or gas to move, such as common check valves, pressure reducing valves, regulating valves, etc., and the other is driven, which needs to be driven by manual or electric, such as shut-off valves and globe valves.

2. It is classified according to the structure, so there are many types, such as butterfly type, valve type, slide valve type, etc., and their application fields are also different.

I conclude: the above is some information about the direction of the valve switch of the water pipe, from the above article we can see that usually the valve will be marked with letters to remind people of the actual direction, we just need to act in accordance with the instructions above, there are many types of valves on the market, the actual choice of valves should also take into account their own needs and the environment to choose the appropriate use, so as to be able to play the greatest efficiency, I hope to be able to help you.

The valve opening is counterclockwise.

The valve is used to open and close the pipeline, control the flow direction, and adjust the flow.

section and piping accessories that control the parameters (temperature, pressure and flow) of the medium to be conveyed. According to its function, it can be divided into shut-off valves, check valves, regulating valves, etc.

Valves are control components in fluid transportation systems, which have the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves for fluid control systems range from the simplest shut-off valves to the most complex valves used in automated control systems.

No, valves and switches and screws are tight in the clockwise direction and loose in the counterclockwise direction.

There are generally two kinds of tap water valves, one is ball valves; One is the gate valve. The wrench of the ball valve is closed when it is perpendicular to the water pipe, and it is open when the 90-degree wrench is screwed forward or reversed in the direction of the water pipe; The handwheel of the gate valve is closed when screwed clockwise, and screwed counterclockwise is open. The gate valve should not be tightened too tightly during application, so as to avoid the threaded pre-buckle valve core falling off.

Ball valves are trouble-free, labor-saving and durable when applied.

The valve that can be rotated is the principle of the screw and nut, and the switch can be known and is buckled, so it is counterclockwise and the net is turned on and on, and it is turned down clockwise, so it is closed.

The valve is shown clockwise rotation of the handwheel is to close the valve, counterclockwise rotation of the handwheel is to open the valve, the number above indicates the large calibration of the valve opening When the handwheel is rotated clockwise, the number 0 on the top corresponds to the pointer is completely closed; When you rotate the handwheel counterclockwise, the valve is opened to the maximum extent when the upper number 5 corresponds to the pointer.

Generally bai clockwise square.

Du direction is off, against the clock.

The direction of the needle is open.

The domestic DAO tap gate valve switch version is open counterclockwise, and clockwise is off.

If the switch direction of the tap gate valve is made in imperial units, it is counterclockwise to close and clockwise to open.

The valve that can be rotated is the principle of the screw and nut, and the switch can be known and is buckled, so it is counterclockwise and the net is turned on and on, and it is turned down clockwise, so it is closed.

Clockwise rotation of the handwheel is to close the valve, counterclockwise rotation of the handwheel is to open the valve, the number above indicates the valve opening of the large calibration clockwise rotation of the handwheel, to the upper number 0 corresponds to the pointer is completely closed. When you rotate the handwheel counterclockwise, the valve is opened to the maximum extent when the upper number 5 corresponds to the pointer.

For valves in general, yes.

There are two kinds of self-water valves.

Seed ball valves; Kind of gate valve.

The ball valve wrench is perpendicular to the water pipe.

Close or reverse screw the 90-degree wrench and the water pipe in the same direction.

Beat; Gate valve. The handwheel is screwed off in reverse direction.

The needle screwing gate valve should be tightened.

The thread-free buckle spool falls off.

Ball valve applications. Effortless and durable.

The valve closes clockwise and opens counterclockwise, and the valve is a control component in the fluid transportation system, which has the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Chain head valves for fluid control systems range from the simplest shut-off valves to the most complex valves used in automated control systems. <

The valve closes clockwise and opens counterclockwise, and the valve is a control component in the fluid transportation system, which has the functions of shut-off, adjustment, diversion of sheds, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves for fluid control systems range from the simplest shut-off valves to the most complex types of valves used in automated control systems. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals and radioactive media.

Many valves have directionality, such as globe valves, throttle valves, pressure reducing valves, check valves, etc., if they are installed in reverse, it will affect the use effect and life (such as throttle valves), or do not work at all (such as pressure reducing valves), or even cause danger (such as check valves). General valves, there are direction signs on the valve body; In case not, it should be correctly identified according to the working principle of the valve.

Control valves, globe valves, eccentric butterfly valves, check valves, check valves, solenoid valves, pressure reducing valves, sewage valves, trap valves. Needle core valves, V-type ball valves, and some ball valves all have a flow direction, so the installation is directional.

Here are some of the valve installation directions::

1.Check valve: A check valve is a directional valve, which needs to be installed to determine the flow direction of the fluid according to the direction of the arrow to ensure that the check valve can work normally.

2.Electric ball valve: The electric ball valve also has directionality, which needs to be installed according to the interface of the electric valve and the interface direction of the pipeline to ensure that the electric ball valve can work normally.

3.Water Dragon Xufan Changtou: When installing the faucet, it is necessary to pay attention to the inlet and outlet direction of the hot and cold water to ensure that the faucet can be used normally.

4.Butterfly valve: The butterfly valve is also directional, and the flow direction of the fluid needs to be determined according to the arrow direction of the butterfly valve to ensure that the butterfly valve can work normally.

In conclusion, different types of valves need to be installed with attention to their directionality to ensure that the valve can work properly.