Grinnell G-FIRE 579 General Description Manual

G-FIRE Figure 579
Grooved Rigid Coupling
2 Inch to 8 Inch (DN50 to DN200)

Worldwide

Contacts

www.tyco-fire.com

General
Description

The GRINNELL G-FIRE Figure 579
Grooved Rigid Couplings provide a
rigid joint by firmly gripping along the
full circumference of the pipe grooves.
Figure 579 couplings are a dependable
method of joining pipe and are an eco­nomical alternative to welding, thread­ing, or using flanges.

Figure 579 couplings are rated at pres­sures up to 365 psi (25,2 bar) depend­ing on pipe size and wall thickness
when used in fire protection service
applications. Refer to Table A.

NOTICE

The GRINNELL G-FIRE Figure 579
Grooved Rigid Coupling described
herein must be installed and main­tained in compliance with this docu­ment, as well as with the applicable
standards of the Approval agency, in
addition to the standards of any other
authorities having jurisdiction. Failure
to do so may result in serious personal
injury or impair the performance of
these devices.

Never remove any piping component
nor correct or modify any piping defi­ciencies without first de-pressurizing
and draining the system. Failure to do
so may result in serious personal injury,
property damage, and/or impaired
device performance.

It is the designer’s responsibility
to select products suitable for the
intended service and to ensure that
pressure ratings and performance
data are not exceeded. Material and
gasket selection should be verified to
be compatible for the specific applica­tion. Always read and understand the
installation instructions.

IMPORTANT

Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.

The owner is responsible for main­taining their mechanical system and
devices in proper operating condi­tion. Contact the installing contrac­tor or device manufacturer with any
questions.

Technical
Data

Approvals

UL and ULC Listed
FM Approved

Refer to Table A for details.

Sizes

2 in. to 8 in. (DN50 to DN200)

Housing

Ductile iron conforming to ASTM A536,
Grade 65-45-12

Finish

• Orange non-lead paint

• Red non-lead paint

•

Hot-dipped, Galvanized conforming
to ASTM A153

Bolt/Nut

• ANSI:
Carbon Steel oval neck track head
bolts are heat-treated and conform
to the physical properties of ASTM
A183 Grade 2 and SAE J429 Grade
5 with a minimum tensile strength of
110,000 psi.

Carbon Steel heavy hex nuts con­form to the physical properties of
ASTM A183 Grade 2 and SAE J995
Grade 5. Bolts and nuts are zinc­electroplated conforming to ASTM
B633.

• Metric:

Carbon Steel oval neck track head
bolts (Gold color coded) are heat­treated and conform to the physical
properties of ASTM F568M with a
minimum tensile strength of 760
MPa.

Carbon Steel heavy hex nuts con­form to the physical properties of
ASTM A563M Class 9. Bolts and
nuts are zinc-electroplated conform­ing to ASTM B633.

For Fire Pr otection p ressure r ating,

listin g, and approval informa tion, cont act

your GRINNELL Representative.

Gaskets

• Pre-lubricated Grade “A” EPDM,
Violet color code,

-30°F to 150°F (-34°C to 66°C)

For dry and freezer systems, lubrica­tion is required. Refer to Installation
Manual IH-1000FP for details.

For proper gasket selection, refer to
Technical Data Sheet TFP1895.

Page 1 of 6 FEBRUARY 2019 TFP1856

TFP1856

D

OPEN CLOSED

Page 2 of 6

Pipe Size

Nominal

ANSI

Inches

DN

2

50

O.D.

Inches

(mm)

2.375
(60,3)

2 1/2652.875

(73,0)

76 .1

65

80

100

139.7
125

16 5.1

150

150

200

Note:

a. M aximum ava ilable gap between pipe ends. Mi nimum gap = 0.120 in. (3,05 m m)
b. Ma ximum Pre ssure and End Load are tot al from all loads based on standa rd weight ste el pipe.

Pressure ratings and end load s may diffe r for other pi pe materia ls and/or wal l thickne ss. Contact your GRIN NELL Repre sentative.
c. M ax End Gap is for cut grooved standa rd weight pipe.
d. Gold color coded metric bolts and nuts are available upon request.

