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Aperçu /Produits/Soupapes de sûreté/Flanged Industrial Safety Valve Le-ser Type 431 433 Standard Medium Flow Liquid Pressure Safety Relief Valves with Rolled-in Seat

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

1
MOQ
US $800.00 - 1500.00/ Unit
Prix
Flanged Industrial Safety Valve Le-ser Type 431 433 Standard Medium Flow Liquid Pressure Safety Relief Valves with Rolled-in Seat
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Caractéristiques
Température: -270 à 450 ° C | -454 à 842 ° F
Matériau du corps: Carbone
Diamètre du flux le plus étroit: 12 - 92 mm | 0,47 - 3,62 en
Matériau de soufflet (facultatif): Acier inoxydable et élastomère
Pression réglée: 0,2-40 Bar | 2,9-580 psig
Mettre en évidence:

flanged industrial safety valve

,

medium flow safety relief valve

,

rolled-in seat safety valve
Informations de base
Nom de marque: Leser
Numéro de modèle: 431/433
Conditions de paiement et expédition
Détails d'emballage: Boîte en bois + protection
Délai de livraison: 60-90 jours de travail
Conditions de paiement: T / t
Capacité d'approvisionnement: 1000 unités par an
Description de produit
LESER Type 431/433 Safety Relief Valve
Product Overview

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.

Key Features
  • 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.
Technical Specifications
Parameter Type 431/433 Type 431/433 PN 160
Set Pressure 0.2–40 bar (2.9–580 psig) 0.3–160 bar (4.35–2321 psig)
Temperature Range -270°C to 450°C (-454°F to 842°F) -270°C to 450°C (-454°F to 842°F)
Nominal Diameter at Inlet DN 15–DN 150 (NPS 1/2–NPS 6) DN 15 (NPS 1/2)
Actual Orifice Diameter (d₀) 12–92 mm (0.47–3.62 in) 12 mm (0.47 in)
Actual Orifice Area (A₀) 113–6648 mm² (0.175–10.3 in²) 113 mm² (0.175 in²)
Flange Rating Inlet PN 16–PN 40, ASME Class 150–300 PN 63–PN 160, ASME Class 300–600
Body Material 0.6025, 0.7043, 1.0619, 1.4408 (Gr. 60-40-18, SA 216 WCB, SA 351 CF8M) 1.0619, 1.4408 (SA 216 WCB, SA 351 CF8M)
Bellows Material (Optional) Stainless steel, elastomer Stainless steel
Seat Gasket Metallic, sealing plate, O-ring Metallic, sealing plate, O-ring
Load Type Spring-loaded Spring-loaded
Applications

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.
Frequently Asked Questions
What fluids can the Type 431/433 handle?

These valves are suitable for steam, gases, and liquids, per AD 2000-Merkblatt A2 standards.

Are the Type 431/433 valves suitable for high-pressure applications?

Yes, the PN 160 variant supports pressures up to 160 bar (2321 psig).

What certifications do these valves have?

They are certified to PED, AD 2000-Merkblatt A2, AQSIQ, EAC, and classification societies like LR, RINA, and DNV GL.

Can the valves be customized?

Yes, options include O-ring soft seals, bellows, and metallic sealing plates for specific applications.

How do the valves ensure low maintenance?

The self-draining angle-type body and single-part spindle design reduce residue and corrosion.

Contact Us

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

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+8615000725058
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