Self sealing gate valve

Key Specifications:

• Main specifications:
  • Size: 2 to 14-inch DN 50 to 350
  • Pressure: 150 to 600lbs
  • Design and manufacture: ANSI B16.34
  • Face to face: ANSI B16.10
  • Flanged ends: ANSI B16.5
  • BW ends: ANSI B16.25
  • Test and inspection: API 598, API 6D
• Main parts materials:
  • Body-bonnet: cast steel A216WCB, alloy steel A217 WC6, WC9, stainless steel
  • Sealing face: A182 F6, A182 F304, F316, monel
  • Stem: A182 F6, A182 F304, F316, monel
  • Full range of trim materials to match any services

Key Features:

1. Bellow Seal Design:

   • Metallic Bellows: A stainless steel or alloy bellows forms a hermetic seal around the valve stem, eliminating leakage paths and preventing fugitive emissions.

   • Double Sealing: Combines the primary seat seal with the bellows seal for redundant leak protection.

2. Material:

   • Body Material: Typically constructed from cast steel (WCB, WCC), stainless steel (CF8, CF8M), or exotic alloys for corrosion resistance.

   • Seat and Disc: Hardened stainless steel or surface-coated materials to ensure durability and tight sealing.

3. ANSI Compliance:

   • Designed and manufactured in accordance with ANSI standards, ensuring compatibility with ANSI-rated piping systems.

   • Compliant with ASME B16.34 for pressure-temperature ratings and API 602 for compact gate valves.

4. Operation:

   • Manual operation (handwheel or gear operator) or automated actuation (electric, pneumatic).

   • Smooth stem movement enabled by the bellows, reducing friction and wear.

5. Applications:

   • Ideal for handling hazardous chemicals, high-pressure steam, cryogenic fluids, and volatile hydrocarbons.