Viking M - User Manual

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MODEL M FRAME STYLE

SPRAY NOZZLES

TECHNICAL DATA

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

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

Form No. F_011594 21.08.04 Rev 21.2

Page 1 of 5

1. DESCRIPTION

Viking Frame Style Spray Nozzles are small, directional spray

nozzles for use on water spray systems. They are thermosensitive

glass bulb style nozzles, however they may be ordered OPEN

(glass bulb and pip cap assembly removed) for use on deluge

systems.

These Frame Style Spray Nozzles are available in various

finishes, temperature ratings, orifice sizes, and spray pattern

discharge angles to meet design requirements. When spraying,

the nozzles discharge a cone-shaped spray pattern. The deflector

determines the included angle of spray pattern discharge. A

special ring provides uniform distribution throughout the spray

pattern.

Other features include the small frame, which allows proper nozzle

positioning even in congested areas, and the nominal 3 mm glass

bulb contained entirely inside the frame for protection from most

mechanical damage. The glass bulb operating elements are

resistant to more corrosive atmospheres than metal elements.

The special PTFE coating has been investigated for installation in

corrosive atmospheres and is cULus listed as corrosion resistant

as indicated in the Approval Chart.

2. LISTINGS AND APPROVALS

cULus Listed: Category VGYZ

NYC Approved: MEA 89-92-E, Volume 29

NOTE: International approval certificates are available upon request. Refer to the Approval Chart and Design Criteria for cULus

listing requirements that must be followed.

3. TECHNICAL DATA

Specications:

Minimum Operating Pressure: 7 PSI (0.5 bar)

Rated to 175 PSI (12 bar) water working pressure.

Factory tested hydrostatically to 500 PSI (34.5 bar)

Frame Style Spray Nozzles are available in various orifice sizes. Refer to the Approval Chart for more information.

The spray nozzle deflector is identified with the U.S. K-Factor, spray angle, and temperature rating.

Thread size: 1/2” (15 mm) NPT

Nominal K-Factors: Refer to the Approval Chart

Glass-bulb fluid temperature rated to -65 °F (-55 °C)

Overall Length: Refer to the Approval Chart

Spray Nozzle Material Standards:

Frame Casting: Brass UNS-C84400

Deflector: Copper UNS-C19500

Ring: Phosphor Bronze UNS-C51000

Bulb: Glass, nominal 3 mm diameter

Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape

Screw: Brass UNS-C36000

Bushing (Small Orifice Nozzles): Brass UNS-C36000

Pip Cap: Brass UNS-C31600

For PTFE Coated Nozzles: Belleville Spring-Exposed, Screw-Nickel Plated (painted black for appearance only), Pip Cap-PTFE Coated

Ordering Information: (Also refer to the current Viking price list.)

Replaces Form No. F_011594 Rev 21.1

(Reinstated bushed orifice footnote)

Nozzles are shown with deflectors in the upright position for clarity.

May be installed in any position to meet design requirements.

60° 90° 120° 150°

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Summary

Technical Data and Specifications

Key Specifications

Details minimum operating pressure, pressure ratings, factory test pressure, and thread size for spray nozzles.

Material Standards

Lists the materials used for frame casting, deflector, ring, bulb, sealing assembly, screws, and pip caps.

Approval Chart

Provides a comprehensive chart of base part numbers, orifice sizes, K-factors, lengths, and cULus/NYC approvals.

Installation Guidelines

Design Criteria and Installation

Covers cULus listing requirements, installation standards, handling, and specific procedures for automatic and open nozzles.

Inspections, Tests, and Maintenance

Care and Handling of Sprinklers

General Handling and Storage

Guidelines for storing, transporting, and handling sprinklers to prevent damage and maintain integrity.

Sprinkler Installation Precautions

Important steps and warnings for installing sprinklers correctly using proper tools and methods.

Maximum Torque Specifications

Specifies the maximum allowable torque for different thread sizes to prevent over-tightening.

Protective Sprinkler Shields and Caps

Shield and Cap Removal

Instructions on when and how to remove protective shields and caps from sprinklers before system service.