3.000
(76 ,1)

3

3.500
(88,9)

4

4.500

(114, 3)

5.500

(139,7)

6.500

(165 ,1)

6

6.625

(168 ,3)

8

8.625

(219 ,1)

Max.b

Pressures

psi

(bar)

365

(25,2)

365

(25,2)

350

(24,1)

365

(25,2)

365

(25,2)

300

(20,7 )

300

(20,7 )

365

(25,2)

365

(25,2)

Max.b

End

Load

Lbs.
(kN)

1617

( 7,19 )

2370

(10,54)

2474

(11,0 0 )

3512

(15,62)

5805

(25,82)

7127

(31,70)

9955

(44,28)

12582

(55,97)

21326

(94,86)

Max.

End
Gap

Inches

(mm)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.32
(8,1)

0.34
(8,6)

a, c

A
(Open)
Inches

(mm)

3.92

(99,6)

4.48

(113, 8 )

4.53

(115,1)

5.10

(129,5)

6.20

(1 57,5 )

7.63

(193,9)

8.67

(220,2)

8.85

(224,8)

11. 62

(29 5,1)

Nominal Dimensions Coupling Bolts

A

(

Closed
Inches

(mm)

3.41

(86,5)

3.97

(100,7)

4.09

(103,9)

4.57

(116, 0 )

5.67

(143,9)

7.14

(181, 3)

8.14

(206,6)

8.26

(209,8)

10.77

(273,5)

)

(

B
Radius
Inches

(mm)

2.94

(74,7)

3.19

(81,1)

3.24

(82,2)

3.45

(87, 7 )

4.32

(109,7)

4.92

(125,0)

5.39

(1 37,0 )

5.50

(139,6)

7.06

(179,4)

)

(

C
Radius
Inches

(mm)

3.36

(85,2)

3.54

(90,0)

3.59

(91,2)

3.79

(96,2)

4.71

(119, 6)

5.18

(131,5)

5.60

(142,2)

5.65

(143,6)

7. 29

(185 ,2)

)

(

Radius
Inches

(123,3)

(125,2)

(164,9)

D

(mm)

2.40

(60,8)

2.64

(67, 2 )

2.69

(68,3)

3.18

(80,7)

3.70

(93,9)

4.37

(111,1)

4.85

4.93

6.49

)

E

Inches

(mm)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.05

(51,9)

2.59

(65,8)

Qty.

1

1

1

1

1

1

1

1

1

Sized

Inches

(mm)

3/8 x 2-3/4

(M10 x 70)

3/8 x 2 3/4

(M10 x 70)

3/8 x 2 3/4

(M10 x 70)

3/8 x 2 3/4

(M10 x 70)

1/2 x 3 1/2

(M12 x 89)

1/2 x 3 1/2

(M12 x 89)

1/2 x 3 1/2

(M12 x 89)

1/2 x 3 1/2

(M12 x 89)

5/8 x 4 1/8

(M16 x 105)

Approx.

Weight

Lbs.

(kg)

1.9

(0,9)

2.1

(1,0 )

2.2

(1,0 )

2.8

(1,3)

4.0

(1,8)

5.9

(2,7)

6.7

(3,0)

6.7

(3,0)

14. 2
(6,4)

A

E

B

C

FIGURE 1

G-FIRE FIGURE 579 GROOVED RIGID COUPLING, 2 INCH TO 8 INCH (DN50 TO DN200)

NOMINAL DIMENSIONS

Pipe Sizesc

Nominal ANSI Inches

(O.D. mm)

2 (60,3)

2-1/2 (73,0); 3 (88,9); 4 (114,3)

6 (168,3); 8 (219,1)

a

Pipe O.D.c

mm

76 ,1

ISO 4200 Type D, E, and F

139,7

16 5,1

Note:

a. Fo r 8 in. (219,1 mm) size, minimum allowed pip e wall thickn ess is 0.188 in. (4,77 mm).
b. Se e Agency web site for Lis ting/Appr ovals of spec ialty pipe:

