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ASTM A890 4A Butterfly Valve

52 products found

An ASTM A890 4A butterfly valve is a severe-service rotary valve cast from a specialized duplex stainless steel (Grade 4A/CD3MN) that features a perfectly balanced, 50/50 austenitic and ferritic crystalline structure. This unique dual-phase metallurgy combines the exceptional stress-corrosion cracking resistance of ferritic steel with the superior toughness and pitting resistance of austenitic stainless steel, yielding twice the mechanical yield strength of standard 316 grades. Purpose-built to endure highly aggressive process streams, this robust valve provides reliable, tight-shutoff isolation while resisting severe localized erosion and chloride-induced pitting in sour oil fields, chemical processing units, and seawater reverse osmosis systems. Through our streamlined B2B platform, global purchasing managers can easily access a vetted network of premium manufacturers in China to procure high-yield ASTM A890 4A duplex butterfly valves directly from the foundry source.

Showing 25-48 of 52 result(s)
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EN 593 Lug Butterfly Valves, API 609, A890 4A, CL300, 42 IN

Bosseal Valves (Suzhou) Co., Ltd.

EN 593 Lug Butterfly Valves, API 609, A890 4A, CL300, 42 IN

Model Number: 1862241

As a premier factory in China specializing in double offset butterfly valves, we offer products that...
API 609 Double Offset Butterfly Valve, CL150, 3 IN, A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

API 609 Double Offset Butterfly Valve, CL150, 3 IN, A890 4A

Model Number: 1862245

As a leading double flanged butterfly valve manufacturer from China, we offer high-performance valve...
Double Offset Butterfly Valve, A890 4A, 150 LB, 16 Inch

Bosseal Valves (Suzhou) Co., Ltd.

Double Offset Butterfly Valve, A890 4A, 150 LB, 16 Inch

Model Number: 1862252

As a leading provider of butterfly valves, we supply high-performance API 609 Category B butterfly v...
RPTFE Seated Butterfly Valve, ASTM A890 4A, 150 LB, 32 Inch

Bosseal Valves (Suzhou) Co., Ltd.

RPTFE Seated Butterfly Valve, ASTM A890 4A, 150 LB, 32 Inch

Model Number: 1862259

As a manufacturer of RPTFE seated butterfly valves, we produce high-quality valves following EN 593 ...
ASTM A890 4A Double Offset Butterfly Valve, CL300, 2-1/2 IN

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Double Offset Butterfly Valve, CL300, 2-1/2 IN

Model Number: 1862265

As China's leading flanged butterfly valve manufacturer, we offer high-performance valves designed t...
Double Offset Butterfly Valve, CL300 LB, 14 Inch, A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

Double Offset Butterfly Valve, CL300 LB, 14 Inch, A890 4A

Model Number: 1862272

As a leading provider of API 609 Category B butterfly valves, we offer high-performance solutions bu...
EN 593 RPTFE Seated Butterfly Valve, A890 4A, 300 LB, 30 IN

Bosseal Valves (Suzhou) Co., Ltd.

EN 593 RPTFE Seated Butterfly Valve, A890 4A, 300 LB, 30 IN

Model Number: 1862279

As a leading RPTFE seated butterfly valve manufacturer, we produce high-performance valves designed ...
Soft Seated Butterfly Valves, CL150, 10 IN, EN 593, A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

Soft Seated Butterfly Valves, CL150, 10 IN, EN 593, A890 4A

Model Number: 1862291

We supply high-quality double-offset butterfly valves designed to meet API 609 Category B standards....
Double Offset Butterfly Valve, EN 593, CL150, 26 IN, A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

Double Offset Butterfly Valve, EN 593, CL150, 26 IN, A890 4A

Model Number: 1862298

As a premier fabricator of EN 593 butterfly valves, we offer a high-performance 26-inch model that m...
ASTM A890 4A Double Offset Butterfly Valve, CL150, 48IN

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Double Offset Butterfly Valve, CL150, 48IN

Model Number: 1862305

As a leading manufacturer in China, we offer EN 593 wafer-type butterfly valves designed to API 609 ...
Duplex Stainless Steel Butterfly Valve, A890 4A, CL300, 3 IN

Bosseal Valves (Suzhou) Co., Ltd.

Duplex Stainless Steel Butterfly Valve, A890 4A, CL300, 3 IN

Model Number: 1862308

As a trusted fabricator of butterfly valves, we offer double offset designs built to EN 593 and API ...
DSS Butterfly Valve, ASTM A890 4A, CL 300, 16 IN, API 609

Bosseal Valves (Suzhou) Co., Ltd.