Regulatory and Health Warnings

Summary

Technical Data and Specifications

Key Specifications

Details minimum operating pressure, pressure ratings, factory test pressure, and thread size for spray nozzles.

Material Standards

Lists the materials used for frame casting, deflector, ring, bulb, sealing assembly, screws, and pip caps.

Approval Chart

Provides a comprehensive chart of base part numbers, orifice sizes, K-factors, lengths, and cULus/NYC approvals.

Installation Guidelines

Design Criteria and Installation

Covers cULus listing requirements, installation standards, handling, and specific procedures for automatic and open nozzles.

Inspections, Tests, and Maintenance

Care and Handling of Sprinklers

General Handling and Storage

Guidelines for storing, transporting, and handling sprinklers to prevent damage and maintain integrity.

Sprinkler Installation Precautions

Important steps and warnings for installing sprinklers correctly using proper tools and methods.

Maximum Torque Specifications

Specifies the maximum allowable torque for different thread sizes to prevent over-tightening.

Protective Sprinkler Shields and Caps

Shield and Cap Removal

Instructions on when and how to remove protective shields and caps from sprinklers before system service.

Regulatory and Health Warnings

The Viking Frame Style Spray Nozzles are small, directional spray nozzles designed for use in water spray systems. These nozzles are thermosensitive, featuring a glass bulb style, but can also be ordered as "OPEN" (with the glass bulb and pip cap assembly removed) for use in deluge systems.

Function Description:

During fire conditions, the heat-sensitive liquid within the glass bulb expands, causing the bulb to shatter. This action releases the pip cap and sealing spring assembly, allowing water to flow through the orifice. The water then strikes a special deflector, which directs a specific cone-shaped spray pattern towards the protected surface. The deflector determines the included angle of the spray pattern discharge, and a special ring ensures uniform distribution throughout the spray pattern.

Important Technical Specifications:

Minimum Operating Pressure: 7 PSI (0.5 bar)
Rated Water Working Pressure: Up to 175 PSI (12 bar)
Hydrostatic Test Pressure: Factory tested to 500 PSI (34.5 bar)
Thread Size: 1/2" (15 mm) NPT
Glass-bulb Fluid Temperature Rating: -65 °F (-55 °C)
Orifice Sizes: Available in various sizes, including 1/2" (13 mm), 7/16", 3/8" (10 mm), 5/16", and 1/4". Nominal K-Factors vary by orifice size (e.g., 5.6 for 1/2" orifice, 4.2 for 7/16", 2.8 for 3/8", 1.9 for 5/16", and 1.4 for 1/4").
Temperature Ratings: Available in Ordinary (135 °F/57 °C, 155 °F/68 °C), Intermediate (175 °F/79 °C, 200 °F/93 °C), and High (286 °F/141 °C) classifications.
Maximum Ambient Ceiling Temperatures: 100 °F (38 °C) for Ordinary, 150 °F (65 °C) for Intermediate, and 225 °F (107 °C) for High temperature ratings.
Materials:
- Frame Casting: Brass UNS-C84400
- Deflector: Copper UNS-C19500
- Ring: Phosphor Bronze UNS-C51000
- Bulb: Glass, nominal 3 mm diameter
- Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
- Screw: Brass UNS-C36000
- Bushing (Small Orifice Nozzles): Brass UNS-C36000
- Pip Cap: Brass UNS-C31600
- For PTFE Coated Nozzles: Belleville Spring-Exposed, Screw-Nickel Plated (painted black for appearance only), Pip Cap-PTFE Coated.
Finishes: Brass and Black PTFE. Black PTFE is also available as a corrosion-resistant coating.
Overall Length: Varies by model, ranging from 2-1/2" (63.5 mm) to 2-11/16" (68.3 mm).

