SUNGO V ALVES GROUP CO.,LTD Installation, Operation & Maintenance Manual TRUNNION BALL V ALVE
1. Purpose and Specification
This 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 close.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, medicine etc.
Performance Specification
2 The main adoption standards
2、1 Design conform to API 6D/API 608
2、2 Flange conform to ASME B16.5/ ASME B16.47
2、3 Face to face conform to ASME B16.10
2、4 Temperature-class conform to ASME B16.34
2、5 Test conform to API 6D
2、6 Fire safe conform to API 607/API 6Fa
2、7 Wetted parts material conforms to NACE MR 0175 (If required)
3 Structure Characteristic & principle of work
3、1：Fire safety 、antistatic structure
Fire 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 ring’s fire safety sealing ring to the ball, then forms the metal to metal 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 electrostatic
3、2 Blow-out proof stem structure: the stem’s design is blow-out proof structure, the upper cover and the screw can fix the stem, even in the valve cavity’s 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 valve’s cavity’s 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 detained in the valve pocket from temperature rise.
4 Product structure diagram
5 Maintenance, Installation and Using
5.1 The valve can be installed anywhere, but it must be easy to maintain, repair and operate.
5.2 Before installing, should check the product’s marks whether to meet the field operating requirements. 5.3 Before installing, should check the valve’s inner cavity and seal surface. Don’t 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 loosening、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, don’t allow to stack.
5.6 For the lon g time storage’s valves ,should be regular inspected , cleared the dirt and spreaded the anti-corrosive grease on the machined surface.
5.7 In the pipeline system operation, the valve only can open or close, don’t allow to make the adjustment to use.
6 Possible Malfunction& its solution
Related Catalog.。