Double Block & Bleed Ball Valve, Trunnion Type, 2-48 Inch

Trunnion Ball Valve Double Block & Bleed
 
Trunnion Ball Valve DBB Design
Double Block and Bleed Trunnion Ball Valve
Double Block & Bleed Ball Valve
 
Our trunnion ball valves with Double Block and Bleed (DBB) design feature dual sealing systems. When closed, both sealing systems ensure a leak-tight seal simultaneously. The valve body includes a middle cavity situated between the two sealing systems, which is equipped with an interface to allow for medium pressure discharge.
 
SIZE RANGE AND PRESSURE CLASS
 
Size from 2 Inch to 48 Inch (DN50 - DN1200)
Pressure from 150 LBS to 2500 LBS (PN16 - PN420)
 
DESIGN STANDARDS
 
Design / Manufacture as per the standards: API 6D, ASME B16.34, DIN 3357, EN 13709, GB/T 12237, BS 5351, JIS B2071
Face to Face Length (Dimension) as per the standards: ASME B16.10, EN 558-1 Gr. 14 (DIN 3202-F4), DIN 3202-F5, DIN 3202-F7, BS 5163
Flange Dimension according to the standards: ASME B16.5, EN 1092-1, BS 4504, DIN 2501,
Flanged to ASME B16.5 (2 - 24 Inch) and ASME B16.47 Series A / B (26 Inch and above) Clamp / Hub ends on request.
Testing according to the standards: API 598, API 6D, EN 12266-1, EN 1074-1, ISO 5208, DIN2401, JIS B2003
 
TECHNICAL FEATURES
 

• Materials: Cast Steel or Forged Steel
• Port Options: Full Bore or Reduced Port
• Body Construction: Two-Piece or Three-Piece, Split Body, Side Entry Design
• Stem Design: Stem separated from the ball to avoid side load
• Sealing: Double Block and Bleed (Two SPE Seats)
• Safety Features: Fire Safe Design, Multiple Stem Sealing, Automatic Release
• Maintenance: Body Vent and Drain, Emergency Seat & Stem Sealant Injection System
• Performance: Double Piston Effect, Self-Relieving Seat
• Design Features: Anti-Provision Design, Anti-Static Device, Back-Seated Blowout Proof Stem

 
CONSTRUCTION MATERIALS
 
General Cast Carbon Steel:
ASTM A216 WCB, WCC, WCA, GP240GH 1.0619 / GS-C25,
ASTM A105, C22.8 / P250GH (EN 1.0460/1.0432)
 
Low Temperature Carbon Steel (LTCS):
ASTM A352 LCB, LCC, LCA, GS-CK25
ASTM A350 LF2, TStE 355 / P355QH1 (EN 1.0571/1.0566)
 
Alloy Steel:
ASTM A352 LC1, LC2, LC2-1, LC3, LC4, LC9, ASTM A743 CA6NM
GS-CK16, GS-CK24, GS-10Ni6, GS-10ni14
ASTM A350 LF1, LF3, LF5, LF6, LF9, LF787
 
High Temperature Steel (Chrome Moly) / Alloy Steel:
ASTM A217 WC1, WC6, WC9, C5, C12, C12A
GS-22Mo4 / G20Mo5 (EN 1.5419), GS-17CrMo55 / G17CrMo5-5 (EN 1.7357)
ASTM A182 F1, 15Mo3 / 16Mo3 (EN 1.5415)
ASTM A182 F11, 13 CrMo4-4 / 13CrMo4-5 (EN 1.7335)
ASTM A182 F22, 10CrMo9-10 / 11CrMo9-10 (EN 1.7383/1.7380)
ASTM A182 F91, X10CrMoVNb9-1 (EN 1.4903)
 
Austenitic Stainless Steel / Alloy Steel:
UNS S30400, S30403, S30409, ASTM A351 CF8, CF3, CF10
G-X6CrNi189 / GX5CrNi19-10 (EN 1.4308)
UNS S31600, S31603, S31609, ASTM A351 CF8M, CF3M. CF10M
GX5CrNiMo19-11-2 / G-X6CrNiMo18.10 (EN 1.4408)
UNS S34700, S34709, ASTM A351 CF8C
G-X5CrNiNb189 / GX5CrNiNb19-11 (EN 1.4552)
AISI 316Ti, X6CrNiNo17122 / X6CrNiMoTi17-12-2 (EN 1.4571)
ALLOY 20 / UNS N08020, ASTM A351 CN7M
ASTM A182 F304 X5CrNi1810 / X5CrNi18-10 (EN 1.4301)
ASTM A182 F304L X2 CrNi 19 11 (EN 1.4306)
ASTM A182 F316 X5CrNiMo 17 12 2 / X5CrNiMo17-12-2 (EN 1.4401)
ASTM A182 F316L X2 CrNiMo 17 13 2 / X2CrNiMo17-12-2 (EN 1.4404）
ASTM A182 F316 Ti X6 CrNiMoTi 17 12 2 / X6CrNiMoTi17-12-2 (EN 1.4571)
ASTM A182 F321 X6 CrNiTi 18 10 / X6CrNiTi18-10 (EN 1.4541)
ASTM A182 F347 X6CrNiNb1810 / X6CrNiTi18-10C (EN 1.4550)
ASTM A182 F44 (6MO) (EN 1.4547)
ASTM A182 F20 * (ALLOY 20)
 
Ferritic-Austenitic / Duplex / Super Duplex Stainless Steel:
UNS S31803 / S32205 (Duplex 2205), ASTM A890/A995 GR.4A (UNS J92205) / A351 CD3MN
UNS S32750 (Super Duplex 2507), ASTM A890 / A995 GR.5A / A351 CE8MN (CD4MCu)
UNS S32760, ASTM A890 / A995 GR.6A (CD3MWCuN)
ASTM A182 F51, X2 CrNiMoN 22 5 3 / X2CrNiMoN22-5-3 (EN 1.4462)
ASTM A182 F52 (EN 1.4460)
ASTM A182 F53, X2CrNiMoCuN 25.6.3 (EN 1.4410)
ASTM A182 F55, X2CrNiMoCuWN 25.7.4 (EN 1.4501)
ASTM A182 F60 (EN 1.4462)
 
Other Materials:
Alloy 20 ASTM B462 / UNS N08020
Monel 400 / UNS N04400 ASTM B564-N04400 / A494 M35-1 NiCu30Fe (EN 2.4360)
Nickel Alloy 904L / UNS N08904 X1NiCrMoCu25.20.5 (EN 1.4539)
Inconel 625 / UNS N06625 / ASTM B564-N06625 / ASTM A494-CW6MC
NiCr22Mo9Nb (EN 2.4856)
Inconel 825 / UNS N08825 / ASTM B564-N08825 / ASTM A494 CU5MCuC (EN 2.4858)
NiCr21Mo (EN 2.4858)