Hattersley Fig 669 PN32 Gate Valve

Product Specification

Sizes: Available in 1/4", 3/8", and 1/2" options.

Connections: Compatible with Tri-Clamp (ASME BPE or DIN 32676), Male Union (DIN 11851 / 11864-1), Varivent flange (DIN 11864-2), Flanged PN16 or ANSI 150 R/F, and Screwed to ISO 228.

Materials: Constructed from high-quality Stainless Steel 316L or 304.

Disk Options: Available in EPDM, PTFE (FDA compliant), AF100, or Viton.

Joints & Seals: Diaphragm options include EPDM, PTFE (FDA compliant), AF100, or Viton.

Medium Compatibility: Suitable for steam, gases, and liquids.

Set Pressure Range: From 0.35 to 62 Barg.

Valve Flow Coefficient (Cv) Range: [Include specific Cv range details here].

Temperature Range: [Include specific temperature range details here].

Approvals: [List any relevant certifications or approvals here].

Additional Notes: [Include any extra information or instructions here].

This comprehensive specification ensures that our products meet the highest standards of quality and performance for various applications. For optimal results, ensure compatibility with your specific system requirements.

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 Specification **Sizes Available:** 3/8", 1/2", 3/4", 1", 1.1/4" **Connections:** Screwed BSPP or NPT **Materials:** S.G. Iron (18.1) or Stainless Steel (18.2 & 18.7) **Disk Options:** Metal, Viton, Nylon, or PEEK (dependent on pressure requirements) **Joints & Seals:** NBR, FPM, EPDM (varies by model) **Compatible Media:** Steam, Gases, and Liquids **Set Pressure Range:** 0.05 to 200 Barg (dependent on size) **Temperature Range:** - **(18.1)** -10 to 280°C - **(18.2)** -60 to 280°C - **(18.7)** -200 to 280°C **Design Notes:** The specified temperature range applies to valves featuring a Metal disk. This comprehensive specification ensures you select the correct valve for your application needs, optimising performance across a wide range of environments. Ideal for industrial and commercial use, our product guarantees reliability and efficiency. For further inquiries or bespoke requirements, please contact us today.