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1、D341W1PVentilation Butterfly ValveInstallation and Using Manual* CO.I. Product OverviewThis butterfly valve is made by welded steel plate, which features small size, light weight and easy-to-install.This valve also features small drive torque, flexible open and close, and easy operati on. The large
2、gap betwee n plate and valve body can effectively preve nt stuck caused by structure variatio n derived from temperature cha nge. Desig ned without connecting rods and bolts and so on, it reliable and for Ion gtime usin g. It can be in stalled in differe nt working positi ons without bee n in flue n
3、eed by the flow directi on of the mediums.This butterfly valve is a kind of non-closed butterfly valve, which can be used in tubes of rated pressure O.IMpa widely used in industries such as construction material, metallurgy, mining, power, etc., for connecting, opening and closing the tube, or adjus
4、ting the flow.II. Performance Parameters and Relevant Standards of ValveRated Pressure0.050.10 MpaTest pressure for the shell: liquid in normal temperature (medium: water)1.5 times of rated pressureLeakage rate 3%Applicable mediumsAir, dusty gas, flue gases, etc.Applicable temperature for the medium
5、s-10300CDesig n sta ndardsGB/T 12238-2008 Flanged and wafer resilie nt seal butterfly valves;JB/T 8692-1998 Butterfly valves for gas fluePressure test ingGB/T 13927-2008 In dustrial valve -Pressure test ingIII. Material List of the Main Components of the ValveComp onent NameMaterial NameComp onent N
6、ameMaterial NameValve body304 stai nl ess steelValve stem304 sta in less steelPlate304 stai nl ess steelFilling materialflexible graphiteIV. Structure Sketch of the ValveV. Size Table for Valve Connection and Appearance Structure#Nominal diameter DNOuter diameter of flange DDiameter of the central r
7、ound of bolt bore D1Diameter of the connecting bulge D2flange thickn ess bLength LBore No.- bore diameter N - dhWeight: KgmmInch0.1MPa1500206005705021419024 146502650267507206541621036 1468031100441200117011121825048 14820041200481300127012132025060 148250VI. Function PrincipleThe manual butterfly v
8、alve is applied with worm-gear drive unit. Manually rotate the han d-wheel to have the worm assembly to drive the driv ing shaft for an gular displaceme nt, then the force will be passed to the plate for synchronous rotation movement, thus to achieve full-opening, full-closing or freely adjusting. T
9、he opening degree of worm-gear unit and plate are synchronous with the positi on of the in dicati ng switch. The users can con trol the ope ning degree of plate accord ing to the in dicated positi on, thus to achieve adjustme nt. Mea nwhile, the worm-gear assembly has mecha ni cal limiti ng un it, w
10、hich can correctly limit the position of worm-gear when the valve is full-opened or full-closed, thus to protect the valve from damage.VII. Installation and DebuggingThe valve shaft should be horizontally placed no matter the valve is installed horizontally or vertically. The driving unit is not all
11、owed to be used as lifting unit, and must not be damaged.It sa must to clean the inner chamber of the valve before installation, and no foreign matters and dirt are allowed to adhere to the inner chamber.Open and close the valve for one cycle manually before installation. Make proper adjustment acco
12、rding to the actual working system (the valve is already adjusted to standard before leaving the factory). If no problem is found in above operation, fully close the valve and install it to the system.No extra auxiliary lever is allowed to be attached to the hand-wheel. When the hand-wheel is rotate
13、 along clockwise, the valve will be closed, otherwise, the valve will be opened. The opening angle range of the valve plate is 09.0The installation of flanged valve is as the diagram. After added the sealing pad, evenly tighten the connecting bolts.It sa mus to conduct examination on the overall per
14、formance after the debugging: when the valve is in full-opened or full-closed position, the motion control unit should correctly limit the position. The opening degree indicator should show the actual opening status of the valve.It s a must to verify the quality certificate before installation to ma
15、ke sure that the pressure level and other performances of the valve are suitable for the requirements of the tube system. Then install the valve correctly.VIII. Transportation and StorageAvoid impacting on the valve during transportation. The valve should be in full-closed status during transportati
16、on, thus to avoid damage of plate and driving unit.When the valve is placed horizontally and been transporting, the driving unit and part should be idle, so as to protect the driving shaft from deformation caused by bearing exceed force.The driving unit and part should be treated to prevent humidity
17、 and rain.The valve should be stored in dry room. No open air storage or stack are allowed. For longtime storage, please pay attention to following: 1) the valve should be in closed status; 2) add lubricating oil for each driving part; 3) conduct anti-humidity and anti-dust treatment for the driving
18、 unit.It a must to eve nly tighte n the n uts on connecting bolts of wafers and flan ges duri ng installation. The butterfly valve should be in right position. The deviation between the central line of the valve body and the central line of the tube should be within 3mm.IV. Installation Sketch Diagr
19、am1. Connecting bolts2. Actuati on unit3. Usertube4. Valve body5. Tube flange6. Seali ng padV. Maintenance, Checking and RepairCheck the running status of each driving part at regular interval.Replace the lubricating grease of worm-gear unit at regular interval, thus to protect its mecha ni cal part
20、 from damage.Check the sealing status of the valve spindle at regular interval. If there is sealing problem, please replace or add graphite filling material.VI. Ordering Instructions1. Please refer to the product sample to indicate the product specification, model, code ofselected actuator, as well
21、as the tech ni cal parameters (i.e. using temperature, worki ng con diti ons of the equipme nt, medium property, etc.) whe n you are orderi ng the products.2. If there is dema nd for special specificatio n, applicable medium or other requireme nts,please con tact our sales and tech ni cal departme nt for customizati on.