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|Size::||NPS 2"~48"||Pressure Rating::||Class 150~2500, API 2000-15000|
|Material::||LF2, A105,F304, F316,F304L, F316L, F51 Etc||Design & Manufacturing Standard::||API 6D, API 6A, API 6DSS, BS 5351, ASME B16.34|
|Face To Face::||API 6D, ASME B16.10,||End Connection::||ASME B16.5, ASME B16.47, ASME B16.25|
|Test And Inspection::||ISO 5208, API598, API 6D,||Operation Method::||Manual ,Worm Gear, Electric Actuator, Pneumatic Actuator|
trunnion type ball valve,
top entry ball valve
DBB, DIB-1, DIB-2 Forging trunnion ball valve of 2"-48" CL150-2500
Kelite 3 piece Forged Trunnion Mounted Ball Valve is ideally suited for pipeline and other applications within the global energy infrastructure where zero leakage positive shutoff is critical. API Monogrammed and compliant with all relevant industry specifications, Kelite trunnion ball valves should be an integral component of your piping network.
KELITE steel ball valves are designed manufactured to provide maximum service life and dependability. All ball valves are full ported and meet the design requirements of American Petroleum Institute standard API 608&API 6D British standard BS 5351 and generally conform to American society of Mechanical Engineers standard ASME B16.34 valves are available in a complete range of body/bonnet materials and trims.
Range of Materials
Standard body/bonnet materials include nine grades of carbon, low alloy and stainless steel, for special applications they can be supplied in other grades of ally and stainless steel, there’s a full range of trim materials to match any service optional packing and gasket materials are available for a full range of service conditions.
HIGH TEMPERATURE SERVICE
Some valves do have operating temperatures that can be very dangerous to people or animals. To avoid any kind of injuries operators must ensure the valve surfaces that reach such temperatures are suitably protected against accidental contact.
Operators are recommended to always provide an efficient protection/insulation of the valve surfaces that may be touched by personnel and/or animals and that exceed, in lower or in higher, the human tolerable limits (as a suggestion use -4F through +140F).
LOW TEMPERATURE SERVICE
Prior to exposure to freezing temperatures, it is highly recommended the valve be drained. Water that may be trapped in the body cavity could freeze and impair the operation of the valve or damage the valve. If the valve has a grease fitting in the lower drain, a sufficient amount of antifreeze injected into the body cavity via the lower drain grease fitting will prevent accumulated water from freezing. It is also advisable to inject a sufficient amount of valve lubricant into the grease fittings of valve and operator (if present) prior to extended cold temperature exposure. Trapped water should be drained from stem extensions. Some stem extensions in the field are equipped with plastic plugs that can be removed to drain trapped water from the piped extension.
PROPER VALVE TESTING
Always perform an API 6D pressure test before re-installing the valve into the line to verify that the maintenance operation have been satisfactorily performed and to re-certify pressure containment capability of the valve.
There shall not be any leakage under the pressure when ball is partially open and both ends are blanked. Testing pressure is 1.5 times the maximum operating pressure. Test duration are 2min for 4” and under valves, 5min for 6” to 10” valves, 15min for 12” to 18” and 30min for 20” and larger.
HYDROSTATIC SEAT TEST
Valves are to be subjected to a hydrostatic seat test. There is to be no leakage under test pressure. Test pressure is to be applied to the appropriate end of the valve. Testing pressures 1.1 times maximum operating pressure. Test durations are 2min for 4” and under valves, 5min for 6” to 18” and 10mim for 20” and larger valves.
DOUBLE BLOCK AND BLEED (DBB) TEST
If the valve seats have DBB function, then the seat test shall be performed as follows:
SUPPLEMENTAL AIR SEAT TEST
|Product description||Side-mounted trunnion ball valve|
|Model||Forging trunnion ball valve|
|Nominal diameter||NPS 2～NPS 48|
|Operating pressure||CLASS 150～CLASS 2500|
|Design standard||API 6D,ISO 17292|
|Structural length||ASME B16.10|
|Connecting end||ASME B16.5,ASME B16.25|
|Test standard||API 598,API 6D|
|Operation method||Handle, worm, motor-drive unit, pneumatic drive unit|
|Application fields||Water, petroleum and natural gas|
|Other remarks 1||A locking device is provided to prevent misoperation of valve.|
|Other remarks 2||Valve stem flyout prevention structure design, to prevent accident due to flyout of valve stem caused by abnormal pressurization in the chamber|
|Other remarks 3||Fireproof and antistatic design|
|Other remarks 4||The valve stem and the valve seat are equipped with an injection system.|
|Other remarks 5||DBB (double block and bleed) function|
|Other remarks 6||Full bore of valve convenient for pigging, of small flow resistance and high flow capacity|