Double Block & Bleed Ball Valve Side Entry 300LB BW Ends
We are able to supply side entry trunnion ball valves designed to
conform to API 6D valve standard to meet the valve applications
requirements of the onshore and offshore Oil and Gas, Oil Refining
and Processing, and Petrochemical industries.
Side entry valves are designed as robust, severe service valves,
capable of withstanding operation at high pressure (ANSI #2500) and
to provide consistent and reliable zero shut off. These valves are
the ideal for emergency shutdown applications for hydrocarbon
service.
DESIGN AND FEATURES
Design Standard: API 6D Specification for Pipeline Valves (Ball)
Standard Sizes: DN25 to DN 600, 1” to 24”, Full and Reduced bore
(larger sizes on request)
Pressure rating: ANSI 150 thro’ to ANSI 2500 full rating
Temperature range: -196°C to +500°
Firesafe Standards: API 6FA Specification for Fire Test of Valves
Seat Leak Testing: ISO 5208, or ANSI/FCI 70-2 Class V and VI, or
other international testing standard.
Flange Connection: Flanged to ASME B16.5 (1” to 24”) or Buttweld to
ASME B16.25
Mechanical joints: Seal designs and materials to meet customer
specifications (dependent on application)
Top Flange: ISO 5211
Operation: Manual operation with gearbox or Automatic using an
actuator.
Materials of Construction: carbon steel, stainless steel, duplex
and super duplex stainless steel, Inconel, Monel, Hastelloy,
Incoloy and most commercially available forged/bar materials.
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
Ball valves ensures 100% pass of the fire safe test. As 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,
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
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.
| 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.
|
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
