Extra-large orifice sprinklers

Extra-large orifice sprinklers from Viking offer not only the advantages you've come to value in ELO designs, but new refinements as well. They combine the simplicity of design that architects and engineers want with the flexibility contractors need.

These sprinklers, available in either standard response or quick response, offer the rare combination of an unusually small size and low profile, and the largest K-Factor in their class. That means for the first time, there's no conflict between the demands of design and the benefits of increased flow.

The resulting pressure savings means you can provide necessary coverage and densities even with a weak water supply. Increased flow at the same end-head pressure opens the door to even greater flexibility: You can increase densities and therefore hazard classifications, often without reworking piping. Or, simply make maximum use of the allowable spacing at any given density. Ultimately, this flexibility translates to cost savings, reduced pipe sizing, and the possibility of downsizing or even eliminating a fire pump.

Viking's ELO Standard Response Upright VK530 (Model M) Sprinkler and ELO Quick Response Sprinkler VK531 (Model M) have also been specifically tested and approved for use in high piled storage occupancies (Standard Response Sprinkler VK530 by UL, cUL and FM; Quick Response Sprinkler VK531 by UL). They offer the lowest profile (2 3/4") of any competing sprinklers and exemplify the traditional attention to detail that you've come to expect from Viking. Due to efficiency of design and the utilization of all high-quality alloys and metallic parts (except for the rugged, time proven glass bulb), you can count on Viking products to perform over decades.

Underwriter's Laboratories have also granted Extended Coverage listings to Viking ELO Sprinklers for spacings up to 20 feet by 20 feet, for both light hazard and ordinary hazard applications. Viking's Standard Response Extended Coverage Ordinary Hazard ELO Upright Sprinkler VK532 is FM Approved for spacings up to 16 feet by 16 feet.

These versatile sprinklers also offer minimum spacing requirements that are as low as eight feet between sprinklers; among the best available for any extra large orifice, extended coverage, ordinary hazard sprinkler on the market. This versatility makes planning and installation simple.

When an application calls for extended coverage, there's no longer any reason to worry about spacing or about the high pressure requirements of 1/2 inch and large orifice sprinklers. When a marginal water supply might require the addition of a pump, the Viking ELO end-head pressure may allow elimination of the pump from the installation.

Viking ELO sprinklers simplify installation by eliminating the need to mix and match sprinkler models to meet varying requirements. Even escutcheon selection is easy. It utilizes the familiar Model E-1 Recessed Escutcheon for all applications, while providing the flexibility of a full 5/8-inch of adjustment. Installation is easier and more cost effective due to the reduced number of different sprinkler and escutcheon parts needed.

Horizon™ Flush Sprinklers

Viking's Horizon™ Flush Style Sprinklers provide limitless possibilities for system designers and installers. Combining rugged dependability with dynamic styling, they won't easily be damaged during installation. Designed for use with concealed piping, the units are mounted flush with the ceiling or wall, with the fusible link exposed. The two-piece design allows the installation and testing of the sprinklers prior to the installation of the ceiling or wall.

Horizon™ pendent sprinklers are available in standard response, quick response, and residential models. Design options include chrome, bright brass, white, navajo, or black with a matching adjustable escutcheon ring threaded in standard 2-11/16" OD, optional 3-1/4" OD, push-on in standard 2-11/16" OD, or optional 3" OD. The separate decorative ceiling rings allow for up to 5/16" of vertical adjustment.

Viking's Horizon™ VK420 (Model H-3) Small Orifice Residential Pendent Sprinkler has a 3.8 U.S. K-Factor and is listed at square spacings with single-side dimensions of 12, 14, 16, 18 and 20 feet. The flows at which it is listed are among the lowest in the industry as evidenced by the single/multiple sprinkler flows of 13/11 gallons per minute at 16 x 16 feet spacing. It is also the only flush sprinkler that has been specifically tested and listed for use on sloped ceilings. It can be installed on sloped ceilings with pitches up to 6 inches in 12 inches at spacings up to 16 x 16 feet, when single/multiple flows of 16/12 gallons per minute are provided. This sprinkler is the only residential sprinkler approved by Factory Mutual.

