EC-11 (K = 161) series of large coverage upright / sagging / drooping sprinklers for light embedded in danger and dangerous places (NFPA13) EC-11 series of large coverage upright / hanging decorative sprinklers for light-risk and moderate-risk sites According NFPA13 standards, Hunan fm certified gas fire products, head protection area of ??37.2m2, fm certified gas fire products, and standard sprinkler protection in dangerous places in the area is only 12.1m2, regular gas fire fm certified products, in light danger protected area sites only 20.6m2. UL and ULC allow EC-11 series jet nozzle for use in non-combustible barriers impede or ceiling structure and concrete "T" beam structure. RFII series concealed pendent sprinklers only RFII series hidden a metallic appearance or the appearance of white paint cover plate for authentication together. Note: RFII series of nozzles may not be used in the ceiling of the upper air pressure is greater than the ceiling lower part of the place. Downward airflow through the support cup will slow in the next state fire sprinklers operating time. Gold eutectic solder strength is low, should be carefully fitted, the cover plate to unreasonable stress, would cover plate joints cracked, the cover plate off. Shanghai fm certified gas extinguishing product | Year Anyuan Electromechanical | fm certified gas extinguishing products by the Hubei Chong Anyuan Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) is a leader in Wuhan, fire protection equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Anyuan electromechanical leadership in creating the staff warmly welcome all inquiries negotiations to create create a better future for electromechanical Anyuan.