A-33 Adjustable Concealed (Dome) Pendent Sprinkler

Automatic Sprinklers GL Series Adjustable Concealed Pendent

Description and Operation

The Globe Quick Response GL Series Adjustable Concealed Pendent Sprinkler is a low profile, aesthetically pleasing design. It provides sprinkler operation approximately six times faster than ordinary sprinklers and can be installed wherever standard concealed spray sprinklers are specified when allowed by the applicable standards. It offers the additional feature of greatly increased safety to life and should be used advisedly and under the direction of approving authorities having jurisdiction. The Sprinkler is available with 1/2" of adjustment and a deeper profile cover plate assembly. All that is seen at the ceiling is a 3 5/ 16" diameter ceiling plate color finished to match the specifier's exact requirements. The GL Series Adjustable Concealed Sprinkler may be virtually invisible as it does not interrupt the "smooth flow" of the ceiling. Globe's Adjustable Concealed Sprinkler utilizes its 3mm frangible glass ampule type sprinkler which is located above the ceiling and concealed from view by the ceiling plate. The ceiling plate is soldered to the sprinkler's special upper support assembly in three places. Upon the application of sufficient heat, the plate falls to the floor exposing the quick response pendent spray sprinkler. At the ampule's rated temperature, the sprinkler opens discharging water onto the floor in its required and approved distribution 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
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 - copper

Spring - nickel alloy

Seal - teflon

Bulb - glass with alcohol based solution, 3mm size

Cover Plate - brass

Upper 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

Specifications

Nominal 'K' Factor	Thread Size	Length	Finishes
2.8 (39 metric)	1/2" NPT	2 1/2" (6.4 cm)	Bright Chrome White Painted Satin Chrome¹ Bright Brass¹ Other Painted Finishes¹
4.2 (59 metric)
5.6 (80 metric)
8.1 (116 metric)	3/4" NPT

NOTE:

Metric conversions are approximate.

¹Finishes available on special order. Painted plates other than white require customer to furnish paint.

Approvals

Style	Sin Model	K Factor	135°F (57°C) with plate 135°F (57°C)	155°F (68°C) with plate 135°F (57°C)	175°F (79°C) with plate 155°F (68°C)	200°F (93°C) with plate 155°F (68°C)	cULus
Concealed Pendent	GL2845	2.8	•	•	•	•	•
	GL4245	4.2	•	•	•	•	•
	GL5645	5.6*	•	•	•	•	•
	GL8145	8.1*	•	•	•	•	•

*Listed for all hazards.

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 Sizes

Temperature

Finishes desired

Quantity - Concealed Wrenches - P/N 325391

Quantity - Protective Caps - P/N 327119

Product Related Documents

Discharge Tables & Spray Patterns

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: GL2845 Last Revised: July 2005 Revision: 3