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VK638 - Corridor Sprinkler - QREC Horizontal Sidewall Sprinkler (K8.0)

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VK638 - Corridor Sprinkler - QREC Horizontal Sidewall Sprinkler (K8.0)

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Viking's Model VK638 Quick Response Extended Coverage Horizontal Sidewall Sprinkler is designed specifically to protect corridors, hallways, decks, walkways, and any other application where a wide spray pattern is optimal.The VK638 is cULus Listed for Light Hazard occupancies and has a K-factor of 8.0 (115).

The VK638 uses Viking’s patented flow-shaper technology to provide larger coverage areas at lower flow and pressure requirements. The sprinkler is cULus Listed for 28 x 12 ft (8,5 x 3,7 m) and 28 x 14 ft (8,5 x 4,3 m) coverage areas, with the deflector installed up to 12 in (305 mm) below the ceiling. The 28 x 12 ft (8,5 x 3,7 m) coverage area is unique in the industry, providing a significant flow and pressure advantage for fire sprinkler systems where this area of coverage can be applied.

Available in 135°F (57°C), 155°F (68°C), 175°F (79°C), and 200°F (93°C) temperature ratings. The VK638 has a ¾ inch (20 mm) thread size, and is available in standard finishes that include brass, white, chrome, and black as well as a nearly unlimited variety of custom colors.

Viking's Model VK638 Quick Response Extended Coverage Horizontal Sidewall Sprinkler is designed specifically to protect corridors, hallways, decks, walkways, and any other application where a wide spray pattern is optimal.The VK638 is cULus Listed for Light Hazard occupancies and has a K-factor of 8.0 (115).

The VK638 uses Viking’s patented flow-shaper technology to provide larger coverage areas at lower flow and pressure requirements. The sprinkler is cULus Listed for 28 x 12 ft (8,5 x 3,7 m) and 28 x 14 ft (8,5 x 4,3 m) coverage areas, with the deflector installed up to 12 in (305 mm) below the ceiling. The 28 x 12 ft (8,5 x 3,7 m) coverage area is unique in the industry, providing a significant flow and pressure advantage for fire sprinkler systems where this area of coverage can be applied.

Available in 135°F (57°C), 155°F (68°C), 175°F (79°C), and 200°F (93°C) temperature ratings. The VK638 has a ¾ inch (20 mm) thread size, and is available in standard finishes that include brass, white, chrome, and black as well as a nearly unlimited variety of custom colors.

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TECHNICAL DATA SHEETS

TDS - VK638(629.27k)

CERTIFICATE

CERTIFICATE - VK638 - UNDER(198.54k)

DRAWING

DRAWING - VK638 - FIGURE 1(161.88k)

DRAWING - VK638 - FIGURE 2(401.44k)

DRAWING - VK638 - FIGURE 3(232.44k)

DRAWING - VK638 - FIGURE 4(334.94k)

GUIDE

GUIDE - VK638 - COMMERCIAL(469.08k)

REVIT FILES

REVIT - VK638 - EXTENDED - VK638(1.83M)

REVIT - VK638 - HORIZ(1.83M)

Technical Details

Maximum Spacing : 8.5 x 4.3m
Maximum Working Pressure : 175 psi (12 bar)
Minimum Spacing : Per Standards / Listings
Model Number : VK638
Occupancy Type : Light Hazard
Response Type : Quick
Thread Size : 3/4" NPT (20 mm BSP)

Product Information

Viking's Model VK638 Quick Response Extended Coverage Horizontal Sidewall Sprinkler is designed specifically to protect corridors, hallways, decks, walkways, and any other application where a wide spray pattern is optimal.The VK638 is cULus Listed for Light Hazard occupancies and has a K-factor of 8.0 (115).

The VK638 uses Viking’s patented flow-shaper technology to provide larger coverage areas at lower flow and pressure requirements. The sprinkler is cULus Listed for 28 x 12 ft (8,5 x 3,7 m) and 28 x 14 ft (8,5 x 4,3 m) coverage areas, with the deflector installed up to 12 in (305 mm) below the ceiling. The 28 x 12 ft (8,5 x 3,7 m) coverage area is unique in the industry, providing a significant flow and pressure advantage for fire sprinkler systems where this area of coverage can be applied.

Available in 135°F (57°C), 155°F (68°C), 175°F (79°C), and 200°F (93°C) temperature ratings. The VK638 has a ¾ inch (20 mm) thread size, and is available in standard finishes that include brass, white, chrome, and black as well as a nearly unlimited variety of custom colors.

Coverage Area (ft / m)	Flow (gpm / lpm)^*	Pressure (psi / bar)^*
28 x 12¹ (8.5 x 3.7)	34 (128.7)	18.1 (1.24)
28 x 14¹ (8.5 x 4.3)	40 (151.4)	25.0 (1.73)

¹ 4-12” (102-305mm) down from ceiling.
^* Flows and pressures listed above are based on UL Listings only.