The Quick Response Flush Horizontal Sidewall VK403 (Model H-4) Sprinkler is available with a polished chrome or white painted sprinkler body and a polished chrome, bright brass, white painted, or navajo painted escutcheon ring. The 3" OD escutcheon ring is a "push-on", "pull-off" style that allows up to 1/2" of horizontal adjustment. The VK403 (Model H-4) Sprinkler is UL and C-UL Listed and accepted for use by New York City Department of Buildings for standard areas of coverage per NFPA 13 (225 sq. ft.). 

The Microfast® line includes residential, quick-response, commercial, and extended coverage models. Microfast® sprinklers come in a variety of thread and orifice sizes and are available in chrome, natural or bright brass, black, white, or navajo with color-matched flat or special adjustable escutcheons. By employing special coatings, black (polyester or Teflon®) and white (polyester), Microfast® sprinklers not only provide decorative solutions, they offer an increase in corrosion resistance as well. Microfast® sprinklers employ a slender bulb element (135°F, 155°F, 175°F, 200°F, and 286°F - residential is 155°F and 175°F only) that is much smaller than other sprinkler actuating mechanisms, yet is as resistant to damage as any comparable sprinkler. This bulb makes the Microfast® several times more sensitive than standard sprinklers. Microfast® standard spray sprinklers are available in upright, pendent, sidewall models, and extended coverage Microfast® sprinklers are available in pendent and sidewall models

The Micromatic® sprinkler was designed with engineers, architects, owners, and installing contractors in mind. One of the smallest standard sprinklers made, the Micromatic® provides an extremely lean, attractive appearance. It is available in chrome, natural or bright brass, black, white, or navajo, and wax coated for corrosion resistance. It comes in upright, pendent, conventional, and sidewall styles in a variety of orifice sizes.

The Micromatic® is typically supplied with its time-proven glass bulb operating mechanism. When a solder link sprinkler is preferred, the Micromatic® is also available in chrome or natural brass finishes, upright, pendent, and sidewall styles, and a variety of orifice sizes.

The Micromatic®'s color-matched escutcheons include standard models and the adjustable recessed model, which allows sprinklers to be fitted prior to ceiling installation, saving time and money.

White/White and Black/Black Sprinkler. Equipment standards prohibit the field painting of sprinklers. However, by employing special coatings, Viking has developed white and navajo (polyester coated) and black (polyester or Teflon® coated) Micromatic® sprinklers, which can be combined with matching standard or recessed escutcheons.

Corrosion Resistant Sprinklers. Stainless Steel is available in upright or pendent models. Teflon® or polyester coatings are available in upright, pendent, conventional, horizontal and vertical sidewall. Also, wax-coated is available for severe corrosive environments.

In the past, it has been difficult to find a fire sprinkler that can meet the most demanding aesthetic requirements of discriminating architects and engineers—while still providing the fire sprinkler contractor the ultimate in installation flexibility. A trade-off always had to be made between a non-intrusive installation and a cost-effective installation.

Now, for the first time, there is a product that architects, engineers, and fire sprinkler contractors can use with confidence: the Mirage® Concealed Sprinkler from The Viking Corporation.

Mirage®—It's the first concealed sprinkler that's as easy on your eyes as it is to install.

Concealed sprinklers are typically specified to provide an almost invisible appearance to the sprinkler installation: this is where the Mirage® is true to its name. The Mirage® has the smallest cover plate (2-3/4") and the lowest profile (less than 5/32") of any concealed sprinkler available. These features, coupled with Mirage®'s unique push-on/thread-off cover plate design, make the Mirage® virtually undetectable in a finished ceiling.

The push-on/thread-off cover plate design also incorporates a positive latch feature that ensures a secure fit and the confidence that the cover plate will stay in place. No costly call-backs.