UL websi te - see Onlin e Certi cation Dir ectory, ww w.ul.com
FM Global website - www.approvalguide.com

c. A ll couplin gs approve d for dry pip e systems

TABLE A

LISTED/APPROVED PRESSURE RATINGS

Pressure Rating

Pipe

Schedule

b

UL ULC FM

10

40

10

40

10

40

Pipe

Specification

b

365

(25,2)

365

(25,2)

350

(24,1)

365

(25,2)

300

(20,7 )

365

(25,2)

ISO 4200 Type F

ISO 4200 Type E

ISO 4200 Type D

EN 10255 Heavy —

EN 10255 Medium

EN 10255 Heavy —

EN 10255 Medium —

EN 10255 Heavy —

EN 10255 Medium

TFP1856

Page 3 of 6

psi

(bar)

365

(25,2)

365

(25,2)

350

(24,1)

365

(25,2)

300

(20,7 )

365

(25,2)

Pressure Rating

UL FM

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

365

(25,2)

365

(25,2)

365

(25,2)

365

(25,2)

300

(20,7 )

365

(25,2)

psi

(bar)

350

(24,1)

300

(20,7 )

—

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

300

(20,7 )

TFP1856

Page 4 of 6

Installation

GRINNELL G-FIRE Figure 579 Grooved
Rigid Coupling must be installed in
accordance with this section.

General Instructions

Always read and understand the
instructions. Never remove any piping
component without verifying that the
system is depressurized and drained.

The Figure 579 Grooved Rigid Cou­pling with additional lubrication is rec­ommended for applications below
40°F (4°C).

The installation is based on pipe
grooved in accordance with Standard
Cut Groove or Roll Groove Specifica­tions. Refer to Technical Data Sheet
TFP1898 for additional information.

Step 1.

Step 2.

Step 2. Do not remove the nut from the

bolt. Open the coupling by extending
the coupling segments out to the extent
allowed by the bolt and nut.

Step 3.

Step 4.

Step 4. Slide the other pipe end into

the gasket/coupling ensuring that it
makes contact with the center stop of
the gasket (Ref. Figure 2). Both pipes
should be aligned vertically and hori­zontally. Verify that the housing is over
the gasket and that the housing keys
are aligned with the pipe grooves.

Step 5.

Step 1. Inspect exterior groove and

ends of the pipe to verify all burrs,
loose debris, dirt, chips, paint and any
other foreign material such as grease
are removed. Pipe end sealing sur­faces must be free from sharp edges,
projections, indentations, and/or other
defects.

Grade “A” gaskets are supplied with a
pre-lubricant and do not require addi­tional lubrication for applications above
40°F (4°C).

NOTE: Additional lubrication must be
used in dry pipe and freezer applica­tions. A silicone based lubricant is
recommended.

To prevent deterioration of the gasket
material a petroleum lubricant should
not be used on Grade “A” “EPDM”.

CAUTION

Removal of the nut from the bolt may
result in the coupling segments sepa­rating at the hinges and the coupling
disengaging from the pipe. Use caution
to avoid equipment damage and/or
personal injury.

Step 3. Push the gasket/coupling onto
one end of the pipe until the center­stop of the gasket is in contact with the
end of the pipe (Ref. Figure 2).

NOTE: The gasket center-stop should
not ride up onto the gasket sealing
surface (Ref. Figure 2).

CAUTION

Do not leave coupling unattended on
a single pipe end as it may disengage
from the pipe. Failure to do so may
result in equipment damage and/or
personal injury.

FIGURE 2

FIGURE 579 CENTER-STOP

GASKET POSITION

Step 5. Tighten nut to the recom­mended bolt torque (Ref. Table B).
Visually inspect the coupling to ensure
that the housing keys are engaged into
the pipe grooves.

NOTICE

The 2 in. to 8 in. (DN50 to DN200) cou­plings have an intended gap of up to
1/16 in. (1,60 mm) at the bolt pad to
allow for positive rigid gripping onto
the pipe.

Bolt-torque information is supplied
as a guideline and may be used when
setting the torque on power impact
wrenches. Refer to the manufacturer’s
instructions for settings.

Bolt lengthens require the use of deep
or extra-deep-well sockets. Sockets
inner depth information is supplied for
reference only. (Ref. Figure 4) For spe­cific socket recommendations, contact
Technical Services.

