Dry Sprinklers » Dry Type Concealed Pendent
A-92 Dry Type Adjustable (Dome) Concealed Pendent Sprinkler
GL Series Dry Type Adjustable Concealed Pendent
Description and Operation
The Globe GL Series Dry Type Adjustable Concealed Pendent Sprinkler is designed for use in special applications such as freezing environments and conditions where sediment or foreign materials might accumulate in ordinary drop nipples. It offers the ultimate in low profile, aesthetically pleasing appearance. The sprinkler is available with 1/2" of adjustment and a deeper profile ceiling plate, 3 5/16" diameter, color finished to match the specifier's exact requirements. Globe's Dry Adjustable Concealed Sprinkler utilizes a frangible 5mm glass bulb type sprinkler which is located above the ceiling and concealed from view by the ceiling plate. The plate is soldered to the sprinkler special upper support assembly in three places. Upon the application of sufficient heat, the plate falls to the floor exposing the pendent spray sprinkler. At the ampule's rated temperature, the sprinkler opens releasing the bulb seat, causing the inner tube assembly to move; allowing the spring assembly to pivot alongside the inner tube. At this time, water flows through the sprinkler and is distributed by the deflector in an approved discharge pattern.
A special spring is attached to the pendent deflector that serves to provide a constant tension against the ceiling plate. This feature virtually ensures freedom from environmental vibration problems.
The heart of Globe's GL Series sprinkler proven actuation assembly is a hermetically sealed frangible glass ampule that contains a precisely measured amount of fluid. When heat is absorbed, the liquid within the bulb expands increasing the internal pressure. At the prescribed temperature the internal pressure within the ampule exceeds the strength of the glass cdischarge which is distributed in an approved pattern.
Technical Data
- Temperature Ratings -
135°F (57°C) Sprinkler, 135°F (57°C) Cover Plate
155°F (68°C) Sprinkler, 135°F (57°C) Cover Plate
155°F (68°C) Sprinkler, 155°F (68°C) Cover Plate
175°F (79°C) Sprinkler, 155°F (68°C) Cover Plate
200°F (93°C) Sprinkler, 155°F (68°C) Cover Plate - Water Working Pressure Rating - 175 psi (12 Bars)
- Factory tested hydrostatically to 500 psi (34 Bars)
- Maximum low temperature glass bulb rating is
-67°F (-55°C) - Frame - bronze
- Deflector - brass
- Screw - brass
- Bulb seat - brass
- Spring Assembly - teflon coated nickel alloy and brass
- Bulb - glass with glycerin solution, 5mm size
- Orifice insert - brass
- 3/4" or 1" NPT
- Stabilizer bar - bronze
- Outer tube - galvanized steel pipe
- Inner tube - stainless steel
Sprinkler Temperature Rating/Classification and Color Coding
| Classification | Available Sprinkler Temperatures | Bulb Color | N.F.P.A. Maximum Ceiling Temperature | ||
|---|---|---|---|---|---|
| Ordinary | 135°F/155°F | 57°C/68°C | Orange/Red | 100°F | 38°C |
| Intermediate | 175°F/200°F | 79°C/93°C | Yellow/Green | 150°F | 66°C |
Specifications
| Nominal 'K' Factor | Thread Size | Length* | Finishes | |
|---|---|---|---|---|
| 5.6 | (80 metric) | 3/4" or 1" NPT | Variable to 48" |
Bright Chrome White Polyester 1Satin Chrome 1Bright Brass 1Other Painted Finishes |
| 8.1 | (116 metric) | 1" NPT | ||
Note:
- Metric conversions are approximate.
- *cULus listed for up to a 48" "A" dimension.
- 1Finishes available on special order. Painted plates other than white require customer to furnish paint. Contact Globe for paint specification.
Approvals
| Style | Sin Model | K Factor | Thread Size | 135°F (57°C) w/plate 135°F (57°C) | 155°F (68°C) w/plate 135°F (68°C) | 155°F (68°C) w/plate 155°F (68°C) | 175°F (79°C) w/plate 155°F (68°C) | 200°F (93°C) w/plate 155°F (68°C) | *cULus |
|---|---|---|---|---|---|---|---|---|---|
| Concealed Pendent |
GL5677 | 5.6 | 1" NPT | • | • | • | • | • | • |
| GL5678 | 5.6 | 3/4" NPT | • | • | • | • | • | • | |
| GL8177 | 8.1 | 1" NPT | • | • | • | • | • | • |
Note: *Listed for all hazards
Cross Section
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Important Installation Data
Globe GL Series Dry Concealed sprinklers should be installed in accordance with the requirements set forth in NFPA 13. These sprinklers are to be installed using a pipe wrench applied to the outer tube. When this is not possible, the proper sprinkler head wrench may be used with extreme care for lengths up to approximately 18". Excessive force may distort the frame thus destroying the unit.
When installed in a wet system extending into a freezing area, see chart on Dry Caution Sheet for minimum exposed barrel length to prevent ice plugs. Please refer to our Dry Caution Sheet for further important installation data.
Ordering Information
When ordering please specify the following.
- Quantity
- Model Number
- Style
- Orifice
- Temperature
- Finishes desired
- Quantity - Concealed Wrenches - P/N 337014
- Quantity - Protective Caps - P/N 327119
- "A" Dimension - Distance from face of fitting to the
finished ceiling line regardless of escutcheon used.
Product Related Documents
Related Products
Globe Product Warranty
Globe agrees to repair or replace any of its own manufactured products found to be defective in material or workmanship for a period of one year from date of shipment.
For specific details of our warranty please refer to Price List Terms and Conditions of Sale (Our Price List).
Bulletin: GL5677 Last Revised: August 2010 Revision: 9