RA-10 Low Flow Adjustable Concealed Sprinkler - GL3547

Automatic Sprinklers Model GL3547 Low Flow Adustable Concealed Pendent

Description and Operation

The Globe Model GL3547 Low Flow Residential Adjustable Concealed Pendent Sprinkler is a low profile yet durable design that utilizes a 3mm frangible glass ampule as the thermosensitive element. It features both economy, aesthetics and low water flow. The combination of the 3mm frangible glass ampule and specially designed deflector make the Model GL3547 Low Flow Residential Adjustable Concealed Pendent Sprinkler the ultimate in life safety and fire control. The Model GL3547 is available with 1/2" of adjustment and a deeper profile cover plate assembly. It has met the strict requirements of Underwriters Laboratories Inc. as described in UL Standard, 1626, for Residential Sprinklers for Fire Protection Service, 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.

Globe's Residential Adjustable Concealed Pendent Sprinkler consists of our pendent residential type sprinkler concealed from view by a dome shaped ceiling plate. All that is seen at the ceiling is the 3 5/16" diameter ceiling plate color finished to match the specifier's exact requirements. 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 residential pendent spray sprinkler. At the glass ampule's rated temperature, the sprinkler opens discharging water onto the floor in its required and approved distribution pattern.

Technical Data

Temperature Rating - 155°F (68°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.
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	155°F	68°C	Red	100°F	38°C

Specifications and Approvals

Sin Model	K Factor	Thread Size	Length	Finishes	155°F (68°C) Sprinkler w/ 135°F (57°C) Plate	cULus
GL3547	3.5 (49 metric)	1/2" NPT	2 1/2" (6.4 cm)	Bright Chrome White Painted ¹Satin Chrome ¹Bright Brass ¹Other Painted Finishes	•	•

NOTE:

Metric conversions are approximate
¹Finishes available on special order.

Cross Sections

Installation Data

Concealed Pendent Sprinkler

Maximum Area of Coverage	Minimum Water Discharge & Pressures Needed*
Maximum Area of Coverage	Single Sprinkler	Two Sprinklers
12' x 12'	9 G.P.M. - 7 P.S.I.	9 G.P.M. - 7 P.S.I. (EACH)
14' x 14'	12 G.P.M. - 11.7 P.S.I.	12 G.P.M. - 11.7 P.S.I. (EACH)
16' x 16'	12 G.P.M. - 11.7 P.S.I.	12 G.P.M. - 11.7 P.S.I. (EACH)
18' x 18'	16 G.P.M. - 20.9 P.S.I.	13 G.P.M. - 13.8 P.S.I. (EACH)
20' x 20'	16 G.P.M. - 20.9 P.S.I.	16 G.P.M. - 20.9 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 327119

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: GL3547 Last Revised: October 2003 Revision: 2