Stainless steel ball valves are available in many markets, including electric, pneumatic, and mobile. We mainly introduce electric stainless steel balls, which are used to cut off or connect the medium in the pipeline, and can also be used for fluid adjustment. With control. Electric stainless steel ball valve has the following advantages compared to other valves.
1. The fluid resistance is small, and the ball valve is the one with the least fluid resistance in all valves. Even for the reduced diameter ball valve, the fluid resistance is quite small;
2. The thrust bearing reduces the frictional torque of the valve stem, which makes the valve stem smooth and flexible for long-term operation;
3. The sealing performance of the valve seat is good. The sealing ring made of elastic material such as PTFE is easy to seal, and the valve sealing capacity of the ball valve increases with the increase of the medium pressure;
4, the valve stem seal is reliable, because the valve stem only performs the imitation rotation without lifting movement, the packing seal of the valve stem is not easy to break, and the sealing capacity increases as the pressure of the medium increases;
5. Since the material such as polytetrafluoroethylene has good self-lubricating property and the friction loss with the sphere is small, the service life of the ball valve is long;
6. The bottom mounted valve stem and the stem of the valve stem prevent the valve stem from being sprayed out. If the valve stem seal is broken due to fire, metal contact may be formed between the convex step and the valve body to ensure the valve stem is sealed;
7. Anti-static function: a spring is arranged between the ball, the valve stem and the valve body, and the static electricity generated by the switching process can be derived.
The electric stainless steel ball valve actuator adopts a new series of GT-type pneumatic actuators, which have double-acting and single-acting (spring return), rack and pinion transmission, safe and reliable; large-diameter valves adopt series AW pneumatic actuator fork-type transmission. The structure is reasonable, the output torque is large, and there are double acting and single acting.
1. Gear type double piston, large output torque and small volume.
2. The cylinder is made of aluminum and gold materials, which is light in weight and beautiful in appearance.
3. Manual operation mechanism can be installed at the top and bottom.
4. The rack-and-pinion connection can adjust the opening angle and rated flow.
5. The actuator can be equipped with electric signal feedback indication and various accessories for automatic operation.
6, IS05211 standard connection provides convenience for the installation and replacement of the product.
7. The joint screws adjusted at both ends can make the standard product have an adjustable range of ±4° at 0° and 90°. Ensure synchronization with the valve.
Options for Electric Stainless Steel Ball Valve Actuator Accessories The following accessories are available for different controls and requirements:
Cut-off accessories: single electric control solenoid valve, double electric control solenoid valve, limit switch echo.
Adjustable accessories: electrical positioners, pneumatic positioners, electrical converters.
Air source treatment accessories: air filter pressure reducing valve, air source treatment triple piece.
Manual mechanism: HVSD hand mechanism
The article is from: http://News.asp?id=126
High Velocity Powder-Actuated Tool is used for normal concrete not harder than C40. The nail initial velocity is very high as there is no piston but high pressure gas to push it.
High Velocity Powder-Actuated Tool
High Velocity Powder-Actuated Tool ,Powder Actuated Tool,Powder Actuated Fastener Tools,Powder-Actuated Insulation Tool
Yibin Heheng Technology Co.,Ltd , http://www.chinadirectfastening.com