ANSI Stainless Steel Integrated Ball Valves

ANSI Stainless Steel Integrated Ball Valves is designed and manufactured in strict accordance with ANSI B16.34. It features an integrally cast structure of ball and stem, eliminating traditional split connecting parts for a more compact design, higher strength and more reliable sealing.

With a straight-through flow passage, the valve has low flow resistance and fast operation, enabling quick full-open and full-close control of pipeline media.Equipped with various stainless steel materials and sealing structures, the valve delivers stable performance under corrosive, high-temperature and high-pressure conditions, making it a key control valve for petroleum, chemical, natural gas, water treatment, food, pharmaceutical and other industries.

Core Structure & Features

Integral Cast Structure

● Ball and stem are integrally cast from stainless steel, with no extra welding or threaded connections.

● High structural rigidity and concentricity, effectively reducing the risk of seizure and leakage.

● Compact size, ideal for space-limited piping layouts.

Excellent Flow Performance

● Straight S-type flow passage with low pressure loss and large flow capacity.

● High flow coefficient Cv, superior to conventional globe valves and gate valves at the same size.

Strong Corrosion Resistance & Long Service Life

● Body, ball, stem and fasteners are all available in stainless steel.

● Suitable for corrosive media including acids, alkalis, salts, oil, gas and steam.

● Duplex stainless steel, Hastelloy and other alloys available for high-temperature, high-pressure, highly corrosive conditions.

Reliable Sealing & Wide Application

● Floating ball / fixed ball structures available.

● Soft seal (PTFE/RPTFE) and metal hard seal (Stellite alloy) for different temperature requirements.

● Leakage rate meets API 6D Class Ⅵ.

Multi-Standard, Multi-Actuation, Multi-Connection

● Complies with international standards including API 6D, ANSI B16.34, ANSI B16.5.

● Full range of actuation: manual, worm gear, pneumatic, electric.

● Multiple connections: flanged, threaded, butt-weld for easy on-site installation.

Main Technical Parameters

Main Material Configuration

Typical Applications

With integral structure, all-stainless-steel construction and high-standard design, ANSI Stainless Steel Integrated Ball Valves is widely used in industrial systems requiring strict sealing, reliability and corrosion resistance:

● Oil & Gas: Gathering pipelines, wellhead assemblies, oil & gas processing stations (fire-safe, anti-sulfur, API 6D certified)

● Chemical Industry: Transportation of acids, alkalis, salts, solvents and corrosive chemicals

● Water Treatment & Environmental Protection: Raw water, wastewater, pure water, desalination systems

● Power Engineering: Boiler feed water, circulating water, chemical water treatment systems

● Food & Pharmaceutical: Hygienic media, steam, cleaning pipelines (no dead space, easy to clean)

● Papermaking, Printing & Dyeing, Metallurgy: High-temperature, particle-containing, corrosive slurries and fluids

Selection Recommendations

Medium & Material Matching

● General corrosion: 304 / CF8 series

● Medium to high corrosion: 316L / CF3M series

● High pressure & severe corrosion: 2205 duplex stainless steel

● Particle-containing media: metal hard seal preferred

Temperature & Seal Selection

● ≤ 232℃: PTFE / RPTFE soft seal (cost-effective)

● ＞ 232℃: metal hard seal (Stellite alloy)

Pressure & System Safety

● Select corresponding Class according to design pressure; 10%~20% pressure margin recommended.

● For oil, gas and hazardous services: API 6D, API 6FA (fire-safe, anti-sulfur) certified products preferred.

Actuation & Installation

● Small bore, manual operation: direct handwheel

● Large bore, high torque: worm gear operation

● Remote / automatic control: pneumatic or electric actuator

Installation, Operation & Maintenance

Installation & Operation

● Before installation, verify model, pressure, size and service conditions; ensure stainless steel body is undamaged.

● Open/close slowly to avoid water hammer.

● For pneumatic/electric valves, confirm air supply, power supply and control signals are normal before operation.

● Strictly prohibit over-pressure, over-temperature and over-load service.

Routine Maintenance

● Regularly check for leakage at sealing surfaces, packing gland and flanged joints.

● Inspect actuators periodically to ensure no seizure, air leakage or electric leakage.

● Lubricate stem and worm gear regularly to maintain smooth operation.

● For long-idle valves, drain media, protect against moisture and dust, and prevent corrosion of stainless steel parts.