| 1921 | Viking VK305 - Microfast® Quick Response Horizontal Sidewall Sprinkler (K5.6) | |
| 1922 | Viking VK306 - Microfast® Quick Response Vertical Sidewall Sprinkler (K5.6) | |
| 1923 | Viking VK360 - Quick Response Horizontal Sidewall Sprinkler (K8.0) | |
| 1924 | Viking VK338, VK339 - Microfast QR Stainless Steel Sprinklers (K5.6) | |
| 1925 | Viking VK343 - Microfast® HP Quick Response Fusible Element Pendent High Pressure Sprinkler (K2.8) | |
| 1926 | Viking VK341 - Microfast® HP Quick Response Fusible Element Upright High Pressure Sprinkler (K2.8) | |
| 1927 | Viking VK326 - Microfast® Quick Response Fusible Element Upright Sprinkler (K2.8) | |
| 1928 | Viking VK330 - Microfast® Quick Response Fusible Element Pendent Sprinkler (K2.8) | |
| 1929 | Viking VK346 - Microfast® HP Quick Response Fusible Element Horizontal Sidewall High Pressure Sprinkler (K2.8) | |
| 1930 | Viking VK334 - Microfast® Quick Response Fusible Element Horizontal Sidewall Sprinkler (K2.8) | |
| 1931 | Viking VK301 - Microfast® Quick Response Fusible Element Upright Sprinkler (K5.6) | |
| 1932 | Viking VK328 - Microfast® Quick Response Fusible Element Upright Sprinkler (K4.2) | |
| 1933 | Viking VK332 - Microfast® Quick Response Fusible Element Pendent Sprinkler (K4.2) | |
| 1934 | Viking VK316 - Microfast® HP Quick Response Fusible Element Upright High Pressure Sprinkler (K5.6) | |
| 1935 | Viking VK311 - Microfast® Quick Response Conventional Fusible Element Sprinkler (K5.6) | |
| 1936 | Viking VK318 - Microfast® HP Quick Response Fusible Element Pendent High Pressure Sprinkler (K5.6) | |
| 1937 | Viking VK307 - Microfast® Quick Response Fusible Element Horizontal Sidewall Sprinkler (K5.6) | |
| 1938 | Viking VK303 - Microfast® Quick Response Fusible Element Pendent Sprinkler (K5.6) | |
| 1939 | Viking VK320 - Microfast® HP Quick Response Fusible Element Horizontal Sidewall High Pressure Sprinkler (K5.6) | |
| 1940 | Viking VK351 - Microfast® Quick Response Fusible Element Upright Sprinkler (K8.0) | |
| 1941 | Viking VK309 - Microfast® Quick Response Fusible Element Vertical Sidewall Sprinkler (K5.6) | |
| 1942 | Viking VK355 - Microfast® Quick Response Fusible Element Conventional Sprinkler (K8.0) | |
| 1943 | Viking VK353 - Microfast® Quick Response Fusible Element Pendent Sprinkler (K8.0) | |
| 1944 | Viking VK600 - Microfast® EC/QREC Pendent Sprinkler (K5.6) | |
| 1945 | Viking VK610 - Microfast® SR/QREC Pendent HP Sprinkler (K5.6) | |
| 1946 | Viking VK632, VK634 - Mirage® QREC Concealed Pendent Sprinklers (5.6 and 8.0 K Factor) | |
| 1947 | Viking VK602 - Microfast® EC/QREC Pendent Sprinkler (K8.0) | |
| 1948 | Viking VK534 - EC/QREC Pendent Sprinkler (K11.2) | |
| 1949 | Viking VK532 - EC/QREC Upright Sprinkler (K11.2) | |
| 1950 | Viking VK538 - Mirage EC/QREC OH-ELO Concealed Pendent Sprinkler (K11.2) | |