Topic

Sprinkler Systems

Wet alarm valves, deluge valves, pre-action systems, sprinkler heads and flow indicators for automatic sprinkler protection in commercial and industrial buildings.

Guides & Articles

Fire Protection 2026 · 7 min read

Fire Sprinkler System Valves: A Complete Guide (Wet, Deluge & Pre-action)

How ZSFZ wet alarm, ZSFM deluge, ZSFY pre-action valves and ZSJZ flow indicators work — and when to specify each for your sprinkler system.

In This Guide

  1. 01 1. Wet-Pipe Systems: The ZSFZ Wet Alarm Valve
  2. 02 2. Deluge Systems: The ZSFM Deluge Valve
  3. 03 3. Pre-Action Systems: The ZSFY Dual-Trigger Valve
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Fire Protection 2026 · 7 min read

Fire Sprinkler Systems: Wet, Dry or Pre-action? (2026 Guide)

A practical comparison of wet, dry and pre-action systems, how to select sprinkler heads (K-factor, temperature, response) and the components your BOM needs.

In This Guide

  1. 01 1. The Three System Types Compared
  2. 02 2. Choosing Sprinkler Heads
  3. 03 3. The Components Your BOM Needs
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Fire Protection 2026-09 · 8 min read

Fire Sprinkler Control Valve Types: OS&Y, Butterfly & Check Valves

OS&Y gate, signal butterfly and check valve duties in sprinkler systems, plus a control valve comparison table and a UL/FM specification checklist for B2B buyers.

In This Guide

  1. 01 1. What Fire Sprinkler Control Valves Do
  2. 02 2. OS&Y Gate Valves: Monitored Main Isolation
  3. 03 3. Signal Butterfly Valves for Section Control
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Fire Protection 2026-09 · 8 min read

Fire Sprinkler Head Selection Guide: K-Factor, Temperature & Response (2026)

How to select fire sprinkler heads: K-factor and flow (K=80/K=115), temperature ratings and bulb colour coding, quick vs standard response, pendent/upright/sidewall/concealed orientation and UL listing in the NFPA 13 context.

In This Guide

  1. 01 1. Start With the System Type, Then the Head
  2. 02 2. K-Factor and Flow: Matching Water Delivery
  3. 03 3. Temperature Ratings and Bulb Colour Coding
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Fire Protection 2026-09 · 9 min read

Commercial Building Sprinkler System BOM: Complete Procurement Guide (2026)

Complete BOM for a commercial building sprinkler system: alarm valve groups, OS&Y & signal valves, siamese, sprinkler heads, flow indicators — one package, one PO, verified.

In This Guide

  1. 01 1. Why the Sprinkler Package Is Procured as One Scope
  2. 02 2. The Alarm Valve Group: Heart of the Wet System
  3. 03 3. Monitored Isolation: OS&Y and Signal Butterfly Valves
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