A41 Series Spring-Loaded Micro-Opening Safety Valve with H8 Bore Precision, Ra<0.4μm Surface Roughness, and 21 Bar Max Pressure

The A41 Series (A41H, A41F, A41Y) is a professional-grade Spring-Loaded Micro-Opening Safety Valve designed for superior overpressure protection. Engineered for reliability in piping systems and pressure vessels, these valves automatically release excess pressure to ensure the safety of your equipment and personnel.

Widely used across industries including power generation, chemical processing, oil & gas, and HVAC, the A41 series is the trusted choice for air, water, steam, and corrosive media.

• Automatic Overpressure Protection: High-precision spring mechanism ensures immediate opening at set pressure and tight sealing once safety levels are restored.
• Micro-Opening Design: Provides stable and controlled pressure relief, preventing sudden system shocks.
• Enclosed Bonnet: Prevents leakage of the medium into the atmosphere, ensuring a clean and safe working environment.
• Durable Construction: Available in Carbon Steel (WCB) and Stainless Steel (CF8/CF8M) for maximum longevity in harsh environments.
• Corrosion Resistant: Special PTFE sealing and stainless steel internals are available for handling aggressive chemicals.
• ISO/CE Certified Quality: Manufactured under strict quality control standards to meet international safety requirements.

• Nominal Pressure (PN): 1.6 MPa, 4.0 MPa, 6.4 MPa (PN16, PN40, PN64)
• Set Pressure Range: 0.1 MPa to 6.4 MPa (Adjustable via spring)
• Discharge Coefficient: Optimized for micro-opening performance
• Reseating Pressure: ≥ 85% of Set Pressure
• Sealing Pressure: 90% of Set Pressure

Standard connection: Flanged (ANSI, DIN, or JIS available upon request)

Sizes range from DN25 to DN200

Reference dimensions available upon request