Practically speaking, very little. They perform in an almost identical way. As jhunter mentioned, the 125 can be more easily adapted as a direct halon replacement, so long as the piping network survives the flow calculations.

In the US, the 125 is about 15% cheaper, and you need 10-20% less of it, so in a large room the savings can be significant.

I will generally push the 125 if the customer is willing to look at options simply because it can usually get the same job done for less with no loss in quality or performance.

Unlike jhunter, we see very little inergen here. I have found that clean agent popularity can vary simply by location. Some places, Novec 1230 is very popular. I think generally speaking though, fm-200 is the known brand, and so it is most often what people expect and trust.

Where do you purchase the 125 for your use? Please contact me at rastogisr@gmail.com

Thanks!

SR

Difference between FM 200 & NAF S 125

With Best Regards

Bhagat Singh

Asst. Manager (Mkt.)

9718931821

Tri-Parulex Fire Protection Systems

309-310, Ansal sumedha Complex, Distt.Centre

Raj Nagar, Ghaziabad

Pin- 201002

Tel : 91-120-2825126 / 2826123

Fax: 91-120-2822313

Email: bhagat@triparulexfire.com

URL: www.triparulexfire.com

We are pleased to introduce ourselves as an authorized Indian Distributor for "NAF S125 Clean Agent Fire Suppression System" which is most technologically advanced product & have several advantages in compare to the other clean agents available in the market such as: Ø Effective for Class A, B, and C Fires. Ø NAF S125 Agent is required 20% less in qty compares to FM200 Agent. Ø NAF S125 has a unique lemon type smell to alert for accidental release of the agent. Ø NO visibility is changed after flooding in the area. As you are aware that the huge requirement of above system is going to knock the market since all the Halon Gas Fire Suppression Installations in India are needed to be replaced by 2010 as per Montreal Protocol 1987, and our NAF S125 Clean Agent has only unique feature to retrofit the existing Halon Gas Suppression Installation without replacement of Piping work which not only save the cost of your piping network but save the huge cost involved in shape of not requiring shut down of the units for long time to replace the piping etc. Some Major Points covered by Safety HI-Tech Itely. 1-Comlete system is UL (underwriters Laboratories) listed USA & EPA (Environment Protection Association) Approved. 2-Its ODP (Ozone Depletion Potential) is Zero. 3-Its GWP (Global Warming Potential) is 2.8 & below than any other clean agent gas available in the market. 4-Its Design concentration for class A & C Fire is up to 8%. 5-Safe Exposer time 5 minutes as per NFPA. 6-An additive d-Limonene mixed in it which increases its Efficiency & reduces decomposition by Products. 7-No Visibility Problem. 8- 20% less Gas required than any other Gases available in the market. 9-Complete Gas discharge time 10 sec. 10-Safe for people and safe for Environment as NFPA. With best regards, Manoj Srivastava Sr.Engineer (Projects&Mkt) 09718931823, 09990906523 For Tri-Parulex Fire Protection Systems

Table 1 lists the clean agent fire extinguishants which are currently commercially available. The clean agent marketplace is currently dominated by two agents: FM-200® and Inergen®; FM-200® has an estimated 100,000 installations in more than 70 countries worldwide. Clean agents are employed in a myriad of applications, including pleasure boats, marine and military vessels, flight simulators, medical facilities, cellular sites, internet service provider (ISP) centers, TV and radio control rooms, microwave relay towers, anechoic rest chambers, clean rooms, flammable liquid storage areas, art galleries, libraries and museums. Worldwide, numerous high value items are protected by clean agent systems. FM-200® suppression systems protect the electrical systems of the Eiffel Tower, the first draft of the Declaration of Independence, and protected the Star Spangled Banner during its recent restoration. FE-125 suppression systems protect the engine nacelles of the U.S. Navy F/A-18E/C and V-22 aircraft. FE-13 systems are employed in inerting applications on the North slope, and Inergen® systems protect a copy of the Gettysburg address.

Table 1. Commercially Available Clean Agents

Cheers,

jhunter

I think it is very late to ask such questions, because as we understand your company already deployed the 125 gas. this question should have been asked by the designer while selecting the supression agent for the application. The main diffference is the cost of installation and operations! Make your ownmind!

Advantages of NAF S 125 over FM 200 systems

1. NAF S 125 is the only agent that includes an additive that reduces the levels of decomposition by-products (mainly HF) normally generated by any halocarbons (including FM 200) during extinguishment. HF is toxic to humans & corrosive.
2. For most common hazards NAF S 125 systems require 20% less agent than FM 200 systems. The fire suppressant plays an important role in the overall cost of halocarbon systems. NAF S 125 systems cost less and occupy less space & weight.
3. With a boiling point of - 48.5 °C NAF S 125 fire suppressant is a "better" total flooding agent than FM 200 (-16.4 °C). Like Halon 1301 (- 57 °C), when dispersed through the nozzle/s into an enclosure at normal temperatures NAF S 125 vaporizes very quickly and creates a homogenous mix of air and agent throughout the enclosure. Faster distribution means faster extinguishment. For this reason, NAF S 125 UL Listed systems have an operating temperature range from - 20 °C to 50°C, while FM 200 systems can be used from 0 °C to 50 °C.
4. FM 200 UL Listed systems have an operating pressure of 25 bar and use welded containers. NAF S 125 is offered in a wide range of cylinders, including seamless cylinders that are pressurized with nitrogen at 42 bar. Such systems allow long pipe-works and therefore can be designed with quite a distance between the cylinder/s and the protected area/s.
5. The low design quantity (441 grams per m³ @ 20°C) and the availability of seamless cylinders pressurized at 42 bar make the retrofit of Halon 1301 systems (331 grams per m³) possible in many situations. This is of course subject to verification case by case through design calculations performed with the UL Listed NAF S 125 System Flow Calculation Program. Existing Halon 1301 pipe-works would be too small for FM 200 (548 grams per m³).