Skip to Main Content
Canadian
Canadian owned and operated

33Y43 - ESAB 33Y43 Regulator Valve Seat Assembly

Packaging: pack of 1
$389.19/EA $241.55/pack of 1 only $241.55/EASave 38%

Usually ships within 3-5 business days

OVERVIEW

Restore Your Regulator's Performance with the ESAB 33Y43 Seat

Is your oxygen or acetylene regulator "creeping"? If you notice the delivery pressure gauge rising slowly when your torch is off, it’s a sign that your valve seat is worn or damaged. The ESAB 33Y43 Valve Seat is the genuine replacement part you need to fix this dangerous condition and get your equipment back to safe working order. Designed for Purox and Oxweld style regulators, this seat assembly restores the tight seal needed to hold pressure steady.

Regulator maintenance is a vital part of shop safety. A leaking valve seat allows high-pressure gas to sneak past the internal valve, potentially damaging the diaphragm or causing the safety relief valve to pop. By replacing the old seat with a fresh 33Y43 assembly, you ensure that your regulator shuts off completely when demand stops. This not only protects your equipment but also ensures consistent flame characteristics during cutting and welding operations.

Don't risk your safety with generic parts that might not fit perfectly. This ESAB OEM part is built to the exact factory specifications of your original equipment. Whether you are rebuilding an old reliable regulator or performing a scheduled tune-up, this valve seat is the heart of the repair. It installs directly into the high-pressure inlet assembly, providing a fresh surface for the stem to seal against.

Why Choose Genuine ESAB Parts?

  • Safety First: Prevents dangerous pressure creep.
  • Perfect Fit: No guessing if it will seal correctly.
  • Durability: Made to handle high-pressure gas service.
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.