Pneumatic two-stage control valve has very good switching characteristics, which can ensure the measurement accuracy when the fluid trade is transferred. The quick exhaust and throttling functions are used in the actuator to slow the opening and closing of the valve, so that the fluid in the pipeline changes smoothly, and the water hammer caused by the impact will not cause the flammable fluid to explode, nor will it be impacted. It can damage the flowmeter and other instruments in the system, so it is suitable for flow control systems in petroleum, chemical, light industry, national defense and other industries. It is especially suitable for oil storage and transportation systems.
The pneumatic two-stage control valve provides a three-position operation mode of 0°-45°-90° or 0°-90°-180°. The middle position is achieved by the movement of two auxiliary pistons to generate a mechanical brake. This middle position is adjustable, such as the 900 stroke actuator can provide 20°, 30°, 50°, 75° and other intermediate positions.
1.Dry or lubricated working medium or impurities in non-corrosive gas medium Micro material is less than 30um. 2.Air pressure 3.The media environment temperature 4.Standard: -20~80°C Low temperature: -35~80°C High temperature: -15~150°C 5.Stroke adjustment 6.0° and 90° two positions with ±5° 7.Installation occasions 8.Indoor or outdoor installation
1.It can realize multi-position action control functions such as opening and closing of the valve for two sections, opening of the second section of the second section, and opening of the third section of the third section. 2.The speed of the on-off valve is adjustable; 3.The valve is opened and the valve opening degree is adjustable; 4.Automatic and manual control; 5.Safe return (FC/FO) for gas shutoff/de-energization; 6.Meet APl607 fire protection, APl6D anti-static requirements
Solenoid valves S1, S2 use 2-position 5-way solenoid valve, position as above NSS1: 220VA or 24VDC relay output contact control S1 NSS2: 220VA or 24VDC relay output contact control S2
Electro hydraulic valve structure diagram
Diagram of oil depot
The action process is as follow
Main technical parameters and configuration, installation dimensions
Diameter Nominal /Standard
Pneumatic control ball valve selection
HUBEI HONGYI ELECTRONIC&TECHNOLOGY CO.,LTD,in 2009,which covers an area of more than 3500 m2,has 4standard plants of over 6000 m2 in area,in which ,the building area of the office building ,R&D center,etc.is about 4500 m2,has more than 100 sets of nc press,nc bending machine,prectreatment system and spraying equipment that are the most advanced in china,a complete set of advanced online flow calibration system as well as a number of instrument and electronics testing equipment.We also lay emphasis on cooperation with the domestic and foreign excellent industrial control manufactures,and have established cooperation relationship with the design institutes of the Ministry of Chemical industry as well as the electronic control institutes of a number of universities.Through these cooperators,by combining our core products,we provide the users with the best system solutions.