Viking Micromatic® and MicromaticHP® Standard Response Upright and Conventional (Old Style) Sprinklers are small, thermosensitive, glass-bulb
spray sprinklers available in several different finishes, temperature ratings, and K-Factors to meet design requirements. The special Polyester, Polytetrafluoroethylene (PTFE), and Electroless Nickel PTFE (ENT) coatings can be used in decorative applications where colors are desired. In addition, these coatings have been investigated for installation in corrosive atmospheres and are cULus listed as corrosion resistant.
Viking standard response sprinklers may be ordered and/or used as open sprinklers (glass bulb and pip cap assembly removed) on deluge systems
Available since 1997.
Minimum Operating Pressure: 7 psi (0.5 bar)*
K Factor: 2.8, 4.2, 5.6 & 8.0
Maximum Working Pressure: Sprinklers Vk021 and Vk124 are rated for use with water working pressures ranging from the minimum 7 psi (0.5 bar) up to 250 psi (17 bar) for high-pressure systems. High-pressure (HP) sprinklers can be identified by locating “250” stamped on the deflector. All other Part Nos. not mentioned above are rated to a maximum 175 psi (12 bar) wwp.
Factory tested hydrostatically to 500 psi (34.5 bar)
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
*cULus Listing, FM Approval, and NFPA 13 installs require a minimum of 7 psi (0.5 bar). The minimum operating pressure for LPCB and CE inimum operating pressure for LPCB and CE
Approvals ONLY is 5 psi (0.35 bar).