In addition, the push-on feature allows a flush fit in spite of the many variables involved in sprinkler installation. This eliminates the unsightly gaps between the ceiling and the cover plate found in most ordinary concealed sprinklers. The thread-off feature enables easy removal of the cover plate without damaging the sprinkler or the ceiling.

No other concealed sprinkler allows more vertical adjustability than the Mirage®—a full 1/2". This feature helps to minimize the number of drops that need recutting and results in a clean, professional installation. The Mirage® also eliminates guesswork for ceiling installers. A standard two-inch hole saw provides the specified ceiling hole size.

In addition, the Mirage® features a durable, protective cap that not only protects during shipping and installation, but also provides a convenient way to mark ceiling tiles for the center of the hole saw. And, to protect the assembly during installation, drop pins are fully retracted and enclosed.

For added convenience, Mirage® cover plates are packed separately, resulting in lower inventory costs and less chance of loss or damage at the job site.

In order to meet the demanding needs of a variety of applications, the Mirage® is available in both standard and quick response versions. And, to make Mirage® sprinklers even more appealing, they're available in nine standard finishes and over 500 custom colors, so there's one to go with any decor. Their durable baked enamel finish means they'll keep their good looks, year after year. All at a price that looks good, too.

The First Extended Coverage Concealed Sprinkler

The breakthrough technology of the Mirage® has convinced Underwriter's Laboratories to award Extended Coverage and Extended Coverage Quick Response listings to the Mirage® Concealed Sprinkler. The Mirage® is the first concealed sprinkler designed to meet the strict testing criteria for such usage.

This feature can allow a sprinkler contractor to significantly reduce the number of sprinklers, along with the associated pipe, fittings, hangers, and labor. These savings result in lower installed cost. Extended Coverage listings also enable the sprinkler contractor to meet center-of-tile requirements without sacrificing area of coverage.

In recent years there have been many technological advances, not the least of which is the development of quick response sprinklers. Viking has been at the forefront of these developments and has incorporated this technology throughout the product lines displayed on prior pages.

For those installations where the enhanced fire protection and life-safety benefits of quick response sprinklers are desired, Viking offers the most comprehensive selection of styles in the industry. Such installations may include hospitals, hotels, elderly care/housing facilities, high-rise occupancies and computer rooms, as well as many industrial applications. The increasing importance of quick response sprinklers in the design of fire sprinkler systems confirms the need for a dependable, complete source of supply.

Viking quick response sprinklers are available in a variety of styles including the Microfast®, Extra-Large Orifice, Horizon™ Flush, Horizon™ Mirage® Concealed, and Dry Sprinklers. Several of these styles are also available in quick response-extended coverage versions for light hazard occupancies. The benefits of quick response do not have to be sacrificed for economic or aesthetic considerations.

Viking has been proud to be a leader in the development of quick response-extended coverage concealed sprinklers as well as dry sprinklers, in upright, pendent, and horizontal sidewall orientations. For the best in quality and the widest selection of quick response sprinklers available, specify Viking.

Institutional Style Sprinklers

For safety and security, Viking offers the VK410 and VK412 (Model HQR-2) Institutional Style Quick Response Flush Pendent and Sidewall Sprinklers. They are for use with concealed piping in mental health occupancies, correctional facilities, or anywhere occupants may be likely to tamper with fire sprinklers. These small, flush, solder-link and lever spray sprinklers consist of the sprinkler body, a 3-1/4" diameter thread-on escutcheon plate, and a lockring for a permanent, tamper-resistant bond with the escutcheon. The tamper-resistant design includes a retaining flange that secures piping to prevent sprinkler movement away from ceilings or walls. The fusible element assembly features a low break-a-way weight. These sprinklers have a 5.6 U.S. K-factor and are UL and C-UL Listed and accepted for use by New York City Department of Buildings as Quick Response Flush Sprinklers. Both the pendent and sidewall styles provide standard coverage per NFPA 13 (225 sq. ft.), while the pendent style is also listed for extended coverage areas up to 16 ft. x 16 ft. spacing. 

