December 4, 2013
microfast® and microfastHP® quick resPonse Pendent sPrinklers
the Viking corporation, 210 n industrial Park drive, Hastings mi 49058 telephone: 269-945-9501 technical services: 877-384-5464 fax: 269-818-1680 email: firstname.lastname@example.org
approval chart 2 (fm)
microfast® quick response Pendent sprinklers maximum 175 Psi (12 bar) WWP
sprinkler Base Part no.1
fm approvals3 (refer also to design criteria below.)
A2X, B2Y, C3, D3Z
20 mm 15 mm
large orifice 115.2 115.2 small orifice4
06718B6 VK329 1/2”
A2X, B2Y, C3, D3Z A2X, B2Y, C3, D3Z
approved temperature ratings
A - 135 °F (57 °C), 155 °F (68 °C), 175 °F (79 °C), 200 °F (93 °C), and 286 °F (141 °C)
B - 135 °F (57 °C), 155 °F (68 °C), 175 °F (79 °C), and 200 °F (93 °C)
C- 155 °F (68 °C), 175 °F (79 °C), 200 °F (93 °C), and 286 °F (141 °C)
D - 155 °F (68 °C), 175 °F (79 °C), and 200 °F (93 °C)
Z - Standard surface-mounted escutcheon or recessed with the Viking Micromatic® Model E-1
A1X approved escutcheons
approved finishes 1 - Brass and Chrome
2 - Brass, Chrome, White Polyester5, and Black Polyester5 3 - ENT8
X - Standard surface-mounted escutcheon or the Viking Microfast® Model F-1 Adjustable Escutcheon
Y - Standard surface-mounted escutcheon or the Viking Microfast® Model F-1 Adjustable Escutcheon or recessed with the Viking Micromatic® Model E-1, E-2, or E-3 Recessed Escutcheon
footnotes Base part number is shown. For complete part number, refer to Viking’s current price schedule. Metric K-factor measurement shown is when pressure is measured in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0. This table shows the listings and approvals available at the time of printing. Check with the manufacturer for any additional approvals.
FM Approved as quick response control mode standard spray non-storage sprinklers. For specific application and installation requirements, reference the latest applicable FM Loss Prevention Data Sheets (including Data Sheet 2-0).
Other colors are available on request with the same Listings and Approvals as the standard colors. The sprinkler orifice is bushed. The 1/2” NPT Large Orifice Sprinkler is Listed and Approved for retrofit only. FM approved as corrosion resistant.
desiGn criteria - fm
(Also refer to Approval Chart 2 above.)
fm approval requirements:
The sprinklers indicated in Approval Chart 2 are FM Approved as quick response non-storage standard spray pendent sprinklers as indicated in the FM Approval Guide†. For specific application and installation requirements, reference the latest applicable FM Loss Prevention Data Sheets (including Data Sheets 2-0 and 8-9). FM Global Loss Prevention Data Sheets contain guidelines relating to, but not limited to: minimum water supply requirements, hydraulic design, ceiling slope and obstructions, minimum and maximum allowable spacing, and deflector distance below the ceiling.
note: the fm installation guidelines may differ from culus and/or nfPa criteria.
Sprinklers VK302 and VK352 are also FM Approved as quick response rack storage standard spray pendent sprinklers. Refer to technical data
page 131a-e for Intermediate Level In-Rack Sprinklers.
imPortant: always refer to Bulletin form no. f_091699 - care and Handling of sprinklers. also refer to page qr1-3 for gen- eral care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest edition of Viking technical data, the appropriate standards of nfPa, fm Global, lPcB, aPsad, Vds or other similar organizations, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable.
Form No. F 081296
Replaces page 41a-f, dated June 28, 2013.
(Changed 06932B to VK3311.)