Usage Features:

Small Frame: Allows for proper nozzle positioning even in congested areas.
Protected Glass Bulb: The nominal 3 mm glass bulb is contained entirely inside the frame, offering protection from most mechanical damage.
Corrosion Resistance: Glass bulb operating elements are resistant to more corrosive atmospheres than metal elements. The special PTFE coating is investigated for corrosive atmospheres and is cULus listed as corrosion resistant.
Directional Spray Patterns: Available with various spray pattern discharge angles (60°, 90°, 120°, 150°) to meet specific design requirements.
Installation Flexibility: May be installed in any position to meet design requirements.
Approvals: cULus Listed (Category VGYZ) and NYC Approved (MEA 89-92-E, Volume 29). International approval certificates are available upon request, with specific cULus listing requirements to be followed.
Ordering: Nozzles are ordered by selecting the appropriate part number from the Approval Chart, adding suffixes for the desired finish (e.g., 'A' for Brass, 'N' for Black PTFE) and temperature rating (e.g., 'A' for 135°F/57°C, 'B' for 155°F/68°C, 'D' for 175°F/79°C, 'E' for 200°F/93°C, 'G' for 286°F/141°C, 'Z' for OPEN).
Wrenches: Standard wrench (Part No. 21475MB) and a specific wrench for coated spray nozzles (Part No. 13577W/B, requiring a 1½" ratchet) are available.
Sprinkler Cabinets: Six-head (Part No. 01724A) and twelve-head (Part No. 01725A) capacity cabinets are available.

Maintenance Features:

Care and Handling: Sprinklers are fragile and must be handled with care. They should be stored in a cool, dry place in their original shipping containers, protected during storage, transport, handling, and after installation. Metal parts should not contact operating elements.
Installation Precautions: Do not use the deflector or operating element to start or thread the sprinkler into a fitting. Only the designated sprinkler head wrench should be used. Sprinklers should be installed after piping is in place to prevent mechanical damage. Avoid impacts to sprinklers or nearby fittings. Do not attempt to remove drywall, paint, or other foreign materials from sprinklers.
Over-tightening: Care must be taken not to over-tighten the sprinkler or damage its operating parts. Maximum torque specifications are provided: 14 ft-lbs (19.0 N-m) for 1/2" NPT, 20 ft-lbs (27.1 N-m) for 3/4" NPT, and 30 ft-lbs (40.7 N-m) for 1" NPT.
Testing: For automatic (closed) systems, the entire fixed pipe system must be tested according to installation standards. For open systems, hydrostatic testing must be completed prior to nozzle installation, with plugs used in place of nozzles during testing.
Inspections: Sprinklers and spray nozzles must be inspected regularly for corrosion, mechanical damage, obstructions, and paint. Frequency of inspections may vary based on corrosive atmospheres, water supplies, and activity around the device.
Replacement: Sprinklers that have been filed, painted, caulked, mechanically damaged, or show signs of corrosion must be replaced immediately. Sprinklers that have operated cannot be reassembled or reused. Only new sprinklers with identical performance characteristics should be used for replacement.
Obstruction Removal: Nothing should obstruct the discharge pattern; obstructions must be removed, or additional sprinklers installed.
Corrosion-Resistant Coatings: When installing corrosion-resistant nozzles, care must be taken not to damage the coating. For wax-coated sprinklers, wax is available in bar form for touch-up after installation, and the coating must be repaired to maintain corrosion resistance. Wax-coated sprinklers require a special wrench for installation.
Protective Shields/Caps: Many sprinklers come with plastic protective caps or shields. These must be removed before placing the system in service. They should be removed carefully without tools, by pulling apart shields or turning caps slightly.
Damaged Sprinklers: Never install sprinklers that have been dropped, damaged, or exposed to temperatures exceeding the maximum ambient temperature allowed. Any glass-bulb sprinkler with a cracked bulb, loss of liquid, or damaged fusible element must be destroyed immediately.
Regulatory Compliance: Installation and maintenance must comply with the latest Viking technical data, NFPA standards (e.g., NFPA 13, NFPA 25), FM Global, LPCB, APSAD, VdS, and governmental codes.
Warranty: Details of warranty are available in Viking's current list price schedule or by contacting Viking directly.