Viking VK535 Technical Data Manual

Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
1. DESCRIPTION
Viking EC/QREC Ordinary Hazard ELO Fusible Element Sprinkler VK535 is a thermosensitive
spray sprinkler available in several different finishes and temperature ratings to meet varying
design requirements. The extra-large orifice produces the flows required to meet Ordinary
Hazard density requirements at lower pressures than standard orifice or large orifice
sprinklers. Upright Sprinkler VK535 is UL Listed as standard response and FM Approved as
quick response. The special Polyester
be used in decorative applications where colors are desired. In addition, the ENT coating
has been investigated for installation in corrosive environments and is Listed/Approved as
indicated in the Approval Chart(s).
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Class 2022
Refer to the Approval Chart(s) and Design Criterion for listing and approval requirements
that must be followed.
cULus Listing requires the spacing between upright VK535 sprinklers to be a minimum
of 13 ft. (4 m) to prevent cold soldering.
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: Refer to the Approval Charts.
Maximum Working Pressure: 175 psi (12 Bar).
Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4" NPT
Nominal K-factor: 11.2 U.S. (161.3 metric
† Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Overall Length: 2-5/16 (59 mm)
Material Standards:
Sprinkler Frame: Brass UNS-C84400
Deflector: Copper UNS-C19500 for Sprinkler
Fusible Element Assembly: Nickel Alloy
Trigger and Support: Stainless Steel UNS-S31600
Seat and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Screw: Brass UNS-C36000
For Polyester Coated Sprinklers: Belleville Spring-Exposed
For ENT Coated Sprinklers: Belleville Spring-Exposed, Screw and Pip Cap-ENT Coated
Ordering Information: (Also refer to the current Viking price list.)
Order EC/QREC Ordinary Hazard ELO Fusible Element Sprinklers by first adding the appropriate suffix for the sprinkler finish
and then the appropriate suffix for the temperature rating to the sprinkler base part number.
Finish Suffix: Brass = A, Chrome = F, White Polyester = M-/W, Black Polyester = M-/B, and ENT = JN
Temperature Suffix (°F/°C): 165°/74° = C and 205°/96° = E
For example, sprinkler VK535 with a Brass finish and a 165 °F/74 °C temperature rating = Part No. 14139AC
Available Finishes And Temperature Ratings:
Refer to Table 1.
Accessories: (Also refer to the Viking website.)
Sprinkler Wrenches:
Standard Wrench: Part No. 05118CW/B (available since 1981)
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A (available since 1971)
B. Twelve-head capacity: Part No. 01725A (available since 1971)
Form No. F_072014 20.06.04
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
and Electroless Nickel PTFE (ENT)
)
†
Rev 20.1
STANDARD/QUICK RESPONSE
ECOH ELO FUSIBLE ELEMENT
UPRIGHT SPRINKLER VK535 (K11.2)
coatings can
Replaces Form No. F_072014 Rev 19.3
(Remove Black PTFE; removed 20mm)
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