Technical parameter
Installation dimensions
Model description
Working Principle
Technical parameter
|
Valve Body |
|
| Type | Through single-seat |
| Size | DN15-500mm |
| Nominal pressure | ANSI125,150,300,600,JIS10,16,20,30,40K,PN1.6,4.0,6.4Mpa |
| Connection | Flange:FF,RF,RJ and LG ; According JIS B2201 or ANSI B16.5 and JB/T79.1 convex,JB/T79.2 PN4.0Mpa ,welding ,SW |
| Bonnet | Normal temperature type:-17~230℃ Elongation type:-45 ~ -170℃ welding type:-196 ~ -100℃ |
| Stuffing | V type teflon,Containing PTFE asbestos stuffing,Asbestos woven stuffing,graphite |
|
Trim |
|
| Flow characteristic | Equal percentage and linear characteristic |
|
Actuator |
|
| Type | multi-spring diaphragm ,piston actuator,electric |
Installation dimensions
Model description
| Model | Introduction | |
| TYP302 | ||
| Valve type | TYP300 | CV3000 type |
| TYP900 | forged steel sleeve type steam trap valve | |
| TYP910 | forged steel labyrinth control valve | |
| TYP920 | forged steel cascade throttle control valve | |
| FIG580 | 2 ways control valve | |
| FIG680 | 3 ways control valve | |
| FIG681 | 3 ways bellows sealing control valve | |
| JX480 | slide valve | |
| Actuator | A | single spring diaphragm type |
| B | multi-spring diaphragm type | |
| C | single action piston | |
| C1 | double action piston | |
| D | electric | |
| F | electric-hydraulic | |
| E | manual | |
| G | pneumatic-hydraulic | |
| H | other | |
| Open/Close type | 1 | air to open type |
| 2 | air to close type | |
| 3 | electricity to open | |
| 4 | electricity to close | |
| Action type | A | direct action |
| B | reaction | |
| Handwheel | 1 | without handwheel |
| 2 | top mount the handwheel | |
| 3 | Side mount the handwheel | |
| Connection | F | flange |
| H1 | butt welding | |
| H | socket | |
| S | internal thread | |
| S1 | external thread | |
| J | wafer type | |
| K | other | |
| Valve trim structure | 1 | shut-off valve |
| 2 | sleeve single seat valve | |
| 3 | sleeve double seat valve | |
| 4 | porous type noise reduction cage | |
| 5 | labyrinth cage | |
| 6 | multistage depressurization type cage | |
| 7 | other | |
| Valve core structure | A | balanced internal parts |
| B | unbalanced internal parts | |
| Valve bonnet type | 1 | standard type |
| 2 | cooling fin type | |
| 3 | lengthen type | |
| 4 | bellow type | |
| 5 | clamp cover type | |
| 6 | other | |
| Flow characteristic | 1 | quick opening |
| 2 | linear | |
| 3 | equal percent | |
| 4 | fixed percentage | |
| Valve seat material | 1 | RPTFE |
| 2 | alloy steel | |
| 3 | cemented carbide | |
| 4 | tungsten steel | |
| 5 | other | |
| Norminal diameter | DN | DN15-DN500 |
| Norminal pressure | PN | PN10-PN760 |
| LB | 150LB-2500LB | |
| K | 5K-60K | |
| Material type | 1 | WCB |
| 2 | WC6 | |
| 3 | WC9 | |
| 4 | CF8 | |
| 5 | CF3 | |
| 6 | CF8M | |
| 7 | CF3M | |
| 8 | A105 | |
| 9 | F91 | |
| 10 | F22 | |
| 11 | other | |
| Illustraton | ||
| 1、TYP300-B-1-A-2-F-2-A-1-3-1-DN50-PN25-CF8 | ||
| 1.CV3000 series，Multi-spring diaphragm cylinder,air to open type,direct action,top mount the handwheel,sleeve single seat valve,balanced internal parts ,standard valve bonnet,equal percent type,RPTFE valve seat,norminal diameter DN50,norminal pressure PN25,CF8 material. | ||
Working Principle
Working principle of pneumatic control valvePneumatic control valve drives itself by compressed air as power source , cylinder as actuator and with some attachments ,such as electric-pneumatic positioned、converter、 solenoid valve、lock up valve and so on. It realizes the switch quantity or proportional adjustment, and receives the control signal of industrial automation control system to complete regulating the flow 、pressure 、temperature and other various process parameters of pipeline medium. Pneumatic control valve has characteristics of simple controlling, quick response, and intrinsically safe without additional explosion prevention measure.So sometimes, Air to open type is also called Fail to Close/ FC type. Air to close type‘s movement direction is just the reverse of Air to open type. When the air pressure increases, valve moves in the direction of closing; when air pressure decreases or disappears, valve moves in the direction of opening or until fully open. So sometimes it’s called Fail to Open /FO. Pneumatic control valve belongs to which type is according to positive and negative effects of the actuator and different assemble ways of valve structure.For example, a heating furnace combustion control, the control valve is installed in the fuel pipe, according to the temperature of furnace or the heated material in furnace exit to control the supply of fuel. At this time, Air to open type valve is safer, because once stop the air supply, It’s more suitable in closed position than in fully open position for valve.Valve positioner is the main accessory of control valve, it accepts the regulator output signal, and then controls the pneumatic control valve by its output signal, when control valve moves, the displacement of valve stem feedback to valve positioner through mechanical device, valve position condition will be sent o the upper system through the electrical signal . Valve positioner can increase the output power of control valve, reduce the transmission lag of control signal, speed up movement of valve stem, improve the linearity of valve, overcome the friction of valve stem and eliminate the influence of unbalanced force, so as to ensure positioning rightly. Actuator has pneumatic actuator, electric actuator, straight stroke and stroke.
