ASTM A350 LF2 DBB Ball Valve, API 6D, 300 LB, 1-1/2 x 1/2 IN

Key Specifications / Features

Model No.: JSC-240110-FBV-01

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Our ASTM A350 LF2 Double Block and Bleed (DBB) ball valve, manufactured in China, adheres to API 6D standards. This valve has a compact size of 1-1/2 x 1/2 inches, making it suitable for Class 300 LB applications. It is designed as a floating type with a soft seat, bolted bonnet, and three-piece construction. The valve is equipped with a lever for easy operation. Trust in the reliability and performance of our DBB ball valve for your industrial needs.
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Detail Information

Double Block & Bleed Valve

Valve description: Floating Ball valve, double block and bleed, dual ball, twin ball, soft seat, bolted bonnet, three pieces, forged carbon steel

Body Material: ASTM A350 LF2
Nominal Diameter: 1-1/2 Inch x 1/2 Inch
Nominal Class: Class 300 LB
Design / Manufacture: API 6D
Face to Face: ASME B16.10
Test and Inspection: API 598
Metal Seat: PTFE
Mode of Operation: Lever
End Connection: RF x NPT

Double Block & Bleed Valve can be made with full bore and reduced bore, and as per option, can be made of forged steel and cast steel.
When the pipeline medium needs to be cut off, it is only necessary to rotate one of the balls to cut off the pipeline medium, and the other sphere can only act after the valve seat sealing component of the sphere fails.
The two ball bodies can also be operated alternately to achieve double insurance and double cut-off effects on pipelines. The two ball valves are integrally formed, so there is no need to adjust the flow center line of the two ball valves when installing,
It also reduces one connection point and one leakage point in the direct series installation of two ball valves, which is safe and reliable.

We also manufacture the following ball valves:
Double Block & Bleed Ball Valve
Twin Ball Valve, Twin Balls Ball Valve
Double Block & Bleed Piping Ball Valves 
DB&B VALVE Twin Ball design
DBB double ball valve


Size Range: 1/2 Inch - 8 Inch (DN15-DN200)
Pressure Range: Class 150 LB – 1500 LB (PN16-PN240)


Design / Manufacture: API 6D, ASME B16.34, DIN 3357, EN 13709, GB/T 12237, BS 5351
Face to Face Length (Dimension): MFG, API 6D, ASME B16.10, EN 558-1, DIN 3202, JIS B 2002
Flanged Dimension: ASME B16.5, EN 1092-1, BS 4504, DIN 2501
Flanged to ASME B16.5 (2 Inch - 24 Inch) and ASME B16.47 Series A / B (26 Inch and above) Clamp / Hub ends on request.
Butt Welding Ends: ASME B16.25, EN 12982, GB/T 12224
Testing: API 598, API 6D, EN 12266-1, EN 1074-1, ISO 5208


Split body, side entry design.
Cavity pressure Self-relief
Reduced Port or Full Bore
Forged Steel or Cast Steel
Space and weight savings
Easy maintenance and handling
Available in Floating ball and trunnion mounted ball
Anti-Static Device
Anti-Blowout Stem Design
Executions available


General Cast Carbon Steel:
ASTM A216 WCB, WCC, WCA, GP240GH (1.0619 / GS-C25)
ASTM A105, C22.8/P250GH (1.0460/1.0432)

Low Temperature Carbon Steel (LTCS):
ASTM A350 LF2, TSTE355 / P355QH1 (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 (1.5419), GS-17 CrMo5-5 / G17 CrMo5-5 (1.7357) 
ASTM A182 F1, 15Mo3 / 16Mo3 (1.5415)
ASTM A182 F11, 13 CrMo4-4 / 13CrMo4-5 (1.7335)
ASTM A182 F22, 10CrMo9-10 / 11CrMo9-10 (1.7383/1.7380)
ASTM A182 F91, X10CrMoVNb9-1 (1.4903)

Austenitic Stainless Steel/Alloy Steel:
UNS S30400 (S30403) (S30409), ASTM A351 CF8, CF3, CF10
G-X6CrNi189/ GX5CrNi19-10 (1.4308)
UNS S31600 (S31603) (S31609), ASTM A351 CF8M, CF3M, CF10M
GX5CrNiMo19-11-2/G-X6CrNiMo18.10 (1.4408)
UNS S34700 (S34709), ASTM A351 CF8C
G-X5CrNiNb189/GX5CrNiNb19-11 (1.4552)
AISI 316Ti, X6CrNiNo17122/ X6CrNiMoTi17-12-2 (1.4571)
ALLOY 20 / UNS N08020, ASTM A351 CN7M
ASTM A182 F304 X5CrNi1810 / X5CrNi18-10 (1.4301)
ASTM A182 F304L X2CrNi19-11 (1.4306)
ASTM A182 F316 X5CrNiMo 17 12 2 / X5CrNiMo17-12-2 (1.4401)
ASTM A182 F316L X2CrNiMo 17 13 2 / X2CrNiMo17-12-2 (1.4404)
ASTM A182 F316Ti X6CrNiMoTi 17 12 2 / X6CrNiMoTi17-12-2 (1.4571)
ASTM A182 F321 X6CrNiTi 18 10 / X6CrNiTi18-10 (1.4541)
ASTM A182 F347 X6CrNiNb18-10 / 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 (Duplex 2205), ASTM A890/A995 GR.4A (J92205)/ ASTM A351 CD3MN
UNS S32750 (Super Duplex 2507), ASTM A890/A995 GR.5A / ASTM A351 CE8MN (CD4MCu)
UNS S32760, ASTM 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) / ASTM 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 / ASTM A494 CU5MCuC (2.4858), NiCr21Mo (2.4858)


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