Side Entry Trunnion Type Ball Valve
Trunnion Mounted ball valve are suitable for using on various kinds
of pipelines of Class 150 to Class 2500, PN16~PN160, JIS 10K~ JIS
20K to cut off or turn on the pipeline medium, of which the
operation types include worm gear, manul, pneumactic or electric
actuators, being in general of flange connection, and butt welding
end connection as well.
| Ball Valve Type | Design and Manufacture | Face to Face/End to End | Flange Dimensions | Pressure Temperature Rating | Inspection and Test |
| Split Flange ball valve | BS5351 | ANSI B16.10 | ANSI B16.5 | ANSI B16.34 | API6D |
| Fixed flange ball valve | API6D/API608 | API6D | ANSI B16.47 | ANSI B16.34 | API598 |
Main Material
| Body material | Trim material | Seal material | Gasket/Packing |
| WCB/LCB/CF8/CF8M/CF3/CF3M,ETC. | SS410, SS420, SS304, SS316,ETC | PTFE, RPTFE, PEEK, PPL, ETC. | GRAPHITE. PTFE, PPL. ETC.
|
Sealing Options
Soft seat: Metal to Metal O-Ring seal
Simple structure reliable sealing Applicable to particulate
Reliable sealing low torque meet customers' high
wide application low cost. media conditions sealing reliability and
low torque requirements
Blow-out proof stem:
The stem is made separately from the ball with integral T-type
round shoulder, retained by bland .(other designs are Available on
request)
Anti-static device:
Spring plus graphite type anti-static device are applied between
the ball ,stem, gland Flange and body to keep the electrical
Continuity between all the metallic components . And ensure the
resistance lower than the most severe service requirement.
Grease injection device
For DN150 (NPS 6) & larger the stem and the valve seat are provided
with a sealing grease injection device, For DN125 & smaller, we can
provide the sealing grease injection device according to customer
requirements. When the O-ring is damaged by accident, by injected
sealant sealed to prevent the media through the valve seat ring and
stem leaks.
Fire safe design
Coosai ball valves ensures 100% pass of the fire safe test. As
Coosai Ball valve applies two sealed design via O-ring seals and
metal graphite spiral wound gasket. When the valve is on fire,
non-metallic materials such as PTFE seat seals, gaskets ,O-ring
seals,rubber etc will be damaged, meanwhile the outer layer of
metal graphite spiral wound gasket provides a secondary seal. When
the soft seat is burned, metal seat will automatically form a metal
seal with ball under the urging of the spring which will
effectively control the internal leakage and external leakage.
Valve design fully accords with API 607, API 6FA, BS 6755, JB / T
6899 and other standards,
DOUBLE BLOCK & BLEED (DBB)
When the ball is in the closed position, each seat seals off the
process medium independently at the same time between the up/down
stream and body cavity, it allows bleeding the trapped cavity
pressure (DBB) through drain and vent valve. The double block and
bleed function make it possible to flush the valve under pressure
and verify that the seat are sealing properly.
DOUBLE ISOLATION & BLEED (DIB)
Double piston effect seat, medium pressure, both upstream and
downstream as well as in the body cavity, creates a resultant
thrust that pushes the seat ring against the ball, valve with
double piston effect seat rings require a cavity pressure relief to
reduce the build-up of over pressure in the body cavity.
Design Data
Design standard: API 6D,DIN3357-1 , EN12516-1
Face to Face standard: API6D, ASME B16.10, DIN3202
Connecting Standard: ASME B 16.5, ASME B16.47, DIN 2543/4,ASME B
16.25
Test & Inspect Standard: API 6D ,API 598
Working Temperature: -196℃~610℃
Connection type: RF,RTJ,FF,BW.BSPT,NPT
Sour environment:NACE MR0175
Design Feature
1: Full bore or reduced bore
2: Two-piece or Three-piece body structure
3: Double Block & Bleed, Double isolation and
bleed(DIB-1&DIB-2)
4: Fire safe design(API 607)
5: Blowout-proof system
6: Anti-static design
7: Self cavity relief
8: Fugitive emission testing(optional)
The ball is fixed by trunnion and stem for size 4” &smaller.
Trunnion plate support for size 6” & larger