TFP1856

A

D

OD

FLARE

DEPTH

Page 5 of 6

Nominal

Pipe Size

ANSI

Inches

DN

2

50

2-1/ 2

65

76 ,1m m

(65)

3

80

4

100

139,7mm

(125)

16 5,1mm

(150 )

6

150

8

200

O.D.

Inches

(mm)

2.375
(60,3)

2.875
(73,0)

3.000
(76,2)

3.500
(88,9)

4.500

(114, 3)

5.500

(139,7)

6.500

(165 ,1)

6.625

(168 ,3)

8.625

(219 ,1)

Pipe O.D.

Inches (mm)

Tolerance

+ - Actual

0.024
(0,61)

0.029
(0,74)

0.030
(0,76)

0.035
(0,89)

0.045
(1,14)

0.056

(1,4 2)

0.063

(1,6 0)

0.063

(1,6 0)

0.063

(1,6 0)

0.024
(0,61)

0.029
(0,74)

0.030

(0,76)

0.031

(0,79)

0.031

(0,79)

0.031

(0,79)

0.031

(0,79)

0.031

(0,79)

0.031

(0,79)

A

±

0.030

±

0.76mm
Inches

(mm)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.750

(19,05)

±

0.030

±

0.76mm
Inches

(mm)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.344
(8 ,74)

0.469

(11,9 1)

B

C

Groove

Diameter

Inches/mm

Tol.

+0.000

2.250

(57,1 5)

2.720

(69,09)

2.845

(72,26)

3.344

(84,94)

4.334

(110, 0 8)

5.334

(135,48)

6.330

(160,78)

6.455

(163,96)

8. 441

(214,40)

B

-0 .015
(-0,38)

-0 .018
(-0,46)

-0 .018
(-0,46)

-0 .018
(-0,46)

-0.020
(-0,51)

-0.022
(-0,56)

-0.022
(-0,56)

-0.022
(-0,56)

-0.025
(-0,64)

T

D

Nominal

Groove

Depth

Inches

(mm)

0.062
(1,6 0)

0.078
(1,98)

0.076
(1,93)

0.078
(1,98)

0.083
(2,11)

0.083
(2,11)

0.085
(2,16 )

0.085
(2,16 )

0.092

(2,34)

T

Minimum

Wall

Inches

(mm)

0.065
(1,6 5)

0.083
(2,11)

0.083
(2,11)

0.083
(2,11)

0.083
(2,11)

0.109

(2,77 )

0.109

(2,77 )

0.109

(2,77 )

0.109

(2,77 )

Maximum

Allow Flare

Diameter

Inches

(mm)

2.48

(62,99)

2.98

(75,6 9)

3.10

(78 ,74 )

3.60

(91,44 )

4.60

(116, 8 4)

5.60

(142,24)

6.60

(1 67,6 4 )

6.73

(170,94 )

8.80

(223,52)

C

MAX.

*Swage g rooves must b e factor y produce d by Wheatla nd
Tube Co. and me et standa rd roll groove dimensio ns.
Swage grooves are UL Li sted only. See O nline Cer tica­tions Director y at www.UL.c om for details.

FIGURE 3

STANDARD SPECIFICATION

ROLL GROOVE AND SWAGE GROOVE*

STEEL PIPE

Bolt Size

ANSI

Inches

(mm)

3/8

(M10)

1/2

(M12)

5/8

(M16)

Socket Size

ANSI

Inches

(mm)

11/ 16

(17 )

7/8

(22)

1-1/16

(27)

Inner Minimum

Socket Depth

Inches

(mm)

2.00
(51)

2.40
(61)

3.00
(76)

Bolt Torque

Range

lb-ft

(N·m)

30-40

(40- 60)

90-110

(12 0-150 )

130-160

(175-215)

INNER

MINIMUM

SOCKET

FIGURE 4

BOLT TORQUE AND SOCKET SIZE

RECOMMENDATIONS

TFP1856

A

D

OD

Page 6 of 6

Nominal

Pipe Size

ANSI

Inches

DN

2

50

2-1/ 2

65

76 ,1m m

(65)

3

80

4

100

139,7mm

(125)

16 5,1mm

(150 )

6

150

8

200

O.D.

