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A-68 High Pressure Recessed Sprinkler
High Pressure Model GL Series Recessed Pendent
Description and Operation
The Globe High Pressure Model GL Series Sprinkler is a low profile yet durable design which utilizes a frangible glass ampule as the thermosensitive element. While the sprinkler provides an aesthetically pleasing appearance, it offers greatly increased safety to life and the ability to be used in areas where flowing and static pressure do not exceed 300 psi. This sprinkler series is available in various orifices, temperature ratings and finishes to meet varying design requirements.
The heart of Globe’s Model GL Series sprinkler proven actuating 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 causing the glass to shatter. This results in water discharge which is distributed in an approved pattern.
Technical Data
- Temperature Ratings - 135°F (57°C),
155°F (68°C), 175°F (79°C),
200°F (93°C), 286°F (141°C) - Water Working Pressure Rating - 300 psi (21 Bars)
- Factory tested hydrostatically to 850 psi (59 Bars)
- Maximum low temperature glass bulb rating is
-67°F (-55°C) - Frame - bronze
- Deflector - brass
- Screw - brass
- Bulb seat - copper
- Spring - nickel alloy
- Seal - teflon
- Bulb - glass with glycerin solution, 5mm size
- Escutcheon Assembly - 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 |
| High | 286°F | 141°C | Blue | 225 °F | 107°C |
Specifications
| Orifice Size | Nominal 'K' Factor | Thread Size | Length | Finishes | ||
|---|---|---|---|---|---|---|
| 1/2" | (15 mm) | 5.6 | (80 metric) | 1/2" NPT | 2 1/4" (5.7 cm) | Factory Bronze Bright Chrome White Polyester1 Black Polyester1 Lead Coated2 |
| 17/32" | (20 mm) | 7.8 | (111 metric) | 1/2" NPT | *2 1/4" (5.7 cm) | |
| 17/32" | (20 mm) | 8.1 | (116 metric) | 3/4" NPT | 2 7/16" (6.2 cm) | |
Note:
- Metric conversions are approximate.
- *Excluding pintle.
- 1Available as U.L. and C-U.L. listed corrosion resistant when specified on order.
- 2 Finishes available on special order.
Approvals
| Style | Sin Model | Orifice Size | 135° F 57° C | 155° F 68° C | 175° F 79° C | 200° F 93° C | 286°F 141°C | †cULus |
|---|---|---|---|---|---|---|---|---|
| Pendent Recessed |
GL5652 | 5.6 | • | • | • | • | • | • |
| GL8152 | 7.8* | • | • | • | • | • | • | |
| GL8157 | 8.1 | • | • | • | • | • | • |
Note:
- † 1/2" Orifice and 17/32" orifice listed for all hazards.
- *17/32" X 1/2" NPT.
Cross Sections
Click image above for a detailed view of this product.
Ordering Information
When ordering please specify the following.
- Quantity
- Model Number
- Style
- Orifice
- Thread Size
- Temperature
- Finishes desired
- Quantity - Recessed Wrenches - P/N 325391, Rev. F (1/2"); P/N 325401, Rev. D (L.O.)
- Quantity - Protective Caps - P/N 327109-CAP (Friction Fit Recessed)
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: GL300PSIR Last Revised: September 2004 Revision: 2