Tetissazeh

Firefighting Valves

Firefighting valves are one of the most important components of fire suppression systems in residential, administrative, industrial, and facility buildings. These equipments play a direct role in controlling, directing, and opening or shutting off the flow of water or foam during a fire incident, and their proper performance can make the difference between rapid fire control and catastrophic fire spread.

Also, this company stands alongside you to carry out your projects and to provide services such as fire safety consulting.

Firefighting valves refer to a set of industrial valves specifically designed for fire suppression systems, which are used for:

  • Controlling water pressure and flow rate
  • Distributing water to hoses, sprinklers, and risers
  • Enabling rapid shut‑off of flow in emergency conditions

These valves must be durable, precise, fast‑acting, and compliant with international standards.

The use of non‑standard firefighting valves can cause:

  • Pressure drop at the moment of fire
  • Leakage or breakage due to high pressure
  • Delay in firefighting operations
  • Rejection of the building’s fire department approval

For this reason, the correct selection of firefighting valves is one of the main pillars of building safety. Tettis Sazeh Company executes small projects in accordance with the latest global standards.

Types of Firefighting Valves

Firefighting valves are divided into several main categories based on their function and installation location:

1. Firefighting Gate Valve

Gate valves are used to completely shut off or open the water flow.

Features:

  • Simple and reliable operation
  • Very low pressure loss
  • Suitable for main riser lines and fire networks

2. Firefighting Butterfly Valve

One of the most widely used types of firefighting valves.

Advantages:

  • Lightweight
  • Fast installation
  • Suitable for limited spaces
  • Ability to connect to a supervisory switch (Tamper Switch)

3. Firefighting Check Valve

Used to prevent reverse flow of water.

Main applications in:

  • Pump rooms
  • Sprinkler systems
  • Pressurized lines

4. Alarm Control Valve

This valve is specific to wet sprinkler systems.

  • Activated when a sprinkler opens
  • Simultaneously causes the alarm to sound

5. Firefighting Pressure Reducing Valve

Used to reduce excessive water pressure in lower floors of high‑rise buildings and to prevent damage to equipment.

6. Hydrant Valve

Valves specifically designed for urban and outdoor firefighting use.

  • Installed in outdoor areas
  • Direct connection to fire trucks

Material of Firefighting Valves

Selecting the appropriate material is very important:

  • Ductile Iron: Resistant to pressure and impact – the most common choice
  • Steel: Suitable for high‑pressure and industrial systems
  • Bronze / Brass: Mostly used for small control components
  • Epoxy coating: Used to prevent corrosion and rust

Firefighting Valve Standards

Standard firefighting valves must comply with one or more of the following standards:

  • NFPA (American fire protection standards)
  • UL / FM Approval
  • ISO 9001
  • EN & DIN European standards
  • National Standard of Iran

The presence of these standards guarantees safe performance under critical conditions.

Application of Firefighting Valves

  • Wet and dry risers
  • Sprinkler systems
  • Fire pump rooms
  • Fire hose cabinets
  • Outdoor and open areas
  • Industries and factories

Purchasing Firefighting Valves

Before purchasing, be sure to consider the following:

✅ Type of system (wet, dry, foam, combined)

✅ Working pressure (PN)

✅ Pipe size and diameter

✅ Brand and standard certifications

✅ Ability to install supervisory switches

✅ After‑sales service

Maintenance of Firefighting Valves

Regular maintenance increases lifespan and ensures reliable operation:

  • Periodic opening and closing
  • Leakage inspection
  • Pressure testing
  • Corrosion inspection
  • Recording in the PM log (Preventive Maintenance)

Difference Between Firefighting Valves and Ordinary Industrial Valves

Feature | Firefighting | Industrial

Safety standard | ✅ Yes | ❌ Not necessarily

Emergency operation | ✅ Yes | ❌

Sudden pressure tolerance | ✅ High | Medium

Fire department approval | ✅ Yes | ❌

Firefighting valves are considered the beating heart of fire suppression systems. Proper selection of these valves is not only essential for obtaining fire department approval but also plays a direct role in protecting lives and property.