Tungsten Carbide Valve Trim Parts for Lurgi Gasifier & Coal Gasification Plants

Coal gasification plants operate under extremely harsh environments. Valves used in lock hopper systems, coal feeding units, and ash discharge systems face continuous abrasion, erosion, and impact wear.

Tungsten carbide (WC) is widely used in gasifier valve trim parts because it offers:

• Excellent wear resistance
• Outstanding erosion resistance against ash and coal slurry
• High compressive strength for high pressure sealing
• Long service life and reduced shutdown risk

Main Products We Supply for Lurgi Gasifier Valve Assemblies

TC Top Cone (Tungsten Carbide Top Cone)

A key wear-resistant cone component used in high-pressure valve trim systems. Designed to resist erosion and maintain sealing stability.

TC Bottom Cone (Tungsten Carbide Bottom Cone)

High toughness carbide cone part for valve trim assemblies, suitable for heavy impact and abrasive media.

Tungsten Carbide Top Seat Ring

A heavy-duty sealing seat ring for high pressure valves, providing excellent sealing performance and long lifetime.

TC Seat Ring / Sealing Ring

Carbide sealing ring used as a critical valve seat component, typically installed together with cone parts as a complete trim set.

Hot Selling Sizes (Stable Repeated Supply)

We regularly supply the following sizes for Lurgi gasifier valve systems:

• TC Top Cone Ø454.82×Ø390×18
• TC Bottom Cone Ø356×Ø306×20
• Top Seat Ø479.86×Ø426×37
• TC Seat Ring Ø386.05×Ø338×37

Other sizes and customized designs are available based on customer drawings.

Typical Applications in Coal Gasification Plants

Our carbide trim components are commonly used in:

• Lurgi gasifier lock hopper valves
• Coal feeding system valves
• Ash discharge valves
• High-pressure syngas pipeline valves
• Coal chemical plant flow control valves

These valves often operate under abrasive conditions where alloy steel components wear quickly.

Material Options (WC-Co / WC-Ni)

We provide different tungsten carbide grades based on working conditions:

WC-Co (Cobalt Binder Carbide)

• High hardness and wear resistance
• Widely used for erosion environments
• Cost-effective for general gasification applications

WC-Ni (Nickel Binder Carbide)

• Improved corrosion resistance
• Suitable for corrosive syngas medium and chemical environments
• Better performance in sour gas conditions

OEM Manufacturing Capability

We support full OEM production based on:

• 2D drawings (PDF/DWG)
• 3D files (STEP/IGES)
• Samples

Available processing:

• Precision grinding OD/ID
• Lapping for sealing face
• Chamfer and groove machining
• Tight tolerance control
• 100% inspection report (hardness, density, dimensions)

Quality Control & Inspection

Each batch is tested and inspected for:

• Hardness (HRA)
• Density
• Dimensional accuracy
• Surface defects
• Concentricity & flatness (for finished parts)

Inspection reports can be provided for each shipment.

Packaging & Export

• Anti-rust protection
• Foam + wooden case packing for large rings
• Safe export packing for sea and air shipment

We have experience exporting carbide valve parts worldwide.

Request Quotation

To get an accurate quotation, please provide:

• Drawing or detailed dimensions
• Quantity required
• Working pressure and medium
• Tolerance and surface finish requirement

📩 Email: info@maxcarbide.com
📱 WhatsApp: +86-18975328315
⏱ Response time: within 12–24 hours

FAQ 

Q1: What are tungsten carbide valve trim parts used for in a Lurgi gasifier?

They are used as wear-resistant sealing components in high-pressure valves, especially lock hopper valves, coal feed valves, and ash discharge valves.

Q2: Can you supply complete sets including cones and seat rings?

Yes, we can supply complete trim sets including top cone, bottom cone, top seat, and seat ring.

Q3: Do you provide finished machining and grinding?

Yes, we can provide rough blanks or fully finished precision ground parts.

Q4: Which carbide grade is recommended for coal gasification plants?

WC-Co grades are widely used for erosion wear. WC-Ni grades are recommended for corrosive syngas environments.