Reliable G Series Manual

Model G Conventional

Model G Series Conventional Sprinklers

Sprinkler

Model

K-Factor gpm/psi1/2

(lpm/bar1/2)Orientation Response Listings &

Approvals

Max. Working

Pressure psi (bar)

Sprinkler

Identication

Number (SIN)

4.10 (59.1)

Conventional SR

Planiere Assemblee

175 psi (12 bar)

R1074

5.62 (81.0) LPCB, CE, Planiere

Assemblee R1075

8.2 (118.2) LPCB, CE, Planiere

Assemblee R1077

Table A

Note: Not all versions of the sprinkler are shown.

Features

• Standard response

• Conventional deflector

• Robust solder capsule thermal element

• Available in a wide variety of nishes

Product Description

Conventional (or “old-style” sprinklers) direct approximately 40%

of their water discharge up against the ceiling and the remainder

downward to the floor, and may be used in either the upright or

pendent position.

Reliable Model G Conventional Sprinklers are standard-response

re sprinklers utilizing a solder capsule/strut and lever thermal

element.

These sprinklers are available in 4.10 (59.1 metric), 5.62 (81.0

metric), and 8.2 (118.2 metric) K factor.

When used in the pendent position, sprinklers may be installed

exposed or surface mounted using escutcheons such as the

Reliable Models B, C, or HB (reference Technical Bulletin 204).

Table A provides a summary of the approvals and availability of

specic Model G Series Conventional sprinkler congurations.

Additional technical information for each sprinkler model is

provided on the following pages.

www.reliablesprinkler.com

K Factor 4.10 (59.1), 5.62 (81.0), and 8.2 (118.2)

Model G

Conventional Sprinklers

Bulletin 079 May 2021

Model G Conventional Sprinkler SIN R1074

Technical Specications

Style: Upright or Pendent

Threads: 3/8” BPST

Nominal K-Factor: 4.10 (59.1 metric)

Max. Working Pressure: 175 psi (12 bar)

Material Specications

Thermal Sensor: Solder Capsule

Sprinkler Frame: Leaded Red Brass Alloy

Cap: Brass Alloy with PTFE

Load Screw: Brass CDA Alloy

Deflector: Brass CDA Alloy

Sprinkler Finishes

(See Table B)

Sensitivity

Standard Response

Temperature Ratings

135°F (57°C)

165°F (74°C)

212°F (100°C)

286°F (141°C)

Sprinkler Wrench

Model W2

Listings and Approvals

Pleniere Assemblee

Model G (3/8”) Conventional Sprinkler Components and Dimensions Figure 1

Bulletin 079

May 2021

Page 2 of 6

www.reliablesprinkler.com

Model G Conventional Sprinkler SIN R1075

Technical Specications

Style: Upright or Pendent

Threads: 1/2” BPST

Nominal K-Factor: 5.62 (81.0 metric)

Max. Working Pressure: 175 psi (12 bar)

Material Specications

Thermal Sensor: Solder Capsule

Sprinkler Frame: Leaded Red Brass Alloy

Cap: Brass Alloy with PTFE

Load Screw: Brass CDA Alloy

Deflector: Brass CDA Alloy

Sprinkler Finishes

(See Table B)

Sensitivity

Quick Response

Temperature Ratings

135°F (57°C)

165°F (74°C)

212°F (100°C)

286°F (141°C)

Sprinkler Wrenches

Model W2

Listings and Approvals

LPCB

Pleniere Assemblee

CE (1438-CPR-0052)

Model G (1/2”) Conventional Sprinkler Components and Dimensions Figure 2

Bulletin 079

May 2021

Page 3 of 6

www.reliablesprinkler.com

Model G Conventional Sprinkler SIN R1077

Technical Specications

Style: Upright or Pendent

Threads: 3/4” BPST

Nominal K-Factor: 8.2 (118.2 metric)

Max. Working Pressure: 175 psi (12 bar)

Material Specications

Thermal Sensor: Solder Capsule

Sprinkler Frame: Leaded Red Brass Alloy

Cap: Brass Alloy with PTFE

Load Screw: Brass CDA Alloy

Deflector: Brass CDA Alloy

Sprinkler Finishes

(See Table B)

Sensitivity

Standard Response

Temperature Ratings

135°F (57°C)

165°F (74°C)

212°F (100°C)

286°F (141°C)

Sprinkler Wrenches

Model W2

Listings and Approvals

LPCB

Pleniere Assemblee

CE (1438-CPR-0052)

Model G (3/4”) Conventional Sprinkler Components and Dimensions Figure 3

Bulletin 079

May 2021

Page 4 of 6

www.reliablesprinkler.com

Installation

Model G series sprinklers must be installed with the Reliable Model

W2 sprinkler installation wrench as identied in this Bulletin. Any

other wrench may damage the sprinkler. The Model W2 wrench

has two sets of jaws. Use the smallest set of jaws that t on the

wrench flats of the sprinkler. A leak tight sprinkler joint can be

obtained with an appropriate thread sealant and a torque of 6 to 12

lb-ft (8 to 16 N.m) for 3/8” threads, 8 to 18 lb-ft (11 to 24 N.m) for

1/2” threads, and 14 to 20 lb-ft (19 to 27 N.m) for 3/4” threads. Do

not tighten sprinklers over the maximum recommended installation

torque. Exceeding the maximum recommended installation torque

may cause leakage or impairment of the sprinkler.

Maintenance

Reliable Model G series sprinklers should be inspected and the

sprinkler system maintained in accordance with NFPA 25, as well

as the requirements of any Authorities Having Jurisdiction.

Prior to installation, sprinklers should remain in the original

cartons and packaging until used. This will minimize the potential

for damage to sprinklers that could cause improper operation or

non-operation.

Do not clean sprinklers with soap and water, ammonia liquid or

any other cleaning fluids. Remove dust by gentle vacuuming

without touching the sprinkler.

Replace any sprinkler which has been painted (other than factory

applied). A stock of spare sprinklers should be maintained to

allow quick replacement of damaged or operated sprinklers.

Failure to properly maintain sprinklers may result in inadvertent

operation or non-operation during a re event.

Standard Finishes Special Application Finishes

Bronze Bright Brass(3)

Chrome Plated Black Plated

White Polyester Lead Plated

Wax Coated(4)

Wax(4) over Lead

Notes:

1. Other nishes and colors are available on special order.

Consult your Reliable sales representative for details.

2. Paint or any other coating applied over the factory nish will

void all approvals and warranties.

3. For 212°F (100°C) maximum temperature rated sprinklers

only.

4. Clear wax used on ordinary temperature rated sprinklers;

brown wax used on intermediate temperature rated

sprinklers. Brown wax may be used on high temperature

rated sprinklers where the ambient temperature does not

exceed 150°F (66°C).

Sprinkler Finishes(1)(2) Table B

Guarantee

For the Reliable Automatic Sprinkler Co., Inc. guarantee, terms,

and conditions, visit www.reliablesprinkler.com.

Ordering Information

Specify the following when ordering:

Model

• G

Threads/K Factor

• 3/8” BPST, 4.10 (59.1 metric)

• 1/2” BPST, 5.62 (81.0 metric)

• 3/4” BPST, 8.2 (118.2 metric)

Temperature Rating

• See Sprinkler Specication Page

Sprinkler Rating

• See Table B

Sprinkler Wrench

• Model W2

Model W2 Wrench Figure 5

P/N 9999970629

Bulletin 079

May 2021

Page 6 of 6

www.reliablesprinkler.com

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