Viking® VK1001 Upright Sprinkler | SR | 5.6K | Brass | 286F | 23867AG

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Viking VK1001 Brass 286F SR Upright 23867AG Hero Image | QRFS
Viking VK1001 Brass 286F SR Upright 23867AG Deflector Image | QRFS
Viking VK1001 Brass 286F SR Upright 23867AG Side 1 Image | QRFS
Viking VK1001 Brass 286F SR Upright 23867AG Side 2 Image | QRFS
Viking VK1001 Brass 286F SR Upright 23867AG Threads Image | QRFS
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Viking VK1001 Brass 286F SR Upright 23867AG Hero Image | QRFS
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This Viking XT1 Standard Response Brass Upright Fire Sprinkler features a 5mm glass bulb activating at 286F (141C) with a 5.6 K-Factor, and 1/2 in. NPT threads. Each standard response head features a brass body, stainless steel deflector, and nickel alloy spring. The manufacturer part number is 23867AG and the Sprinkler Identification Number (SIN) is VK1001.

This sprinkler’s stainless-steel deflector and laser-etched markings provide corrosion resistance and make the sprinkler identification number and listing information easy to read over time. The nickel-alloy spring and design pushes the glass bulb away from the inner water way providing a clean activation when you need it most.

This sprinkler replaces and improves upon the Viking VK100 (manufacturer part number 12986AG), with a reduced size (as short as 1 1/2 in. when installed), a corrosion-resistant deflector, a smooth and finish-ready frame, and a laser-etched deflector. Additionally, in 2021, the VK1001 (manufacturer part number 19914AG) frame was improved upon to reduce wrench slippage during installation – the old frame is angled, and the newest frame is squared. Note, the angled frame (the old VK1001 with part number 19914) uses a different installation wrench than the current listed accessories. The old installation wrench manufacturer part number is 22055.

Each XT1 sprinkler is made by Viking, a global leader in fire protection manufacturing for nearly 100 years. This upright fire sprinkler head maintains UL Listing: Category VNIV, FM Approved: Classes 2016, 2043, CE: Standard EN12259-1, COP_XT1A, LPCB Approved: reference no. 0096m, and VdS Approved: Certification no. F 422003.

The VK1001 is standard coverage sprinkler and cULus approved for use in Light, Ordinary, and Extra Hazard occupancies when installed in accordance with NFPA 13 requirements for standard spray sprinklers. With a maximum working pressure of 250 PSI (17.2 BAR) UL Listed or 175 PSI (12.1 BAR) FM, CE, LPCB, and VdS Listed, this upright sprinkler installs deflector-up to prevent debris and ice accumulation and appropriate for use in fire protection systems when accepted by the authority having jurisdiction.

During installation be aware that over tightening will cause permanent damage to the sprinklers. Use the manufacturer approved installation wrench and tighten to a maximum torque of 14 ft-lb (19 N-m). Refer to the data sheet for additional storage and installation information.

This upright sprinkler features a Brass finish and 286F (141C) temperature. Additional finishes include Chrome, White Polyester, Black Polyester, and Electroless Nickel Teflon (ENT). White Polyester, Black Polyester, and ENT are UL Listed as corrosion resistant. ENT also is FM Approved as corrosion resistant. Additional temperatures include 135F (57C), 155F (68C), 175F (79C), 200F (93C), and 286F (141C). Finish and temperature combinations available in the “Options” section at the top of this product page. Open sprinklers, no bulb, and ENT available upon request.

VK1001 listed accessories include the straight wrench, manufacturer part number (23559MB), and the XG headguard, manufacturer part number (23930). Commonly purchased with fire sprinkler head cabinets and sprinkler shut off tools. These products are available in the “Frequently bought together” products section at the top of this product page.


Manufacturer Part Number:
Replaces Manufacturer Part Numbers:
19914AG, 12986AG
Head Type:
Finish Detail:
Rough Brass
1/2 in.
Size Detail:
1/2 in. NPT Sprinkler
K Factor:
Response Type:
Standard Response (SR)
Heat Element:
Glass Bulb
Standard Coverage
Brass Frame, Stainless Steel Deflector
Corrosion Resistant:
May Contain Lead:
UL Listed:
FM Approved:
Maximum Working Water Pressure:
UL=250 PSI, FM=175 PSI
1.51 in. (38.35 mm)
1.51 in. (38.35 mm)
1.95 in. (49.53 mm)
0.16 lb. (0.07 kg)
Box/Pack Quantity:
Carton Quantity:


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