| Size range | 4 2, 1/2" 36" |
|---|---|
| Pressure Rating | Ansi Class 150, 300, 600, 900, 1500, Pn 16, Pn 25, Pn 40, Pn 63, Pn 100 |
| Trim Material | Stainless Steel, Hastelloy, Inconel |
Alloy 20 Valves Manufacturer in India – ASTM B462 / UNS N08020, Offering Superior Acid Corrosion Resistance & High-Performance Reliability
Ridhiman Alloys is One of the primary Alloy 20 valves manufacturers, which offers flow control components engineered to extreme accuracy to be used in highly corrosive industrial applications, especially sulfuric acid and chloride-containing process media. The 20 Valves have the best resistance to pitting, crevice corrosion, and stress corrosion cracking, and they provide reliable sealing and flow control of their use in extreme temperature and stress pressure conditions.
Product Grade & Specification Table
| Material Grade | Standard (Common) | Temperature Range | Pressure Ratings | Valve Types | End Connections | Typical Applications |
|---|---|---|---|---|---|---|
| Alloy 20 (UNS N08020 / Carpenter® 20) | ASTM B366 / ASTM B462 / ASME SB462 | −20°C to +350°C | Class 150 – 1500 | Gate, Globe, Check, Ball, Plug | Flanged (RF / RTJ), Socket Weld, Butt Weld, Threaded (NPT) | Chemical, Petrochemical, Pharmaceuticals, Fertilizers, Acid Processing Units |
Key Features
Application Scope: The Alloy 20 Valves are popular in sulfuric acid, chemical plants, pharmaceutical manufacturing, sea water systems, pulp and paper mills, food processing lines and other corrosive industrial environments that need the service of durable valves.
- Mixed acid streams & sulfuric acid.
- Stress corrosion cracking caused by chloride.
- Crevice and pitting corrosion in seawater exposure.
- Handling of nitric and phosphoric acid.
- Oxidizing & reducing media
Depending on the service conditions in the engine, valves are designed and produced according to international standards in the industry including API, ASME, ANSI and DIN. They are applicable in isolation, back flow prevention, throttling and continuous flow regulation.
Technical Attributes
- Good acid and chloride corrosion resistance in acidic and chloride conditions.
- Good high temperature mechanical stability.
- Sealing with minimum operation torque Leak-tight.
- Manual, electric, and pneumatic actuated.
- Adherent to significant standards of ANSI / ASME / API.
- Capable of working under cyclic pressure and thermal variations.
Available End Configurations
- Flanged (RF / RTJ)
- Butt Weld (BW)
- Socket Weld (SW)
- Threaded (NPT)
Alloy 20 Valves – Clients & Project Supply
Alloy 20 Valve is used in industrial chemical and refining plants since they have been tested to perform well under corrosive and high-temperature service conditions. Engineers consider compatibility with process media, corrosion type, temperature, pressure group, and final connection type so that there is a maximum system dependability.
| Product Supplied | Quantity | Location |
|---|---|---|
| Alloy 20 Ball Valves Class 300 | 78 Units | Dahej |
| Alloy 20 Gate Valves Class 150 | 142 Units | Ankleshwar |
| Alloy 20 Check Valves Class 600 | 56 Units | Hyderabad |
| Alloy 20 Globe Valves Class 150 | 97 Units | Chennai |
These valves are used in industrial fields, e.g. chemical processing, petrochemical refineries, acid plant units, desalination plants, offshore fields, power generation system, and pulp and paper manufacturing plant. Alloy 20 valves are a best seller in the b2b marketplace especially when installing new equipment or when upgrading a plant. The Alloy 20 valves are often sourced by companies looking at the related corrosion-resistant types of valve materials like Alloy Valves and Valves to be used in similar operating environments.
Type of Sub-products

Alloy 20 Ball Valve Alloy 20 Ball Valve
Designed for quick shut off applications, these valves offer excellent corrosion resistance in chemical environments, especially against sulfuric acid.

Alloy 20 Gate Valve Alloy 20 Gate Valve
Alloy 20 Gate Valve Manufacturer in India
