Flanged Industrial Safety Valve Le-ser Type 431 433 Standard Medium Flow Liquid Pressure Safety Relief Valves with Rolled-in Seat

The LESER Type 431/433 Modulate Action Safety Relief Valves are engineered for reliable pressure protection across a wide range of industrial applications. Designed to handle steam, gases, and liquids, these valves feature a proportional opening characteristic, minimizing medium loss and ensuring stable operation, particularly for medium mass flows.

• Proportional Opening: Large proportional range ensures stable operation and minimal medium loss.
• Versatile Material Options: Available in gray cast iron, nodular cast iron, carbon steel, and stainless steel.
• Wide Pressure Range: Handles pressures from 0.2 to 40 bar (2.9 to 580 psig), with PN 160 options up to 160 bar.
• Robust Certifications: PED, AD 2000-Merkblatt A2, AQSIQ, EAC, and classification societies (LR, RINA, DNV GL, BV, ABS).
• Flexible Connections: DIN EN 1092 (DN 15–150) and ASME B16.5 (NPS 1/2–6) flange options.
• Low Maintenance: Self-draining angle-type body and single-part spindle reduce residue and corrosion.
• Optional Accessories: O-ring soft seal, bellows, and metallic sealing plates for customized applications.
• Fast Delivery: Standard configurations available in 2 weeks.

The LESER Type 431/433 valves are designed for reliable pressure relief in various industries:

• Chemical Industry: Protects recycling facilities and waste gas purification systems.
• Oil and Gas: Ensures safety in upstream and downstream processes with thermal expansion protection.
• Power Generation: Manages pressure in heat-transfer oil systems and steam applications.
• Water Treatment: Safeguards pipeline segments and sealed storage tanks.
• Machine Building: Supports piston compressors and hydraulic systems with pulsating pressures.

For more information about the LESER Type 431/433 Safety Relief Valves, pricing, or to request a demo, contact our team:

• Email: edward.zhao@gongboshi.com
• Phone: +8615000725058
• Website: https://www.shgongboshi.com/

• LESER High Performance Valves: For high-pressure and high-flow applications.
• LESER Compact Performance Valves: For smaller systems with tight shutoff.
• LESER API Series: API-compliant valves for oil and gas applications.
• LESER Clean Service Valves: For hygienic applications in pharmaceuticals and food industries.