Residential Sprinklers

Since the concept of sprinklers designed specifically for residential occupancies was first introduced in the mid 1970s, Viking has been at the heart of development of technology to meet this challenge. The result is a selection of residential sprinklers that combine attractive appearance with the distribution and response characteristics necessary to provide the desired life-safety benefits.

Viking residential sprinklers are available in a variety of styles including the Microfast®, and the Horizon™ Flush Residential VK420 (Model H-3) Sprinkler.

The Microfast® Residential Sprinkler comes in either pendent or horizontal sidewall styles and can be provided in brass, bright brass, polished chrome, white, or navajo finishes. When combined with Viking's Model F-1 Adjustable Escutcheon, it provides a low-profile, decorative installation. The Microfast® Residential Horizontal Sidewall Sprinkler is extremely versatile and can be installed as much as twelve inches below the ceiling and cover areas as large as 18 feet by 18 feet, when the appropriate water supply is provided.

The Microfast® Residential Pendent VK430 (Model M-4) Sprinkler provides some of the best flow characteristics in the industry, along with the extended coverage and the enhanced aesthetics of the traditional Viking Model E-1 Recessed Escutcheon.

The revolutionary Microfast® VK440 (Model M-4) with a K factor of 4.2, and the VK442 (Model M-5) Residential Horizontal Sidewall Sprinkler with a K factor of 5.5 are the first residential sidewall sprinklers specifically tested and listed for use in areas with sloped ceilings. They can be installed a minimum of 6" and a maximum of 10" below the ceiling. They are listed for use with Viking's standard Model E-1 Recessed Escutcheon, which provides approximately 5/8" of adjustment.

The Viking Horizon™ Residential VK420 (Model H-3) Sprinkler with a K factor of 3.8 combines the ultimate in aesthetics and performance as evidenced by its low flows. This sprinkler is also available in many finishes, including bright brass, polished chrome, white, and navajo. This sprinkler also has the distinction of being the first residential pendent sprinkler listed for use in areas with sloped ceilings.

Sprinklers for High Piled Storage Occupancies For traditional sprinkler systems in occupancies with rack storage, Viking offers the full line of frame style (Model M) sprinklers along with accessories like the watershield/sprinkler guard. For those structures where a designer wishes to minimize or eliminate the use of intermediate level sprinklers, Viking offers a number of choices.

Viking pioneered the development of sprinklers designed specifically for storage occupancies decades ago with the introduction of the High Challenge® Sprinkler. Viking's ELO Standard Response Upright VK530 (Model M) Sprinkler and ELO Quick Response Upright VK531 (Model M) have been specifically tested and listed (Standard Response VK530 by UL, cUL and FM; Quick Response VK531 by UL) for use in high-piled storage occupancies. The large K-Factor of these sprinklers allows appropriate densities to be delivered at lower starting pressures.

Viking ESFR Sprinklers are available for use in the protection of ordinary storage occupancies. However, they are designed primarily for severe-challenge conditions where it is necessary to penetrate the fire plume and wet the burning fuel surface directly, while cooling the atmosphere early in the development of high-challenge fires. Viking ESFR Sprinklers feature a fast-response fusible link and a special deflector to create large, high-momentum water droplets to suppress fire quickly, helping to minimize fire and water damage. The VK520 (Model A-4) ESFR Upright Sprinkler has a U.S. K-Factor of 14.0, and is FM Approved for protection of certain types of storage up to 30 feet in buildings with ceilings up to 35 feet. These sprinklers can be installed on top of piping up to three inches in diameter without a sprig and may be installed above certain types of obstructed construction. The VK500 (Model S-1) ESFR Pendent Sprinkler has a U.S. K-Factor of 14.0, and is FM Approved for specific types of storage up to 40 feet high with ceilings up to 45 feet high.