固定球阀使用说明书

1、SUNGO VALVES GROUP CO.,LTDInstallation, Operation & Maintenance Manual TRUNNION BALL VALVE1. Purpose and SpecificationThis products is our company according to the API 6D/API 608 designs and manufactures of steel pipeline trunnion ball valve, It is used for liquid,gas etc tubing line open or clo

2、se.The main advantages include: Reliable sealing structure、Thechnology advanced、Small liquid resistance、Flexible open and close、Long service life、Safe reliabe、Convienient maintance etc. This kind of ball valve is widely utilized in Petroleum、Chemical industry、refinement、Steel and iron、papermaking, m

3、edicine etc.Performance SpecificationPressure RatingClass 150 (PN20)Class 300 (PN50)Class 600 (PN100)Shell test3.07.715.3MPaSeal test2.25.711.3Air test0.6Suitable temperatureTo detailed material selectedSuitable mediaTo detailed material selected2 The main adoption standards2、1 Design conform to API

4、 6D/API 6082、2 Flange conform to ASME B16.5/ ASME B16.472、3 Face to face conform to ASME B16.102、4 Temperature-class conform to ASME B16.342、5 Test conform to API 6D2、6 Fire safe conform to API 607/API 6Fa2、7 Wetted parts material conforms to NACE MR 0175 (If required)3 Structure Characteristic &

5、; principle of work3、1： Fire safety 、antistatic structureFire safety structure: Installs the fire safety sealing ring in between ball and seat ,After the seat burning loss, the medium and the spring will push the seat support rings fire safety sealing ring to the ball, then forms the metal to metal

6、structure, so as to ensure the safety of the system and conform to API 607/API 6FA.Anti-static structure: Installs the anti-static spring in between the stem and the ball. Can effectively exclude the electrostatic3、2 Blow-out proof stem structure: the stems design is blow-out proof structure, the up

7、per cover and the screw can fix the stem, even in the valve cavitys pressure abnormal rising situation, also can guarantee the stem can not blow out by the medium. 3、3 Double block and drain structure: When the valve is closed, the seat of the upstream and downstream can block the fluid, The valves

8、cavitys contamination can be drain.3、4 Self-pressure relief: the medium lumen would press the valve seat backwards through its own thrust force to realize self pressure relief for the safety of the body if some abnormal pressure-rise should happen caused by the gasification of the liquid medium deta

9、ined in the valve pocket from temperature rise. 4 Product structure diagram5 Maintenance, Installation and Using5.1 The valve can be installed anywhere, but it must be easy to maintain, repair and operate.5.2 Before installing, should check the products marks whether to meet the field operating requ

10、irements.5.3 Before installing, should check the valves inner cavity and seal surface. Dont allow any dirt .should meet the installation requirements. 5.4 Before installing should check the valve in the process of open or closed ,whether there is the phenomenon of jamming、if the bolt nut is loosenin

11、g、whether the packing is pressed etc. 5.5 The valve should be stored in the dry and well ventilated room, should be blocked at both ends of the passage and the valve should be totally open, dont allow to stack.5.6 For the long time storages valves ,should be regular inspected , cleared the dirt and

12、spreaded the anti-corrosive grease on the machined surface.5.7 In the pipeline system operation, the valve only can open or close, dont allow to make the adjustment to use. 6 Possible Malfunction& its solutionPossibleMalfunctionCause & analysis SolutionStem unhandy turning1. Over tight of th

13、e packing2.Stem surface roughness does not conform to the drawings requirements or the product has the contamination3.Stem occurs curving1. Adjusting packing gland nut.2. Stem surface roughness should conform to drawings requirements. Cleaning the feculence3. Adjust the stem.Leakage on sealing surfa

14、ce1.Preload force insufficiency2.Sealing surface has damage ( For example:Indentation flaw 、abrasion etc)3.Between sealing surface , there is feculence.4.Has not full opened or closed1. Readjust of the preload force2. Repair sealing surface or replace the sealing pair 3.Open the valve and clean

15、 the feculence.4. Switch should be consistent with position indicators markingLeakage on packing1. Packing does not be compressed2. Packing quantity is not enough3. Packing were out of date4. Stem roundness exceeded tolerance, has defect of scratch、reticle、hacking etc.1. Recompress the packing2. Add the packing quantity3. Replace the packing4. Repair the stem or replace the