Bulletin 621 December 2020

Model CR Commercial Riser

1-1/2” through 8” (40-200 mm) Sizes

cULus Listed, FM Approved

Features
• Cast stainless steel body for 1-1/2” models and 2” threaded
model
• Schedule 10 welded body for 2” - 8” grooved versions
• Optional schedule 40 manifold for 2” - 4” sizes
• Approved for vertical or horizontal installation

Product Description
The Reliable Model CR Commercial Riser arrives factory
assembled with water flow switch, pressure gauge, and main
drain for a cost-effective system riser or floor control assembly.
The Model CR is cULus listed (VEOY.EX5980) and FM approved
as a unit. The main drain is available with a ball valve or Reliable
3” (80mm) welded Commercial Riser
Test and Drain valve, which is available with a wide selection of
w/ 175psi Pressure Relief Kit and Test & Drain Valve (K5.6)
test orifice K-factor choices. An optional pressure relief valve kit,
available in 175, 185, 210, 260, and 310 psi (12, 13, 14, 18, and
21 bar) rating, is also available.

Model CR Commercial Riser Table A

K-Factor for
Pressure End-to-End Optional Test
Valve Size End Connections Material Drain Size
Rating Take Out and Drain
Valve*
Threaded 8-1/4”
Cast Stainless 1” (25mm)
(NPT or BSPT) (210mm)
1-1/2” (40mm)
250 psi 9-1/2”
Grooved Cast Stainless 1” (25mm) 2.8 (40)
(17.2 bar) (241mm)
4.2 (60)
Threaded 8-1/4” 5.6 (80)
2” (50mm) Cast Stainless 1” (25mm)
(NPT or BSPT) (210mm)
13”
2” (50mm) Grooved S10, S40 Steel 1” (25mm)
(330mm)
13” 1-1/4” 2.8 (40)
2-1/2” (65mm) Grooved S10, S40 Steel
(330mm) (32mm) 4.2 (60)
5.6 (80)
13” 1-1/4” 8.0 (115)
3” (80mm) Grooved S10, S40 Steel
300 psi (330mm) (32mm) 11.2 (160)
(20.7 bar)
13” 2.8 (40)
4” (100mm) Grooved S10, S40 Steel 2” (50mm)
(330mm) 4.2 (60)
13” 5.6 (80)
6” (150mm) Grooved S10 Steel 2” (50mm)
(330mm) 8.0 (115),
13” 11.2 (160)
8” (200mm) Grooved S10 Steel 2” (50mm) 16.8 (240)
(330mm)

*Note: K-factor must be equal to or less than the K-factor of the smallest K-factor installed on the sprinkler system. For sprinkler sys-
tems where the smallest K-factor sprinkler on the system is greater than the largest available valve K-factor, use any valve K-factor that
will provide a minimum flow of 10gpm (38 lpm) as required to operate a UL Listed Waterflow Switch.

www.reliablesprinkler.com
 Model CR Commercial Riser Threaded End
Assemblies (1-1/2” [40mm] & 2” [50mm]) Figure 1

Threaded End Basic Assembly w/

Pressure Relief Valve Table B

Manifold A B C D E Weight
End
Pipe Size in in in in in lbs
Connection
in (mm) (mm) (mm) (mm) (mm) (mm) (kg)

12-
1-1/2 10-1/2 3 5-1/2 8-1/4 8.3
1/8
(40) (267) (80) (140) (210) (3.8)
Threaded (308)
Ends
(See Fig. 1) 12-
2 10-3/4 3-1/4 5-3/4 8-1/4 9.1
1/8
(50) (273) (83) (146) (210) (4.1)
(308)

Threaded End w/ Test & Drain Valve and

Pressure Relief Kits Table C

Manifold A B C D E Weight
End
Pipe Size in in in in in lbs
Connection
in (mm) (mm) (mm) (mm) (mm) (mm) (kg)

