Prepped for install but never used. Has some minor shelf wear scuffs and blemishes (please see pictures closely for more detail.) 30 day money back guarantee.
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MFR Details:
1. DESCRIPTION
Viking Standard Response Upright Sprinkler VK598 is a thermosensitive glass bulb
spray sprinkler available in various temperature ratings to meet design requirements.
The 25.2 nominal K-Factor provides greater flows at lower pressures to protect higher
ceiling and storage heights.
For specific application details, refer to applicable FM Global Loss Prevention Data
Sheets and the FM tables and charts within this Technical Data Sheet, or to the latest
edition of NFPA 13.
2. LISTINGS AND APPROVALS
FM Approved: Class 2029
Refer to Approval Chart and Design Criteria for FM Approval requirements
that must be followed.
Approved for use in FM Approved vacuum dry sprinkler systems with a
maximum supervisory vacuum pressure of -3 psi (-207 mbar).
3. TECHNICAL DATA
Specifications:
Available since 2014
Maximum Working Pressure: 175 psi (12 bar).
Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 1” NPT or 25 mm BSPT
Nominal K-Factor: 25.2 U.S. (363 metric)
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 3-1/4” (83 mm)
Material Standards:
Sprinkler Frame: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Bulb: Glass, nominal 5 mm diameter
Pip Cap: Copper UNS-C11000 and Stainless Steel UNS-S30400
Compression Screw: Stainless Steel UNS-S31603 or ENT coated Brass UNSC36000
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape