ANSI Flanged Ball Valve

Manufactured in strict accordance with ASME and API American standards, this ANSI Flanged Ball Valve adopts flange connection and realizes fast opening and closing via 90° ball rotation. With low flow resistance and stable sealing, it features high compatibility with standard American pipeline systems for industrial fluid control.

The ANSI Flanged Ball Valve nominal diameter ranges from 1/2″ to 24″ (DN15～DN600) with full bore and reduced bore options, suitable for water, oil, gas and granular medium pipelines. Standard pressure classes include Class150LB, Class300LB and Class600LB, covering low to ultra-high pressure working conditions. It supports a wide temperature range: PTFE soft seal applies to -40℃～150℃ with zero leakage for clean media, while metal hard seal adapts to -196℃～425℃, featuring temperature resistance and erosion resistance for extreme conditions.

Product Dimension

Production standard

Design and manufacture as BS5351, ANSI B16.34

Fane to face dimensions as ANSI B16.10

End flange dimension as ANSIB16.5

Pressure-temperature rating as ANSI B16.34

Pressure test as API598

Core Advantages

Quick 90° on-off operation, low flow resistance and energy loss

Dependable sealing, available in soft/metal seats for various harsh media

ANSI standard flanged design, good interchangeability & anti-static safe structure

Multiple drive options (manual, pneumatic, electric), easy installation & maintenance

Suitable for oil, gas, chemical and general industrial pipeline systems

Every heavy-duty ANSI flanged ball valve supplied by Xiangzheng undergoes 100% rigorous pressure boundary testing prior to global dispatch. Our laboratory evaluates each material lot under double-medium validation protocols—hydrostatic fluid and pneumatic air tracking—in strict accordance with American Petroleum Institute API 598 and ANSI B16.34 parameters, ensuring zero operational seepage inside your pipeline networks.

● Shell Hydrostatic Matrix: To eliminate subsurface casting anomalies, the structural shell is flooded with water and pressurized to extensive engineering thresholds: 3.1 MPa for Class 150LB (450 lbf/in²), 7.8 MPa for Class 300LB (1125 lbf/in²), 10.3 MPa for Class 400LB (1500 lbf/in²), and up to 15.3 MPa (2225 lbf/in²) for heavy-duty Class 600LB configurations.

● Seat Hydrostatic Isolation: To validate floating sphere isolation under heavy backpressure, water tests are executed at 2.2 MPa (Class 150LB), 5.6 MPa (Class 300LB), 7.6 MPa (Class 400LB), and 11.2 MPa (Class 600LB / 1630 lbf/in²), proving the absolute sealing capability of both our reinforced PTFE and metal-to-metal seating.

● Low-Pressure Seat Air Sealing: Recognizing that micro-molecular gases escape easier than water, every ANSI valve lot must pass a dedicated air seal check sustained at 0.5 to 0.7 MPa (60 to 100 lbf/in²). This guarantees absolute bubble-tight performance when isolating volatile gas, steam, and clean medium pipelines.

Test Pressure

Seaworthy Packaging & Logistics Protocol

Industrial carbon steel and oversized ANSI flanged components are highly vulnerable to atmospheric humidity, ocean salt-spray, and severe mechanical impacts during multi-border shipping loops. To guarantee your order arrives at your project terminal or distributor warehouse in pristine factory condition, Xiangzheng Valve enforces a rigid, cross-border seaworthy packaging framework:

● Multi-Barrier Rust Interception: After validating the pressure rating, every valve body undergoes rigorous thermal drying. Internal flow paths are misted with specialized industrial anti-rust oils, and the entire assembly is vacuum-sealed within a thick, moisture-barrier VCI (Vapor Corrosion Inhibitor) plastic enclosure that actively neutralizes salty sea air.

● Flange Face & Internal Bore Protection: The precision-machined Raised Face (RF) flanges and internal floating spheres are protected from mechanical scratching and job-site debris by bolting heavy-duty plastic or composite blind protectors over the valve ends.

● Rigid Steel-Skid & Fumigation-Free Crating: For standard arrays up to 10" and oversized 12” to 24” infrastructures, individual valves are anchored to heavy-duty carbon steel skid bases to prevent rolling. The lots are then enclosed within extra-thick, ISPM-15 compliant fumigation-free plywood crates, internally padded with high-density shock-absorbing expanded foam, and secured with external high-tensile steel straps to ensure safe forklift and crane crane handling at global ports.

Faq

Q1: Why is the low-pressure air seat test (0.5~0.7 MPa) necessary if the valve already passes the high-pressure hydrostatic test?

● A: High-pressure water testing (such as 11.2 MPa for Class 600LB) validates the structural integrity and heavy-load sealing limit of the WCB housing. However, micro-molecular media like gas and superheated steam can weep through micro-gaps that water molecules cannot penetrate. Our API 598 compliant air seal test ensures the floating ball and PTFE/metal seat maintain absolute gas-tight compliance under low pressure, preventing volatile fugitive emissions.

Q2: What heat treatment protocol do your ANSI ball valves undergo to achieve a cryogenic threshold of -196℃?

● A: Standard carbon cast steels experience severe cold embrittlement at sub-zero ranges, which risks catastrophic fracturing. For extreme cryogenic utilities down to -196℃, Xiangzheng utilizes certified austenitic stainless steel metallurgy (such as CF8/CF8M) combined with a specialized liquid nitrogen deep-cryogenic stabilization process. This structural treatment ensures that internal components maintain high impact toughness, uniform material contraction, and stable bidirectional shut-off without cracking.

Q3: How does Xiangzheng manage safe port crane lifting and discrete for massive 12" to 24" (DN300-DN600) ANSI valve lots?

● A: Oversized Class 300LB or Class 600LB valves exceed several hundred kilograms and cannot be handled like standard cargo. To prevent stem distortion, our factory integrates heavy-duty lifting lugs directly into the casting geometry or heavy flange perimeter. Each shipment is systematically blocked inside customized crates with engineered gravity centers, ensuring that global maritime freight forwarders can safely lift and crane the lots without displacing internal alignment or compromising seat boundaries.

Q4: What is the exact engineering interpretation of the "lbf/in²" parameters stated on your test pressure sheets?

● A: The "lbf/in²" unit represents Pounds per Square Inch (commonly abbreviated as PSI), which is the standard engineering pressure metric utilized across American pipeline layouts and international EPC tenders. Xiangzheng dual-engraves our data plates with both metric Megapascals (MPa) and imperial PSI ratings (such as 2225 PSI shell thresholds for Class 600LB) to provide field engineers with immediate localized cross-verification.

Q5: What is the factory production lead time for bulk Class 600LB projects, and do you support custom actuator integration?

● A: Supported by our weekly manufacturing capacity of 1500 PCS and a dedicated fleet of 44 CNC lathes, standard stock ANSI configurations are quality-tested and processed for shipping within 7 days. For custom high-pressure Class 600LB projects requiring automated pneumatic double-acting pistons or intelligent electric actuators, our optimized factory workflow guarantees complete assembly and seaworthy terminal delivery within 30 days.

Q6: How does your EN 10204 3.1 certification infrastructure simplify international maritime custom clearance?

● A: Global public infrastructure bidding demands absolute metallurgical proof to prevent counterfeit material entry. Xiangzheng accompanies every shipment with a certified EN 10204 3.1 Mill Test Report (MTR), detailing exact ladle heat chemistry, yield strengths, elongation coefficients, and API 598 test numbers. This verifiable documentation framework ensures zero regulatory delays and immediate compliance clearance at European, Middle Eastern, and South American entry ports.