12-
1-1/2 14-1/4 3 5-1/2 8-1/4 8.3
1/8
Threaded (40) (362) (80) (140) (210) (3.8)
(308)
Ends
(See Fig. 1) 12-
2 14-1/2 3-1/4 5-3/4 8-1/4 9.1
1/8
(50) (368) (83) (146) (210) (4.1)
(308)

Bulletin 621 Page 2 of 5

December 2020 www.reliablesprinkler.com
 Model CR Commercial Riser Grooved End
Assemblies (2” [50mm] - 8” [200mm]) Figure 2

Grooved End Basic Assembly w/

Pressure Relief Valve Table D
Manifold A B C D E Weight
End
Pipe Size in in in in in lbs
Connection
in (mm) (mm) (mm) (mm) (mm) (mm) (kg)
1-1/2 13-1/2 10-1/2 3 5-1/2 9-1/2 8.3
(40) (343) (267) (76) (140) (241) (3.8)

2 15-1/4 14-1/2 5-1/4 6 13 10.7

(50) (387) (368) (133) (152) (330) (4.9)

2-1/2 15-1/4 15 6-3/4 6-1/4 13 12.9

(65) (387) (381) (171) (159) (330) (5.9)
Grooved
Ends 3 15-1/4 16-1/4 7 6-1/2 13 17.6
(See Fig. 2) (80) (387) (413) (178) (165) (330) (8.0)
4 15-1/4 19 8-1/4 7 13 21.3
(80) (387) (483) (210) (178) (330) (9.7)
6 15-1/4 21-1/2 9-1/4 8 13 26.3
(150) (387) (546) (235) (203) (330) (11.9)
8 15-1/4 23 10-1/4 9 13 31.0
(200) (387) (584) (260) (229) (330) (14.1)

Grooved End w/ Test & Drain Valve and

Pressure Relief Kits Table E
Manifold A B C D E Weight
End
Pipe Size in in in in in lbs
Connection
in (mm) (mm) (mm) (mm) (mm) (mm) (kg)
1-1/2 13-1/2 11-1/2 3-1/2 5-3/4 9-1/2 8.3
(40) (343) (292) (89) (146) (241) (3.8)

2 15-1/4 16 5-1/4 6 13 10.7

(50) (387) (406) (133) (152) (330) (4.9)

2-1/2 15-1/4 16-1/2 6-3/4 6-1/4 13 12.9

(65) (387) (419) (171) (159) (330) (5.9)
Grooved
3 15-1/4 17-1/4 7 6-1/2 13 17.6
Ends
(80) (387) (438) (178) (165) (330) (8.0)
(See Fig. 2)
4 15-1/4 20-1/2 8-1/4 7 13 21.3
(80) (387) (521) (210) (178) (330) (9.7)
6 15-1/4 23 9-1/4 8 13 26.3
(150) (387) (584) (235) (203) (330) (11.9)
8 15-1/4 24-1/2 10-1/4 9 13 31.0
(200) (387) (622) (260) (229) (330) (14.1)
Notes:
1. 1-1/2” grooved version will be cast in stainless steel.
2. 1-1/2” and 2” models will have threaded test and drain valve.

Bulletin 621 Page 3 of 5

December 2020 www.reliablesprinkler.com
 Installation
The Model CR Commercial Riser shall be installed in accordance
with NFPA 13, “Standard for the Installation of Sprinkler Systems,”
as well as the requirements of any authorities having jurisdiction.
When installed vertically, the direction of flow shall be up through
the assembly. For horizontal installations, the water flow indicator
must be located to the top and drain opening to the bottom. Failure
to follow installation instructions may void the warranty and/or listing
of the valve. Verify compatibility of the Model CR Commercial Riser
materials with the water supply and the environment where the valve
will be installed prior to installation.

Maintenance
The owner is responsible for maintaining the fire protection system
in proper operating condition. Any system maintenance or testing
that involves placing a system out of service may eliminate the fire
protection that is provided by the fire protection system. Notify any
required authorities having jurisdiction and implement appropriate
precautions prior to proceeding.

