How to recognize and avoid buying fake sprinkler heads

09/01/2023

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1.Cách nhận biết đầu phun sprinkler có dấu hiệu làm giá.

Fire sprinklers are extremely reliable. In fact, when they are thoroughly inspected and installed properly, only 1 in 16 million sprinklers accidentally activate due to manufacturing defects. .

According to the International Fire Protection Alliance (IFSA), there are an estimated 135.8 million sprinkler fire extinguishers were installed worldwide in 2016. While the increased use of these life-saving devices is good news, increasing demand has led to the sale and use of these devices “ “unlisted” and counterfeit sprinkler heads are produced to supply the market. These imitation products may be acceptable for their intended use, but testing often reveals significant defects that render them ineffective in controlling or extinguishing fires.

- The greater danger is that a less safe product will be affected in an emergency when a fire or explosion occurs. This article provides tips on how to spot fakes versus real products, as well as how to check for counterfeit advice online.

- If you need to purchase items for an NFPA 13, 13R or 13D compliant fire sprinkler system for your project, be sure to browse our wide selection of commercial and residential fire sprinklers and other system components.

 

Cách nhận biết và tránh mua đầu phun sprinkler giả

Cấu tạo đầu phun sprinkler

2. How much do you know about certifications and certifications for fire sprinkler heads certified by third parties?

- The two major fire sprinkler system approval organizations - UL (formerly Underwriters Laboratories) and FM Global - play a key role in the advancement of sprinkler technology and the industry standards that define installation and testing.

- All FM Global certified sprinklers are subjected to rigorous testing to evaluate the sprinkler head's durability, reliability and performance in a range of difficult but realistic situations. The approval program includes inspection of the manufacturer's practices and quality control processes, supported by subsequent audits and assessments.

- To become UL Listed, a representative sprinkler must be tested and meet the safety requirements set forth by UL's stringent standards. Sprinklers awarded the UL mark also participate in a continuous monitoring program that tests sprinklers to ensure they meet the organization's performance criteria.

- UL and FM Global are always on the lookout for counterfeit fire sprinklers with fake labels on them. Both organizations publish notices when they discover fire sprinklers that are fake or lack the appropriate product certification mark. In addition, the International Fire Sprinkler Association (IFSA) has reported on certain geographic areas that are prone to the distribution and use of counterfeit sprinklers, specifically pointing to a number of installations. trade place in China.

- For example, a recent IFSA safety alert pointed out serious problems found in two sprinkler models, including one sprinkler model that failed to activate when exposed to the heat of a flare. propane torch!

>>> What is UL/FM standard in pccc?...Reference

+ [T]he installation on two sprinkler models showed that the sprinklers did not demonstrate compliance with ANSI/UL 1767 in the majority of tests conducted. Some of the key safety concerns highlighted include:

+ O-ring water seal: Both types of sprinklers use O-ring water seals. UL banned the use of O-ring water seals more than 10 years ago and many sprinklers use these water seals. This seal has been recalled due to concerns regarding failure to operate as well as leakage in field installation environments.

+ Water Deflectors: Both sprinkler models are marked as ESFR sprinklers, but neither sprinkler is manufactured with a water deflector type that demonstrates the ability to extinguish a fire by Use ESFR sprinkler system design criteria as referenced in NFPA 13 - Sprinkler System Installation. In fact, one of the sprinklers was installed with an extended coverage deflector design rather than an ESFR type deflector design for standard coverage areas.

+ Operational characteristics: The bonded heat response element used for one of the sprinkler models operates very slowly or does not operate at all when the propane torch is lit. For sprinkler models equipped with a glass bulb heat-reaction element, the strut is located on the nozzle splitter, which causes a significant portion of the water to be discharged upward into the deflector instead of downward. when necessary to effectively attack highly challenging fires. .

3. Instructions for reading parameters on sprinkler heads

- NFPA 13: Standard for sprinkler system installation provides specific requirements that allow you to define a fire sprinkler pattern: - From the 2019 edition of NFPA 13

- Sprinkler identification. All sprinklers shall be permanently marked with one or two capital English letters to identify the manufacturer, immediately followed by three or four numbers, to uniquely identify a sprinkler in terms of K-factor, deflection properties, pressure ratings and thermal sensitivity.

