Hard Backing LT-Type Lug Butterfly Valve

Hard Backing LT-Type Lug Butterfly Valve – Overview

The hard backing LT-type lug butterfly valve is a heavy-duty quarter-turn valve designed for reliable shut-off and flow regulation in industrial pipelines. Featuring a lug-style body with threaded inserts and a hard seat lining, it offers enhanced mechanical strength, easy pipeline isolation, and superior wear resistance—ideal for high-cycle and abrasive service conditions.

Key Design Features

• Lug-Type Body (LT Design)
  Equipped with threaded lugs for secure bolt-up between flanges, allowing end-of-line service without downstream piping removal.

• Hard Backing Seat
  Metal or hard polymer-backed seat (such as stainless steel, bronze, or reinforced PTFE) provides durability against abrasive or high-temperature media.

• Robust Disc Options
  High-strength stainless steel, ductile iron, or coated alloy discs ensure long service life with minimal torque loss.

• Quarter-Turn Operation
  Simple 0°–90° rotation for quick opening, closing, and throttling applications.

• Actuation Flexibility

  • Manual gear operator

  • Pneumatic or electric actuator options for automation

  • Locking devices available for safety compliance

• Surface Protection
  Heavy-duty epoxy or fusion-bonded coating for corrosion resistance in demanding environments.

Applications

• Oil & Gas Pipelines – Suitable for isolation and bypass lines.

• Chemical Processing – Handles abrasive and high-temperature fluids.

• Power Generation – Steam, cooling water, and ash slurry lines.

• Marine & Offshore – Corrosion-resistant designs for seawater service.

• Mining & Slurry Transport – Resists wear from solid-laden fluids.

Advantages

• End-of-Line Capability – Lug design supports downstream pipeline removal.

• High Durability – Hard-backed seat extends lifespan under harsh service.

• Versatile Connection – Matches multiple flange standards (ASME, DIN, JIS).

• Secure Isolation – Threaded lugs provide strong mechanical hold.