The Reliable Model CR Commercial Riser shall periodically be given

a thorough inspection and test. NFPA 25, “Inspection, Testing and
Maintenance of Water Based Fire Protection Systems,” provides
minimum maintenance requirements. Replace any components
found to be corroded, damaged, worn or non-operable. Increase
the frequency of inspections when the valve is exposed to corrosive
conditions or chemicals that could impact materials and/or operation
of the assembly.

Guarantee
For Reliable Automatic Sprinkler, Co., Inc. guarantee, terms, and
conditions, visit www.reliablesprinkler.com.

Ordering Information
Specify:

1. Reliable Model CR Commercial Riser

2. Size
3. End Connections
4. (Optional) Schedule 40 (2” through 4” grooved end only)
5. Drain Option (Ball valve or Test and Drain valve)
6. Test orifice K-factor (if ordering Test and Drain valve)
7. (Optional) Pressure Relief Valve Kit

Notes:
1. All Model CR Commercial Riser Assemblies come with a 300
psi (20.7 bar) UL Listed and FM Approved pressure gauge
for 175 psi (12.1 bar) applications. If the Model CR Com-
mercial Riser Assembly is to be installed in a higher pressure
application, please purchase a 600 psi (41.4 bar) (P/N
98248005) pressure gauge. This gauge may or may not be
UL Listed and/or FM Approved at the time of purchase.
2. Unless specified at the time of ordering, pressure relief kits
are installed at the factory.

Bulletin 621 Page 4 of 5

December 2020 www.reliablesprinkler.com
 Commercial Riser Ordering Information Part Number Figure 3

6A X X 0C P Y Y Z

Riser Manifold Option

Pressure Relief Valve
Size & End Connections Drain Valve/K-Factor
Z
XX YY
04 = 1-1/2” BSPT Female SS 00 = 1” Ball Valve 0 = None
05 = 1-/2” Grooved SS 03 = 1” RASCO T&D Valve K2.8 1 = 175 psi (12.1 bar)
07 = 2” BSPT Female SS 04 = 1” RASCO T&D Valve K4.2 2 = 185 psi (12.8 bar)
08 = 1-1/2” NPT Female SS 05 = 1” RASCO T&D Valve K5.6 3 = 210 psi (14.5 bar)
09 = 2” NPT Female SS 4 = 260 psi (17.9 bar)
10 = 2” Grooved SCH10 5 = 310 psi (21.4 bar)
11 = 2” Grooved SCH40
12 = 2-1/2” Grooved SCH10 01 = 1-1/4” Ball Valve
13 = 2-1/2” Grooved SCH40 26 = 1-1/4” RASCO T&D Valve K2.8
14 = 3” Grooved SCH10 06 = 1-1/4” RASCO T&D Valve K4.2
15 = 3” Grooved SCH40 07 = 1-1/4” RASCO T&D Valve K5.6
08 = 1-1/4” RASCO T&D Valve K8.0
09 = 1-1/4” RASCO T&D Valve K11.2
16 = 4” Grooved SCH10 02 = 2” Ball Valve
17 = 4” Grooved SCH40 27 = 2” RASCO T&D Valve K2.8
18 = 6” Grooved SCH10 28 = 2” RASCO T&D Valve K4.2
19 = 8” Grooved SCH10 10 = 2” RASCO T&D Valve K5.6
11 = 2” RASCO T&D Valve K8.0
12 = 2” RASCO T&D Valve K11.2
13 = 2” RASCO T&D Valve K16.8

Notes:
1. 1-1/2” and 2” manifolds have a 1” threaded drain outlet.
2. 2-1/2” and 3” manifolds have a 1-1/4” grooved outlet for Test & Drain valve or a 1-1/4” threaded outlet for ball valve drain.
3. 4”, 6”, and 8” manifolds have a 2” grooved outlet for Test & Drain valve or 2” threaded outlet for ball valve drain.

P/N 9999970536

Bulletin 621 Page 5 of 5

December 2020 www.reliablesprinkler.com