Pneumatic Quick Cut Ball Valve Overview:

V-type pneumatic fast cutting ball valve with leaf spring loaded movable seat structure, seat and the ball will not produce jamming or detachment and other issues, sealed and reliable, long service life. V-shaped incision between the core and the metal seat between the shear effect, especially for fiber, micro-solid particles and slurry and other media. Control of pulp in the paper industry is particularly advantageous. The opening and closing parts adopt the V-shaped ball short structure, completely solve the problem that the single coil solenoid valve cavity is easy to deposit the medium. Fully open when the valve flow capacity, the pressure loss is small. Compact structure, versatility, flow characteristics for the approximate percentage, adjustable range, the maximum adjustable ratio of 100: 1. Worm gear steam solenoid valves manufacturers also has a precise adjustment and reliable positioning function. V-type ball valve for Class150 ~ 600, PN1.6 ~ 10.0MPa, operating temperature ≤ 200 ℃ on a variety of pipelines, used to adjust the pressure in the pipe network pressure and flow, use different materials, can be applied to water, Steam, oil, nitric acid, acetic acid, oxidizing medium, urea, ammonia brine, and water and other media. The actuator is equipped with pneumatic piston actuator such as DOVNO series according to user requirements.

Gate valve applications:

DOVNO gate valve opening and closing parts is the gate, the direction of movement of the gate and the fluid direction is perpendicular to the use of the cut-off medium, the full flow through the full flow through, this time the minimum pressure loss of media operation. precision flow control valve are normally suitable for applications that do not require frequent opening and closing, and are kept fully open or fully closed, and are not suitable for use as adjustment or throttling. manual air control valve fluid resistance is small, the applicable pressure, the temperature range is large, the medium flow direction is not restricted, the sealing performance is good. Widely used in food, medicine, petroleum, chemical, natural gas, steel, environmental protection, paper and other transportation pipeline to do the media cut off or circulation.

Principle and Material List of Manual High Performance Butterfly Valve

High-performance butterfly valve with ultra-unique product structure, a special floating seat design, according to the direction of the pressure source, automatically adjust the seat position, to achieve the effect of double-sided valve pressure, and increased seat life, More than 500,000 times, the flange solenoid valve shaft through a special dust-proof design to prevent the fluid into the valve shaft caused by the solenoid throttle valve shaft stuck, high-performance butterfly valve according to different conditions, the choice of different materials and performance, seat using PTFE, RTFE, PEEK, METAL and other materials pumping, for petrochemical, oil refining, air separation, CDA and other conditions.

Manual high-performance butterfly valve main features:

1. Unique structure, double-sided pressure design, the valve strength in line with: ASME B16.34, API 598
2. Full range of pressure ring patent structure, ultra-reliable sealing.
3. A full range of anti-static guide device structure, ultra-small operating torque.
4. In accordance with the explosion-proof certification: ATEX 94/9 / CE Group II Category 2 GD
5. Full caliber through the API 607 ​​fire test requirements, special conditions safe fire, long long service life.
6. Metal seat leakage rating in accordance with ANSI FCI 70-2-2003 Table 1 CLASS IV
7. relief valve transportation shaft escape in line with EPA Method 21 test and TA-LUFT emission requirements (OPTIONS)
8. Connection method has a folder, single flange type.

Double flap check valve advantages

A. short structure, small size, light weight, for the valve installation, handling, storage and pipeline layout to bring great convenience,
And can save costs.
B. Reduced line vibration, in order to minimize the line vibration or eliminate line vibration, the flow must have the opportunity to countercurrent as soon as possible before closing the pneumatic solenoid water valves.
Both flap check valves each have only a full structure to check the size of the valve flap one morning, and it is experienced by reducing the fluid resistance and can be more
Move quickly to the closed position. They have only half the radius of the conventional check valve. Its half distance from the open position to the leading position of the closed position,Thus reducing the travel time to 50%
C. Reduced water hammer, the whole structure of the swing pneumatic control components price contrast, double flap-type flap valve has been greatly reduced the weight, it can slam the
Water hammer phenomenon to a minimum.

Electric valve operation principle

The high-quality standard air cylinders is used to adjust the medium flow, pressure and hydraulic. According to the adjustment part of the signal, automatic control valve opening, so as to achieve the media flow, pressure and hydraulic adjustment. JELPC Automation Components sub-electric control valve, pneumatic control valve and hydraulic control valve. Control valve by the electric actuator or pneumatic actuator and control valve composed of two parts. The electric control valve is usually divided into two types: single-seat type regulating valve and straight-through two-seat regulating valve. The latter has the characteristics of large circulation capacity, unbalanced operation and stable operation, so it is usually especially suitable for large flow, Leak less occasion.
    The flow capacity Cv is one of the main parameters of the selection of the Japan Series Cylinder. The circulation capacity of the control valve is defined as: when the pressure of the valve is 0.1MPa and the fluid density is 1g / cm3, The flow rate of the diameter control valve, known as the flow capacity, also known as the flow coefficient, expressed in Cv, the unit is t / h, the liquid Cv value calculated by the following formula.

Principle and setting of safety valve

The steam solenoid valves is a safety device that prevents the pressure device and the container from causing the pressure to rise or the pressure inside the container exceeds the limit. Safety valves are pressure vessels, boilers, pressure pipes and other pressure systems using a wide range of safety devices to ensure the safe operation of the pressure system.
When the container pressure exceeds the design requirements, the safety valve automatically open, exhaust gas reduction device over the high pressure to prevent damage to the container or pipeline. And when the pressure inside the container down to normal operating pressure, that is automatically closed to avoid the container overpressure to discharge all the gas, resulting in waste and production disruption.
air flow control valves mainly by the valve seat, valve (valve core) and loading mechanism of three parts. Some of the valve seat and the valve body is a whole, and the valve body is assembled together, it is connected with the device. The valve flap is often accompanied by a stem, which is fastened to the valve seat. The above valve is the loading mechanism, the size of the load can be adjusted. When the pressure inside the device within a certain working pressure range, the internal medium on the valve above the force is less than the loading mechanism attached to the valve above the force, the difference between the valve and the valve seat between the sealing force, So that the valve discs pressed the valve seat, the equipment can not be discharged media. When the pressure inside the device exceeds the specified working pressure and reaches the opening pressure of the safety valve, the force exerted by the inner medium on the flapper is greater than the force exerted on it by the loading mechanism, so that the valve flap leaves the valve seat, the safety valve opens, The medium is discharged through the valve seat, if the safety valve displacement is greater than the safety of the equipment discharge, the equipment pressure is gradually decreased, and through a short period of time after the exhaust, the pressure is back to normal working pressure. At this point the internal pressure on the valve above the force is less than the loading mechanism applied to it above the force, the valve plate and pressed the valve seat, the media stopped discharging, the equipment to maintain normal working pressure to continue to run. Therefore, the safety valve is through the valve on the media force and load mechanism of the force of the length of their own closed or open to achieve the purpose of preventing overpressure equipment.