- This alphanumeric sprinkler identification number (SIN) provides a way to identify the manufacturer and find operating specifications for the model. The SIN is usually located on the deflector and is rarely stamped on the frame of the sprinkler. Once you have this number, you can look up the make and model in the SIN Directory (UL account required) or just use a search engine. If the fire sprinkler is not stamped SIN, it was manufactured before 2001 and/or it is not third-party certified

Cách nhận biết và tránh mua đầu phun sprinkler giả

Thông số kỹ thuật và tiêu chuẩn của đầu phun sprinkler

This ID method only works consistently for sprinklers manufactured after December 31, 2000, which is when NFPA requires markings on new models. Older sprinklers may have multiple logos and lettering stamped on the frame or deflector plate, requiring you to try a little harder to identify them. For an in-depth review of how to identify sprinkler heads — new or old — read these previous guides

4. Choose wisely when buying fire sprinkler heads

Advances in counterfeiting techniques can make it difficult to distinguish between counterfeit and genuine products until the former becomes defective. However, there are some basic steps you can take to help you identify and avoid fake sprinklers.

* Buy directly from a trusted supplier. One of the best ways to stay away from fake sprinklers is to always buy listed brands from reputable suppliers. There is a greater risk of counterfeiting if you cannot trace the product back to the original manufacturer. Reputable sprinkler manufacturers are expanding their distribution facilities to help dealers stock and deliver genuine products quickly and efficiently to customers.

* Conduct detailed assessments. Counterfeiters are increasingly sophisticated, using clever concealment techniques and below-market prices to attract customers. To verify the authenticity of your sprinkler, carefully evaluate it in order:

- Look for UL or FM certification marks. Be suspicious of poor quality labels with unclear brand identifiers, incorrect or omitted date codes, and extraneous labels not applied by the original supplier.

- Read packaging and labels carefully. Packaging must identify the manufacturer and include contact information. The text must be grammatically correct and free of conflicting statements.

- Be wary of bargain prices. Evaluate price compared to similar sprinklers from different suppliers. If the price seems too good to be true, it probably is. - Use tools provided by the original manufacturer or certification organizations to verify sprinkler authenticity. Avoid products that do not display any brand association.

- Do your research. Both UL and FM Global provide regular updates and consultations on counterfeit and defective sprinklers and present their findings in summary reports.

* Check manufacturer identification. As detailed above, validate the Sprinkler Identification Number (SIN)

. * Report problematic products. If you believe the sprinkler is counterfeit, notify the brand owner immediately. They will attempt to authenticate the suspect product and take appropriate steps to remove potentially harmful sprinklers from the market. If you can't find the brand's contact details, don't let that stop you. Contact the National Intellectual Property Rights Center (IPR), which will provide the necessary details for an appropriate response.

Cách nhận biết và tránh mua đầu phun sprinkler giả

Nhận biết đầu phun sprinkler giả

5. How to update the latest knowledge about sprinkler heads?

- Các khuyến cáo về hàng giả do các cơ quan kiểm tra ban hành thường bao gồm các cách cụ thể để phát hiện vòi phun chữa cháy giả, chẳng hạn như cách được đánh dấu bên dưới từ UL , cho thấy vòi phun chữa cháy giả mang nhãn hiệu UL giả cho Hoa Kỳ và Canada.

- The chrome plating on the frame of the sprinkler can be used to identify the fake model. In the image above, the surface of the fake sprinkler (left) is smooth and highly reflective while the real thing retains its rough, chrome-plated molded surface. There are also differences in the font type and size of the marks on the wrench, as indicated by the red arrows.

- The other obvious difference is the profile on the conveyor screw, indicated by the blue arrows. The conveyor screw threads on the fake sprinkler head extend down to where it meets the bulb; In a true sprinkler, the threads terminate just below the screw conveyor. The conveyor screw diameter also decreases significantly inward down to where it contacts the bulb on the actual nozzle.

Cách nhận biết và tránh mua đầu phun sprinkler giả

 

6. UL and FM certification organizations warn that sprinkler head models may be counterfeit

- Sprinkler certification represents a manufacturer's guarantee of the performance of their products and provides purchasers and end users with confidence that fire sprinkler systems will perform as expected in a fire sprinkler system. on fire. You can be assured of a quality product if it is made by a legitimate manufacturer. By relying on thoroughly tested and certified sprinklers, building and business owners reduce or eliminate fire losses, stay safe and minimize fire risk costs. Castle.

- If you need to purchase items for your NFPA 13, 13R or 13D compliant fire sprinkler system, be sure to browse our wide selection of commercial and residential fire sprinklers and components. system part.

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Mặt dây chuyền TY3251;

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Nguồn : https://www.qrfs.com/blog/

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