Inches

(mm)

2.375
(60,3)

2.875
(73,0)

3.000
(76,2)

3.500
(88,9)

4.500

(114, 3)

5.500

(139,7)

6.500

(165 ,1)

6.625

(168 ,3)

8.625

(219 ,1)

Pipe O.D.

Inches (mm)

Tolerance

+ - Actual

0.024
(0.61)

0.029
(0,74)

0.030
(0,76)

0.035
(0,89)

0.045
(1,14)

0.056

(1,4 2)

0.063

(1,6 0)

0.063

(1,6 0)

0.063

(1,6 0)

0.024
(0.61)

0.029
(0,74)

0.030
(0,76)

0.031
(0,79)

0.031
(0,79)

0.031
(0,79)

0.031
(0,79)

0.031
(0,79)

0.031
(0,79)

A

±

0.030

±

0.76mm
Inches

(mm)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.625

(15, 88)

0.750

(19,05)

±

0.030

±

0.76mm
Inches

(mm)

0.313
( 7,95)

0.313
( 7,95)

0.313
( 7,95)

0.313
( 7,95)

0.375
(9,53)

0.375
(9,53)

0.375
(9,53)

0.375
(9,53)

0.438

(11,13)

B

(110, 0 8)

(135,48)

(160,78)

(163,96)

(214,40)

B

Groove

Diameter

Inches/mm

2.250

(57,1 5)

2.720

(69,09)

2.845

(72,26)

3.344

(84,94)

4.334

5.334

6.330

6.455

8. 441

T

C

Tol.

+0.000

-0 .015
(-0,38)

-0 .018
(-0,46)

-0 .018
(-0,46)

-0 .018
(-0,46)

-0.020
(-0,51)

-0.022
(-0,56)

-0.022
(-0,56)

-0.022
(-0,56)

-0.025
(-0,64)

D

Nominal

Groove

Depth

Inches

(mm)

0.062
(1,6 0)

0.078
(1,98)

0.076
(1,93)

0.078
(1,98)

0.083
(2,11)

0.083
(2,11)

0.085
(2,16 )

0.085
(2,16 )

0.092

(2,34)

T

Minimum

Wall

Inches

(mm)

0.154
(3,91)

0.188
(4,78)

0.188
(4,78)

0.188
(4,78)

0.203
(5,16)

0.203
(5,16)

0.219
(5,56)

0.219
(5,56)

0.238
(6,05)

C

FIGURE 5

STANDARD SPECIFICATION

CUT GROOVE STEEL PIPE

Care and
Maintenance

The GRINNELL G-FIRE Figure 579
Grooved Rigid Coupling must be main­tained in accordance with this section.

Before closing a fire protection system
main control valve for maintenance
work on the fire protection system
that it controls, obtain permission to
shut down the affected fire protection
system from the proper authorities
and notify all personnel who may be
affected by this decision.

After placing a fire protection system
in service, notify the proper authorities
and advise those responsible for moni­toring proprietary and/or central station
alarms.

The owner is responsible for the inspec­tion, testing, and maintenance of their
fire protection system and devices in
compliance with this document, as well
as with the applicable standards of the
NATIONAL FIRE PROTECTION ASSO­CIATION, such as NFPA 25, in addition
to the standards of any authority having
jurisdiction. Contact the installing con­tractor or product manufacturer with
any questions. Any impairments must
be immediately corrected.

Automatic sprinkler systems are rec­ommended to be inspected, tested,
and maintained by a qualified Inspec­tion Service in accordance with local
requirements and/or national codes.

Limited
Warranty

For warranty terms and conditions, visit
www.tyco-fire.com.

Ordering
Procedure

GRINNELL Products are available glob­ally through a network of distribution
centers. For the nearest distributor, visit
www.tyco-fire.com. When placing an
order, indicate the full product name.

Specify: G-FIRE Figure 579 Grooved
Rigid Coupling, quantity, pipe size
(Nominal ANSI or O.D.), finish (Orange,
Red, or Galvanized), and Pre-lubricated
Grade “A” EPDM gasket.

1400 Pennbroo k Parkway, Lansdale, PA 1944 6 | Telephone [phone]

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