High-Pressure Ball Valve Seat, Graphite/Inconel, 369*357 mm

Product Name: High-Pressure Hard-Seal Ball Valve Seat, Graphite Seat
Model: MAX900S
Specification: 369 mm * 357 mm
Material Properties:
Graphite Purity: ≥99%
Metal Wire Content: 20% (Inconel 600)
Sulfur Content: ≤50 PPM
Chlorine Content: ≤20 PPM

Technical Requirements

Degreasing & Oil Removal: Yes
Testing Medium: Nitrogen
Test Pressure: 4 MPa
Sealing Performance: Zero leakage under nitrogen pressure test

Key Advantages

Zero Gas Leakage: Meets stringent nitrogen sealing requirements.
Durability: Prevents expansion-induced cracking common in traditional designs.
Custom Solutions: Available for high-pressure gas sealing challenges.

Challenges & Solutions

High-Difficulty Sealing: Achieving gas-tight sealing without prior hydrostatic testing is extremely challenging for hard-seal ball valves. Traditional graphite rings often expand after water testing, leading to failure in subsequent gas tests.
Innovative Process: Our advanced manufacturing process ensures graphite rings pass nitrogen sealing tests directly after degreasing, without hydrostatic testing.
50 Units Delivered: All 50 high-pressure ball valves passed pressure testing on the first attempt.

Design Optimizations

Density & Weaving Analysis: Customized graphite density and tape weaving based on valve drawings to maximize radial expansion under compression.
Uniform Metal Wire Distribution: 20% Inconel 600 wire is evenly distributed to prevent localized high-density zones, ensuring consistent sealing performance.

Contact Us: If you face high-pressure gas sealing difficulties, our team can provide tailored solutions.