Valfonta Model 253 Steam Reheater Injector

Product Specifications

Sizes Available: ½", ¾", 1", 1¼", 1½", 2", 2½", 3", 4", 5", 6"

Connection Types: Flanged DIN or ANSI

Materials: SG Iron / Carbon Steel (13.1) and Stainless Steel (13.2)

Disk Options: Metal, Viton, or Nylon (dependent on pressure requirements)

Joints & Seals: NBR, FPM (varies by model)

Suitable Media: Steam, Gases, and Liquids

Set Pressure Range: 0.5 to 30 Barg (size dependent)

Temperature Range: -10 to +280°C

Design Information: For detailed specifications and product notes, please refer to the accompanying product documentation.

This revised description is designed to enhance search engine optimisation while providing clear and concise technical information.

The FSSCDF Forward Acting Rupture Discs feature precision micro-scored sections that open in controlled petals, using four, six, or more radial score lines to ensure a clean, reliable opening while minimising the risk of petal separation. This design makes them particularly well suited for high burst pressure applications and for systems operating under cycling or pulsating conditions with gases or liquids, without compromising safety margins.

These discs respond to overpressure within milliseconds, opening fully without fragmentation, and are ideal for protecting safety relief valves. They support an operating-to-burst pressure ratio of up to 85%, offer excellent corrosion resistance, and can be further enhanced with an optional PTFE lining. In many applications, the discs can also withstand full vacuum conditions without additional supports, providing flexible installation options.

Key Specifications:

• Sizes: 1" (DN25) to 36" (DN900)

• Materials: Stainless steel, Alloy 201, 400, 600, 625, C276, Titanium

• Burst Pressure Range: 2–413 bar g (30–6000 psi g), depending on size and material

• Krl: 1.33

• Tolerance: ±5% to ±20%

• Operating Margin: Up to 85%

• Temperature Range: –196°C to 600°C

• Fragmentation: None – clean, petal opening

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional

• Holders: FSHI/A, FSHI/P, FSHI/F, FSHTC

• Rupture Detection: Electrical, Magnetic, Inductive, Optical

• Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD

**Product Features and Benefits** - **Horizontal Swing Pattern**: Designed for efficient operation in various applications. - **High-Quality Bronze Construction**: Crafted from robust bronze for durability and longevity. - **Standard Nitrile Disc with Material Alternatives**: Comes with a nitrile disc as standard, with options for alternative materials available to meet specific needs. - **Taper Threaded to BS EN 10226 ISO 7-1 (BS 21)**: Ensures compatibility and compliance with industry standards. **Product Specifications** - **Swing Pattern**: Features a reliable horizontal swing pattern for optimal functionality. - **Threaded Cover**: Includes a securely threaded cover for ease of maintenance. - **Nitrile Disc Included**: Standard nitrile disc, with options for alternative materials available. - **Internal Threading**: Ends are threaded internally to BS EN 10266 (ISO 7) specifications, ensuring compatibility with standard fittings. - **Versatile Mounting Options**: Suitable for installation in both horizontal and vertical pipe configurations (with vertical flow directed upwards). - **Medium Compatibility**: Adapts to Group 1 and Group 2 liquids. **Pressure and Temperature Ratings** - **Standards Compliance**: Meets BS 5154:1991 PN25 specifications. - **Pressure and Temperature Range**: Operates effectively at 25 Barg from -10°C to a restricted maximum of 100°C. This detailed description is optimised for search engines, making it easy for potential customers to find the reliable and versatile valve they need.