Viking VK4621 Technical Data Manual page 4

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Sprinkler Thread Size Nominal K-factor
Base Part SIN
NPT
No.
1
24682A VK4621 1/2"
24682JN VK4621 1/2"
7,8
22962A VK4621 --
22962JN VK4621 --
7,8
24682A VK4621 1/2"
24682JN VK4621 1/2"
7,8
22962A VK4621 --
22962JN VK4621 --
7,8
Sprinkler Temperature Ratings
A = 155 °F (68 °C)
B = 175 °F (79 °C) and 200 °F (93 °C)
Part number shown is the base part number. For complete part number, refer to current Viking price list schedule.
1.
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.
2.
This chart shows the listings and approvals available at the time of printing. Other approvals may be in process. Check with the manufacturer for any additional approvals.
3.
Listed by Underwriter's Laboratories for use in the U.S. and Canada.
4.
The 135 °F (57 °C) [139 °F (59 °C)] covers have an orange label. The 165 °F (74 °C) covers have a white label.
5.
Other paint colors are available on request with the same listings as the standard paint colors. Listings and approvals apply for any paint manufacturer. Contact Viking
6.
for additional information.
cULus Listed as corrosion resistant.
7.
FM Approved as a decorative finish.
8.
NOTE: Custom colors are indicated on a label inside the cover assembly. Refer to Figure 2.


Form No. F_092121 Rev 01
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Concealed Pendent Sprinkler VK4621
BSPT U.S. metric cULus
2
Standard Response Applications
-- 5.6 80.6
-- 5.6 80.6
1/2" 5.6 80.6
1/2" 5.6 80.6
Quick Response Applications
-- 5.6 80.6 250 psi (17.2 bar)
-- 5.6 80.6 250 psi (17.2 bar)
1/2" 5.6 80.6 250 psi (17.2 bar)
1/2" 5.6 80.6 250 psi (17.2 bar)
Cover Plate Assembly Temperature Ratings
S - 135 °F (57 °C) cULus Listed or 139 °F (59 °C) FM Approved Stainless Steel
cover 23193 and 23455, or 23183 and 23473 (large diameter)
T - 165 °F (74 °C) Stainless Steel cover 23193 and 23455 or 23183 and 23473
(large diameter)
V - 135 °F (57 °C) cULus Listed or 139 °F (59 °C) FM Approved cover 23190
and 23447, 23174 and 23463 (large diameter), or 23179 and 23482 (square
cover plate)
X - 165 °F (74 °C) cover 23190 and 23447, or 23174 and 23463 (large diameter)
Y - 135 °F (57 °C) Clean Room Cover 23174A-/CR and 23463A-/CR or
135 °F (57 °C) Stainless Steel Clean Room Cover 23183A/CR and
23473A/CR
Z - 165 °F (74 °C) Clean Room Cover 23174C-/CR and 23463C-/CR
April 2023
TECHNICAL DATA
Approval Chart
Maximum
Water Working Pressure
FM
-- 175 psi (12 bar)
-- 175 psi (12 bar)
-- 175 psi (12 bar)
-- 175 psi (12 bar)
--
--
--
--
Footnotes
STANDARD AND
QUICK RESPONSE
CONCEALED PENDENT
SPRINKLER VK4621 (K5.6)
Listings and Approvals
(Refer also to Design Criteria)
cULus
4
--
--
--
--
AV1, BX1, AS2, BT2, AY3, BZ3
AV1, BX1, AS2, BT2, AY3, BZ3
AV1, BX1, AS2, BT2, AY3, BZ3
AV1, BX1, AS2, BT2, AY3, BZ3
5
Page 4 of 8
3
FM
AV1, BX1, AS2, BT2
AV1, BX1, AS2, BT2
AV1, BX1, AS2, BT2
AV1, BX1, AS2, BT2
--
--
--
--
Cover Plate Assembly
Finishes
1 - Polished Chrome,
Brushed Chrome,
Bright Brass, Antique
Brass, Brushed Brass,
Brushed Copper,
Painted White,
6
Painted Ivory, or
6
Painted Black
6
2 - Stainless Steel
3 - Polished Chrome,
Painted White, Painted
Ivory, or Painted Black