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33Y43 - ESAB 33Y43 Regulator Valve Seat Assembly

Packaging: pack of 1
$389.19/EA $243.29/pack of 1 only $243.29/EASave 37%

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SKU: ESB33Y43 Category:

OVERVIEW

Genuine ESAB 33Y43 Valve Seat Assembly for Industrial Regulators

The ESAB 33Y43 Valve Seat is a critical replacement component designed for the maintenance and repair of high-performance oxy-fuel gas regulators. As a genuine OEM part, it ensures exact dimensional compatibility and material integrity required for safe gas control. This valve seat assembly is engineered to fit specific models within the ESAB, Purox, and Oxweld product lines, providing a reliable solution for equipment refurbishment.

In the context of gas regulation, the valve seat is the primary sealing interface that controls the flow of high-pressure gas from the cylinder into the low-pressure chamber. Over time, contaminants, wear, and high-velocity gas flow can degrade the seat surface, leading to performance issues. The 33Y43 is manufactured from durable materials capable of withstanding the mechanical stresses and chemical properties of industrial gases, ensuring a tight seal and precise pressure modulation.

Industrial MRO professionals rely on genuine ESAB parts to maintain compliance with safety standards and equipment specifications. Using non-OEM substitutes in gas regulation equipment can compromise safety and void warranties. This seat assembly is supplied as a single unit, ready for installation during standard regulator overhaul procedures. It is an essential stock item for repair shops and facilities performing in-house maintenance on welding and cutting gas apparatus.

Key Technical Specifications:

  • Manufacturer: ESAB
  • Part Number: 33Y43
  • Component Type: Valve Seat Assembly
  • Compatibility: Select Purox / Oxweld Regulators
Additional Information
Brand:ESAB
Packaging Description:1 Per Ea
Product Type:Valve Seat
Compatible Brand/Model:ESAB, Purox, Oxweld
Application:Regulator Repair

INCLUDED

  • 1 x Valve Seat Assembly (33Y43)

APPLICATIONS

  • Repair of creeping gas regulators
  • Routine maintenance of oxy-fuel equipment
  • Overhaul of Purox and Oxweld regulators
  • Gas distribution system service

FAQ

The valve seat provides the sealing surface against which the regulator stem closes. It controls the flow of gas and prevents pressure from rising when gas is not being used (static condition).

The most common sign is 'creep,' where the delivery pressure gauge needle slowly rises after you close the torch valve. This indicates the seat is not sealing 100%.

Yes, the 33Y43 is a genuine ESAB OEM replacement part, ensuring compatibility and safety for your equipment.

No, valve seats are highly specific. This part is designed for specific ESAB, Purox, and Oxweld models. Always check your equipment's parts diagram.

Wear and tear over time, debris entering the regulator from a dirty cylinder, or excessive force on the adjusting screw can damage the seat surface.

Typically, repair parts like this do not come with instructions. Installation should be performed by a qualified technician familiar with gas apparatus repair.

Regulator repair requires specific knowledge and tools. Improper assembly can lead to dangerous leaks or failure. We recommend having repairs done by a certified facility.

The seat assembly typically consists of a brass body with a specialized polymer or elastomer insert designed to withstand high gas pressures and resist chemical degradation.