RA-3 Low Flow Pendent Sprinkler - GL2810

Automatic Sprinklers Model GL2810 Low Flow Pendent Recessed Pendent

Description and Operation

The Globe Model GL2810 Low Flow Residential Sprinkler is a low profile yet durable design which utilizes a 3mm frangible glass ampule as the thermosensitive element. It features both economy and aesthetics.

The combination of the 3mm frangible glass ampule and innovative deflector design make the Model GL2810 Low Flow Residential Sprinkler the ultimate in life safety and fire control. The Globe Pendent and Recessed Pendent Model GL2810 Low Flow Residential Sprinklers have met the strict requirements of Underwriters Laboratories Inc. as described in the UL Standard for Residential Sprinklers for Fire Protection Service, UL 1626, and should be used accordingly. These sprinklers should also be installed in accordance with the appropriate NFPA Standard 13, 13D or 13R and under the direction of the approving authorities having jurisdiction.

The heart of Globe's Model GL2810 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 Rating - 155°F (68°C), 175°F (79°C)
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
Escutcheon Assembly - steel

Sprinkler Temperature Rating/Classification and Color Coding

Classification	Available Sprinkler Temperatures		Bulb Color	N.F.P.A. Maximum Ceiling Temperature
Ordinary	155°F	68°C	Red	100°F	38°C
Intermediate	175°F	79°C	Yellow	150°F	66°C

Specifications and Approvals

Sin Model	K Factor	Thread Size	Length	Finishes	155°F 68°C	175°F 79°C	cULus	NYC-DOB MEA 101-92-E
GL2810	2.8 (40 metric)	1/2" NPT	2 1/4" (5.7 cm)	Factory Bronze Satin Chrome¹ Bright Chrome White Polyester² Black Polyester² Lead Coated¹	•	•	•	•

Note:

Metric conversions are approximate.
¹Finishes available on special order.
²Available as U.L. and C-U.L. listed corrosion resistant when specified on order.

Cross Sections

Installation Data

Pendent Sprinkler

Model	Maximum Area of Coverage	Minimum Water Discharge & Pressures Needed*
Model	Maximum Area of Coverage	Single Sprinkler	Two Sprinklers
GL2810	12' x 12'	10 G.P.M. - 12.7 P.S.I.	8 G.P.M. - 8.2 P.S.I. (EACH)
	14' x 14'	10 G.P.M. - 12.7 P.S.I.	8 G.P.M. - 8.2 P.S.I. (EACH)
	16' x 16'	11 G.P.M. - 15.4 P.S.I.	11 G.P.M. - 15.4 P.S.I. (EACH)
	18' x 18'	13 G.P.M. - 21.6 P.S.I.	13 G.P.M. - 21.6 P.S.I. (EACH)
	20' x 20'	16 G.P.M. - 32.7 P.S.I.	16 G.P.M. - 32.7 P.S.I. (EACH)

*When these sprinklers are used in NFPA 13 systems, a 0.1 design density minimum shall be utilized.

Ordering Information

When ordering please specify the following.

Quantity
Model Number
Style
Orifice
Temperature
Finishes desired
Quantity - Wrenches - P/N 325390
Quantity - Recessed Wrenches - P/N 325391
Quantity - Protective Caps - P/N 327109-CAP (Friction Fit Recessed)

Product Related Documents

Residential Sprinkler Installation Guide

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: GL2810 Last Revised: October 2003 Revision: 2