IFAN ASTM D2513 All Size Brass Gas Valve

Brass Gas Valve Technical Specifications & Operational Data

Product Definition

Brass gas valves are precision-engineered flow control devices specifically designed for fuel gas applications. These quarter-turn valves feature robust construction with safety-certified components for reliable operation in natural gas and LPG systems.

Material Composition

• Body/Bonnet: CW602N dezincification-resistant brass

• Ball/Stem: CW614N brass with chrome plating

• Seats: PTFE composite with fire-safe design

• Seals: HNBR or FKM elastomers

• Packing: Graphite-impregnated braid

Performance Specifications

Pressure Ratings

• Working pressure: 4 bar (standard)

• Maximum pressure: 10 bar

• Burst pressure: ≥25 bar

• Temperature range: -20°C to 60°C

Flow Characteristics

• Full port design (100% bore)

• Flow coefficient (Cv): 18 (DN25 size)

• Pressure drop: <0.2 bar @ rated flow

Safety Features

• Double O-ring stem seals

• Fire-safe construction (ISO 10497)

• Emergency shut-off capability

• Positive position indicator

Connection Variants

• Threaded:

  • BSPP (parallel)

  • BSPT (tapered)

  • NPT (American standard)

• Flanged:

  • EN 1092-1 PN16

  • ANSI Class 150

• Compression:

  • For soft copper tubing

  • Ferrule-type connection

Quality Standards

• Material Standards:

  • EN 12165 CW602N

  • ASTM B16/B124

• Performance Certifications:

  • DVGW (Germany)

  • AGA (USA)

  • ISO 23553-1

  • CE-PED

Operational Parameters

• Actuation torque: 8-15 Nm

• Cycle life: 20,000+ operations

• Leakage rate: <0.1 bubble/min (seat test)

• Emergency shut-off time: <1 second

Installation Requirements

• Pipe preparation standards

• Thread sealing methods

• Torque specifications:

  • DN15: 25 Nm

  • DN25: 35 Nm

  • DN50: 50 Nm

• Pressure testing protocol

Maintenance Protocol

• Annual operational checks

• 3-year comprehensive inspection

• Seal replacement intervals

• Lubrication requirements

Technical Compliance

• Gas type compatibility

• Installation orientation

• Venting requirements

• Support spacing

Failure Analysis

• Common failure modes

• Mean time between failures

• Wear patterns

• Material degradation

Conclusion

Brass gas valves provide secure, reliable flow control for fuel gas systems through their robust construction and safety-certified design. The dezincification-resistant brass body ensures long-term durability, while the precision-engineered internal components guarantee leak-proof operation. Proper installation following gas industry standards and adherence to maintenance schedules are essential for optimal performance and safety compliance throughout the valve’s service life.

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