Product Details

Trunnion Ball Valve DBB Design

Double Block and Bleed Trunnion Ball Valve

Double Block & Bleed Ball Valve

CGV trunnion ball valves DBB designed is a valve with two sealing systems. When in the closed position, the two sealing systems can maintain a sealed state at the same time. The valve body in the middle cavity (between the two sealing systems) has an interface for discharging medium pressure.

SIZE RANGE AND PRESSURE CLASS

Size from 2” to 48” (DN50-DN1200)

Pressure from 150LBS to 2500LBS (PN16-PN420)

DESIGN STANDARDS

Design / Manufacture as per the standards

API 6D; ASME B16.34; DIN 3357; EN 13709; GB/T12237; BS5351

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; BS5163

Flange Dimension according to the standards

ASME B16.5; EN 1092-1; BS4504; DIN2501;

Flanged to ASME B16.5 (2” ~ 24”) and ASME B16.47 Series A / B (26” and above) Clamp / Hub ends on request.

Testing according to the standards

API 598; API 6D; EN 12266-1; EN 1074-1; ISO5208

TECHNICAL FEATURES

Cast steel or Forged Steel

Full Bore or Reduced Port

Two- OR Three-Piece body construction, Split body, side entry design

Stem separated from the ball, no side load on the stem

Double block and bleed (Two SPE seats)

Fire Safe Design

Multiple Stem Sealing

Automatic release

Body vent and drain

Double piston effect

Self-relieving seat

emergency seat & stem sealant injection system

Anti-provision Design

Anti-Static Device

Back-seated blowout proof stem

CONSTRUCTION MATERIALS

General Cast Carbon Steel

A216 WCB (WCC, WCA), GP240GH (1.0619/GS-C25),

A105, C22.8/ P250GH (1.0460/1.0432)

Low Temperature Carbon Steel (LTCS), LCB (LCC, LCA), GS-CK25

ASTM A350 LF2, TStE355 / P355QH1 (1.0571/1.0566)

Alloy Steel:

A352 LC1/LC2/LC2-1/LC3/LC4/LC9/, 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:

A217 WC1/ WC6/ WC9/C5/C12/C12A,

GS-22Mo4/ G20Mo5 (1.5419); GS-17CrMo55/ G17CrMo5-5 (1.7357)

ASTM A182 F1, 15Mo3 16Mo3 (1.5415)

ASTM A182 F11, 13 CrMo 4 4/ 13CrMo4-5 (1.7335)

ASTM A182 F22, 10CrMo 9 10 / 11CrMo9-10 (1.7383/1.7380)

ASTM A182 F91, X10CrMoVNb9-1 (1.4903)

Austenitic Stainless Steel/Alloy Steel:

UNS S30400 (S30403) (S30409), A351 CF8/CF3/CF10

G-X6CrNi189/ GX5CrNi19-10(1.4308)

UNS S31600 (S31603) (S31609), A351 CF8M/CF3M/CF10M

GX5CrNiMo19-11-2/G-X6CrNiMo18.10 (1.4408)

UNS S34700 (S34709), A351 CF8C

G-X5CrNiNb189/GX5CrNiNb19-11(1.4552）

AISI316Ti; X6CrNiNo17122/ X6CrNiMoTi17-12-2(1.4571)

ALLOY 20# / UNS N08020, A351 CN7M

ASTM A182 F304 X5CrNi1810/ X5CrNi18-10 (1.4301)

ASTM A182 F304L X2 CrNi 19 11 (1.4306)

ASTM A182 F316 X5CrNiMo 17 12 2 / X5CrNiMo17-12-2 (1.4401)

ASTM A182 F316L X2 CrNiMo 17 13 2 / X2CrNiMo17-12-2 (1.4404）

ASTM A182 F316 Ti X6 CrNiMoTi 17 12 2 / X6CrNiMoTi17-12-2 (1.4571)

ASTM A182 F321 X6 CrNiTi 18 10 /X6CrNiTi18-10 (1.4541)

ASTM A182 F347 X6CrNiNb1810/ X6CrNiTi18-10C (1.4550)

ASTM A182 F44 (6MO) (1.4547)

ASTM A182 F20*(ALLOY 20#)

Ferritic-Austenitic / Duplex / Super Duplex Stainless Steel:

UNS S31803 /S32205 (Duplex2205), A890/A995 GR.4A (J92205) /A351 CD3MN

UNS S32750 (Super Duplex2507), A890/A995 GR.5A / A351 CE8MN (CD4MCu)

UNS S32760, A890/A995 GR.6A (CD3MWCuN)

ASTM A182 F51, X2 CrNiMoN 22 5 3 / X2CrNiMoN22-5-3 (1.4462)

ASTM A182 F52, (1.4460)

ASTM A182 F53, X2CrNiMoCuN 25.6.3 (1.4410)

ASTM A182 F55, X2CrNiMoCuWN 25.7.4 (1.4501)

ASTM A182 F60, (1.4462)

Other materials

Alloy 20 ASTM B462 / UNS N08020

Monel 400 / UNS N04400 ASTM B564-N04400 / A494 M35-1 NiCu30Fe (2.4360)

Nickel Alloy 904L / UNS N08904 X1NiCrMoCu25.20.5 (1.4539)

Inconel 625 /UNS N06625 /ASTM B564-N06625 /ASTM A494-CW6MC

NiCr22Mo9Nb (2.4856)

Inconel 825 /UNS N08825 /ASTM B564-N08825 /A494 CU5MCuC (2.4858)

NiCr21Mo (2.4858)

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