DSS Butterfly Valve, ASTM A890 4A, CL 300, 16 IN, API 609

Model Number: 1862315

We produce ASTM A890 4A wafer butterfly valves designed for high performance. These double-offset va...
ASTM A890 4A Wafer Butterfly Valve, 32IN, CL300, API 609

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Wafer Butterfly Valve, 32IN, CL300, API 609

Model Number: 1862322

As a prominent API 609 Category B butterfly valve provider in China, we offer high-quality solutions...
Duplex Stainless Steel Butterfly Valve, 4A, CL150, 2-1/2 IN

Bosseal Valves (Suzhou) Co., Ltd.

Duplex Stainless Steel Butterfly Valve, 4A, CL150, 2-1/2 IN

Model Number: 1862328

As a fabricator of Monel K500 stem butterfly valves, we offer a double offset design conforming to E...
ASTM A890 4A Butterfly Valve, CL150, 14 IN, API 609, EN 593

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Butterfly Valve, CL150, 14 IN, API 609, EN 593

Model Number: 1862335

We manufacture ASTM A890 4A lug butterfly valves featuring a double offset design for superior perfo...
ASTM A890 4A Lug Butterfly Valve, 30IN, CL150, API 609

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Lug Butterfly Valve, 30IN, CL150, API 609

Model Number: 1862342

We provide API 609 Category B butterfly valves that meet EN 593 standards. Our 30-inch, 150-lb valve...
EN 593 ASTM A890 4A Lugged Butterfly Valves, CL 300, 8 IN

Bosseal Valves (Suzhou) Co., Ltd.

EN 593 ASTM A890 4A Lugged Butterfly Valves, CL 300, 8 IN

Model Number: 1862353

As a leading 8-inch butterfly valve manufacturer in China, we produce high-quality valves built to A...
DSS Lug Butterfly Valve, CL 300, 24 IN, ASTM A890 4A, EN 593

Bosseal Valves (Suzhou) Co., Ltd.

DSS Lug Butterfly Valve, CL 300, 24 IN, ASTM A890 4A, EN 593

Model Number: 1862360

We offer double offset lug butterfly valves built to API 609 Category B and EN 593 standards. Our 24...
API 609 Lug Butterfly Valve, ASTM A890 4A, 300 LB, 42 IN

Bosseal Valves (Suzhou) Co., Ltd.

API 609 Lug Butterfly Valve, ASTM A890 4A, 300 LB, 42 IN

Model Number: 1862367

We manufacture high-performance double eccentric butterfly valves with a double offset design, craft...
Monel K500 Stem Butterfly Valve, 2 IN, 150 LB, ASTM A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

Monel K500 Stem Butterfly Valve, 2 IN, 150 LB, ASTM A890 4A

Model Number: 1862369

As a leading manufacturer of RPTFE seated butterfly valves, we offer high-quality, soft-seated desig...
API 609 Category B Butterfly Valve, A890 4A, CL150, 12 IN

Bosseal Valves (Suzhou) Co., Ltd.

API 609 Category B Butterfly Valve, A890 4A, CL150, 12 IN

Model Number: 1862376

As a trusted supplier of ASTM A890 4A butterfly valves, we offer high-performance solutions built to...
Monel K500 Stem Butterfly Valve, CL 150, 28 Inch, A890 4A

Bosseal Valves (Suzhou) Co., Ltd.

Monel K500 Stem Butterfly Valve, CL 150, 28 Inch, A890 4A

Model Number: 1862383

As a premier manufacturer of EN 593 flanged butterfly valves, we provide 28-inch valves designed to ...
ASTM A890 4A Double Offset Butterfly Valve, CL 300, 6 IN

Bosseal Valves (Suzhou) Co., Ltd.

ASTM A890 4A Double Offset Butterfly Valve, CL 300, 6 IN

Model Number: 1862394

We manufacture high-performance 6-inch butterfly valves with flanged ends, designed with a double of...
API 609 Cat B ASTM A890 4A Butterfly Valves, 300 LB, 20 IN

Bosseal Valves (Suzhou) Co., Ltd.

API 609 Cat B ASTM A890 4A Butterfly Valves, 300 LB, 20 IN

Model Number: 1862401

We specialize in producing high-performance double-offset butterfly valves designed to meet API 609 ...
Total 52 record(s), 24 record(s) per page