Duplex Steel Ball Valve
31 products found
A duplex steel ball valve is a high-performance quarter-turn valve designed for reliable shutoff and flow control in aggressive and high-pressure environments, where both corrosion resistance and mechanical strength are critical. It is typically manufactured from duplex stainless steel grades such as ASTM A995 4A/5A (CD3MN, CD3MWCuN) or forged duplex grades like ASTM A182 F51 (2205) and F53/F55 (super duplex), which combine austenitic and ferritic phases to deliver exceptional resistance to pitting, chloride stress corrosion cracking, and erosion. This dual-phase microstructure also provides significantly higher yield strength compared to standard stainless steels like 316, making duplex ball valves ideal for offshore oil and gas systems, desalination plants, chemical processing, and marine applications. Duplex steel ball valves remain a preferred solution for critical service conditions, and they are commonly sourced through direct-from-factory engineering supply networks that connect global buyers with certified China valve manufacturers specializing in duplex material systems.
Baltic Valve Co., Ltd.
Duplex Steel Ball Valve, ASTM A182 F51, 8 Inch, Class 150 LB, RF
Baltic Valve Co., Ltd.
Duplex Steel Ball Valve, API 6D, 8 x 6 Inch, 2500 LB, RTJ
Wenzhou Unique Valve Co., Ltd.
Duplex Steel Ball Valve
Wenzhou Unique Valve Co., Ltd.
Fire Safety Ball Valve
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Cast Steel Trunnion Mounted Ball Valves: API 608, API 6D
Model Number: TMBV CS API 01
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Metal Seated Ball Valves: API 6D
Model Number: XH 13 MMSBV 01
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Forged Floating Ball Valves: API 6D
Model Number: FBV FS API 01
medvalve
Floating Ball Valve, API 6D, ASME B16.34, BS 5351, DIN 3202
medvalve
Top Entry Trunnion Ball Valve, API 6D, 20IN, CL600, RF
medvalve
One-piece Flanged Ball Valve, 1/2-6 Inch, 150-2500 LB
medvalve
Forged Steel Full Port Ball Valve, 3/8-4 Inch, 150-300 LB
medvalve
Two-piece Ball Valve, API 6D, BS 5351, ASME B16.34, DIN 3202
medvalve
One Piece Ball Valve, 1/4-2 Inch, 150-2500 LB
medvalve
High Temperature Trunnion Ball Valve, 1/2-40 IN, CL150-2500
medvalve
Cryogenic Cast Steel Ball Valve, 1/2-40 Inch, 150-2500 LB
ZHEJIANG VERVO VALVE CO., LTD
Duplex Steel Trunnion Ball Valve, 10 Inch, 300 LB, API 6D
ZHEJIANG VERVO VALVE CO., LTD
API 6D Floating Ball Valve, 2-8 Inch, 150, 300, 600 LB
ZHEJIANG VERVO VALVE CO., LTD
ASTM A182 F51 Ball Valve, Two-piece, 1/2 IN, 150 LB, API 608
Bosseal Valves (Suzhou) Co., Ltd.
UNS S32205 Floating Ball Valve, 3/4 Inch, 2000 PSI, NPT
Model Number: 0.75BB8N4A
XIAMEN QISHINE IMP.& EXP. CO., LTD.
Trunnion Mounted Ball Valve, Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
Model Number: QS 23 V 07
XIAMEN QISHINE IMP.& EXP. CO., LTD.
3 Pieces Forged Ball Valve, API 598, Alloy Steel, Duplex Steel
Model Number: QS 23 V 25
XIAMEN QISHINE IMP.& EXP. CO., LTD.
Forged Ball Valve, API 6D, Alloy Steel, Duplex Steel
Model Number: QS 23 V 27
XIAMEN QISHINE IMP.& EXP. CO., LTD.
API 6D Forged Ball Valve, 2-24 Inch, Carbon, Stainless Steel
Model Number: FGBK-23-V-27
Zhejiang Magpie Sealing Technology Co., Ltd.
3-Way Ball Valve, Carbon, Stainless, Duplex Steel, 1/2-6 Inch
Model Number: MV-20250612-LTMSBV-04