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December 4, 2013

Sprinkler 41a

tecHnical data

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: techsvcs@vikingcorp.com

1. descriPtion

Viking Microfast® and MicrofastHP® Quick Response Pendent Sprinklers are small, thermosensitive, glass-bulb spray sprinklers available in several different finishes and 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 ad- dition, these coatings have been investigated for installation in corrosive atmos- pheres and are listed/approved as corrosion resistant as indicated in the Approval Charts. (Note: fm Global approves ent finish as corrosion resistant. FM Global has no approval classification for PTFE and Polyester coatings as corrosion resist-


2. listinGs and aPProVals

culus listed: Category VNIV fm approved: Classes 2001, 2002, 2015, and 2017 nYc approved: Calendar Number 219-76-SA and MEA 89-92-E, Volume 16 aBs certified: Certificate 04-HS407984C-PDA Vds approved: Certificates G4040095, G4040097, G4060056, G4060057, G4880045, G4930038, and G4980021 lPc approved: Ref. Nos. 096e/03 and 096e/04 ce certified: Standard EN 12259-1, EC-certificates of conformity 0786-CPD-40130, 0786-CPD-40170 and 0786-CPD- Pn 12979 Pn 06666B

40279, 0832-CPD-2001, and 0832-CPD-2003 med certified: Standard EN 12259-1, EC-certificate of conformity 0832-MED-1003 and 0832-MED-1008

note: Other International approval certificates are available upon request.

Refer to Approval Chart 1 and Design Criteria on page 41d for cULus Listing requirements and refer to Approval Chart 2 and Design Criteria on page 41f for FM Approval requirements that must be followed.

3. tecHnical data

specifications: Available since 1987. Minimum Operating Pressure: 7 psi (0.5 bar)* maximum Working Pressure: sprinklers 12282 and 12290 are rated for Viking technical data may be found on the Viking corporations Web site at http://www.vikinggroupinc.com. the Web site may include a more recent edition of this technical data Page. 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-pres- sure (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) Thread size: Refer to the Approval Charts Nominal K-Factor: Refer to the Approval Charts Glass-bulb fluid temperature rated to -65 °F (-55 °C) Overall Length: Refer to the Approval Charts *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 Approvals ONLY is 5 psi (0.35 bar).

material standards: Frame Casting: Brass UNS-C84400 or QM Brass for Sprinklers 12979 and 12282. Brass UNS-C84400 for all other sprinklers. Deflector: Phosphor Bronze UNS-C51000 or Copper UNS-C19500 for Sprinklers 12979, 06666B, and 06765B. Copper UNS-

C19500 for Sprinkler 12282. Phosphor Bronze UNS-C51000, Copper UNS-C19500 or Brass UNS-C26000 for Sprinkler 06720B. Brass UNS-C26000 for all other Sprinklers. Bushing (for Sprinklers 06718B, 06720B, and 12290): Brass UNS-C36000 Bulb: Glass, nominal 3 mm diameter Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape Screw: Brass UNS-C36000 Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400 For PTFE Coated Sprinklers: Belleville Spring-Exposed, Screw-Nickel Plated, Pip Cap-PTFE Coated For Polyester Coated Sprinklers: Belleville Spring-Exposed For ENT Coated Sprinklers: Belleville Spring-Exposed, Screw and Pipcap - ENT coated.

Form No. F 081296


Replaces page 41a-f, dated June 28, 2013. (Changed 06932B to VK3311.)

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