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Leyon Piping System

Contact Number

+86 13901803146

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Leyon FM UL STANDARD AND QUICK RESPONSE CONCEALED PENDENT SPRINKLER VK4621 K5.6

Standard and Quick Response Concealed Pendent Sprinklers The VK4621 is a small thermal glass bulb sprinkler designed for installation in concealed ductwork where a smooth ceiling appearance is desired. Low profile cover plate assembly provides up to ½ inch (13 mm) of vertical adjustment range.
Features:
• K5.6 (80.6 Metric).
• Quick response glass bulb operator.
• Integral threaded adapter cup allows for installation of push-on or threaded cover plates.
• Low profile, small diameter, removable cover plate provides a nearly flush appearance when installed for easy maintenance.

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Category：

Description

Model VK4621
Material Brass
Orientation Pendent
Maximum Working Pressure 175 psi (12 bar)
Temperature Rating °F (°C)1 155°F (68°C)-200°F (93°C)
Thread Size 1/2″ NPT (15 mm BSPT)

Application Areas

From soaring commercial towers and industrial plants to vital municipal projects and residential complexes, our firefighting valves provide unmatched reliability where safety matters most. Designed to perform under pressure, they safeguard lives and assets across diverse environments—ensuring your fire protection system is always ready when it counts.

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Why Choose Our Leyon

Engineered for Critical Environments

We deliver reliable firefighting valves with advanced manufacturing, strict testing, and global standards—backed by fast delivery and expert support.

  • Reliable Quality: High-strength materials and precision processes for durability and leak-free performance.
  • Strict Testing: Hydrostatic, air-tightness, and functional tests to meet global fire safety standards.
  • Wide Range: Gate, butterfly, check, hydrant valves, and more for diverse projects.
  • Fast Delivery: Strong production and supply chain ensure on-time delivery.
  • Expert Support: Skilled teams provide guidance from selection to after-sales.

Why Choose Our firdip

A1: Our products meet ISO, UL, FM, CE and other international certifications to satisfy different market and project requirements.

A2: Yes, we offer customization in size, pressure rating, connection type, and surface treatment to meet specific application needs.

A3: Standard models can usually be shipped within 7–15 days. Bulk or customized orders will require confirmation of the exact lead time.

A4: We implement strict raw material inspection, process control, and final product testing, backed by warranty and after-sales support.

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