What is the purpose of a pneumatic interlock valve and what is a pneumatic valve?

The pneumatic interlock valve is installed on the bottom loading and unloading joint and oil and gas fittings to prevent accidental falling off during the feeding process, and can be used for API valves, oil and gas joint valves, and when connected with the loading arm, to prevent it from opening the loading rack. The pneumatic switch is available in three directions for normal opening and closing, it has an adjustment lever and is matched to standard TTMA and API mounting holes, and is also used in a number of different applications for better safety.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, 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.

Pneumatic valves: valves actuated by the aid of compressed air.

The working principle of the pneumatic control valve: The pneumatic control valve is composed of an actuator and a regulating mechanism. The actuator is the thrust part of the regulating valve, which generates the corresponding thrust according to the magnitude of the control signal pressure and pushes the regulating mechanism to act.

The valve body is the regulating part of the pneumatic control valve, which is in direct contact with the regulating medium and regulates the flow of the fluid.

The control signal energizes the solenoid valve, the solenoid valve opens, the compressed air enters the air chamber, the pneumatic valve valve membrane is pushed, and then the valve stem is pushed, and the valve stem drives the valve core to open or close.

There are two kinds of pneumatic valves, the first is an electronically controlled air valve, and the second is a hand-controlled air valve.

Therefore, the name suggests, the cylinder is driven by a certain pressure of air as the driving force, so that the torque rod of the cylinder does the rotational motion. Turn the valve plate switch. There is also a turboworm type. All in all, it is a valve that uses air as the power control source.

There are many kinds of pneumatic valves, 1. Solenoid valves, which use electromagnetic principles to reversing the valve core. 2. Pneumatic control valve, reversing with compressed air control valve. 3. The machine-controlled valve is reversed by external force control valve.

The function of the bolts on both sides of the pneumatic valve is the regulating part of the pneumatic control valve, which is in direct contact with the regulating medium and regulates the flow of the fluid.

The use and characteristics of the pneumatic valve is a quarter-angle rotary structure, which is used with the valve positioner to achieve proportional adjustment; The V-shaped spool is most suitable for various adjustment occasions, with large rated flow coefficient, large adjustable ratio, good sealing effect, sensitive adjustment performance, small size, and can be installed vertically. It is suitable for controlling gas, steam, liquid and other media.

The pneumatic valve is a quarter-turn structure, which is composed of a V-shaped valve body, a pneumatic actuator, a positioner and other accessories; There is an intrinsic flow characteristic of approximately equal percentage; It adopts double bearing structure, small starting torque, excellent sensitivity and induction speed; Superior shearing ability.

The pneumatic piston actuator uses compressed air as the power source, and drives the crank arm to rotate 90 degrees through the movement of the piston to achieve automatic opening and closing of the valve. Its components are: adjusting bolts, actuator boxes, crank arms, cylinder blocks, cylinder shafts, pistons, connecting rods, cardan shafts.

Stroke adjustment. It is to adjust the stroke of the valve opening and closing.

It is a right-angle rotary structure, which is used with a valve positioner to achieve proportional adjustment; The V-shaped spool is most suitable for various adjustment occasions, with large rated flow coefficient, large adjustable ratio, good sealing effect, sensitive adjustment performance, small size, and can be installed vertically. It is suitable for controlling gas, steam, liquid and other media.

It is a quarter-turn structure, which is composed of a V-shaped valve body, a pneumatic actuator, a positioner and other accessories; There is an intrinsic flow characteristic of approximately equal percentage; It adopts double bearing structure, small starting torque, excellent sensitivity and induction speed; Superior shearing ability.

"<1> The function of the pneumatic control element is to control and adjust the pressure, flow direction and flow of compressed air in the pneumatic system, so that the actuator and the driven working mechanism can obtain the required direction of motion, thrust and speed.

2> There are many types of pneumatic control components, which are divided into directional control valves, pressure control valves, flow control valves and logic control components according to their functions. "

Hope it helps.

Pneumatic valves are valves that are actuated by the help of compressed air. The practice of meeting the procurement requirements by only clarifying the specifications, categories and working pressure when purchasing pneumatic valves is imperfect in the current market economic environment. Because pneumatic valve manufacturers have carried out different innovations under the concept of unified design of pneumatic valves for the sake of product competition, and formed their own corporate standards and product personalities.

Therefore, it is necessary to put forward the technical requirements in detail when purchasing pneumatic valves, and to coordinate with manufacturers to reach a consensus, as an annex to the pneumatic valve procurement contract. This type of valve should generally be installed horizontally in the pipeline.

1.General requirements The specifications and categories of pneumatic valves should meet the requirements of pipeline design documents.

The model of the pneumatic valve should indicate the national standard number requirements according to it. If it is an enterprise standard, the relevant description of the model should be indicated.

The working pressure of the pneumatic valve requires the working pressure of the pipeline, and the working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline under the premise of not affecting the first grade; Under the condition of pneumatic valve closed, any side should be able to withstand the working pressure value of the valve without leakage; When the valve is opened, the valve body should be able to withstand the requirement of twice the working pressure of the valve.

The manufacturing standard of pneumatic valve should indicate the national standard number on which it is based, and if it is an enterprise standard, the enterprise documents should be attached to the purchase contract.