Flomatic SDC Shematics

Single Detector Check Valve Specification Sheet

Model SDC (3”-8”)

FEATURES:
Sizes: □3” □4” □6” □8”

Max. working pressure: 175 PSI (1200 kPa)
Max. working temperature: 140

F (60C)

Hydrostatic Test Pressure: 350 PSI (2400 kPa)
Pipe connections:
Grooved (cut for steel pipe): AWWA C606
Flanged: ANSI B16.1 CL.125

MATERIALS:

Valve Body: Ductile Iron
Access Cover: Ductile Iron
Polymers: Noryl

TM,

NSF Listed
Elastomers: Silicone, Buna-N (FDA approved)
Springs: Stainless Steel
Coating: FDA approved fusion epoxy

OPTIONS:

 G – Grooved pipe connection
 D – with by-pass detector assembly
 E – Australian flanged connection
 1 – less NRS gate valves (ex: B9017-replace 3

rd

number with a 1)
 OS&Y – with OS&Y valves

STANDARDS COMPLIANCE:

The Single Detector Check backflow preventer shall
meet the requirements of the following standards:

UL 312, FM-1045 4“ & 6” only

Complies with California Low Lead Plumbing Laws

IAPMO Certificate 6249
FLOMATIC SPECIFICATIONS:

Single Detector Check Valve Assembly backflow
preventer shall protect against backflow by either
backpressure or backsiphonage from a cross­connection between potable water systems and
substances that are non-health hazards in fire sprinkler
systems.

The device shall be constructed from ductile iron (65­45-12). It shall consist of one (1) spring-loaded, center
stem, guided check valve. The device shall have a
cast ductile iron body, with a single access cover
utilizing a grooved pipe coupling. The assembly shall
have two (2) NPT/BSP tapped holes located upstream
and downstream of the check valve for installation of
the by-pass assembly (including a single check valve,
shutoff valve and water meter) for detecting low flow.

The seat of each check valve shall be constructed from

TM

Noryl

or bronze and shall be replaceable. The check
valve shall be held in place by a Noryl
Steel clip.

The backflow preventer shall be suitable for supply

pressure up to 175 psi and water temperatures
from 33

 to 140 F.

Size A B C D Wgt (Flanged) Wgt (Grooved)

Inch mm

3 80 B9006 32.0 813 16.0 405 8 200 18.9 480 46 21 32 15 4 2

4 100 B9007 34.5 876 16.5 420 8.5 215 22.8 578 65 29 41 19 7 3

6 150 B9009 43.5 1105 22.5 570 10 250 30.1 765 120 54 90 41 9 4

8 200 B90010 49.5 1257 26.5 673 12 300 37.8 960 NA NA 185 84 11 5

Part #

Inch mm Inch mm Inch mm Inch mm lbs kg lbs kg lbs kg

Flomatic Corporation

TM

or Stainless

Wgt of

Bypass

Flomatic Corporation, 15 Pruyn’s Island, Glens Falls, New York 12801

Phone: [phone] Fax: [phone] www.flomatic.com

Nov. 27,2006 Rev. 2 (6/11)
Specification Sheet SDC-V

Single Detector Check Valve Specification Sheet

Model SDC (3”-8”)

FLOW CHARACTERISTICS

P
R

M/WC

kPa

E

69 7 10

S
S

55 5.6

U
R
E

42 4.2 6

L
O

28 2.8

S
S

14 1.4 2

TYPICAL INSTALLATION

Model SDC Single Detector Check Valve Backflow
Preventers should be installed with adequate clearance

psi

8

FLOW CURVES

3" (80mm)

4" (100mm)

4

0

350

79.49

22.08

700

158.97

44.17

1050

238.45

66.26

FLOW RATE

1400

317.94

88.34

and easy accessibility for testing and maintenance and
must be protected from freezing. Local codes shall
govern installation requirements. Unless otherwise
specified, the assembly shall be mounted at a minimum
clearance of 12” (305mm) between port and floor or
grade. The assembly shall have a maximum of 30”
(762mm) above adequate drains with sufficient side
clearance for testing and maintenance. The installation
shall be made so that no part of the unit can be
submerged. Thermal water expansion can cause
excessive pressure. Excessive pressure situations
should be eliminated to avoid possible damage to the

Pipe size 5 ft/sec 7.5 ft/sec 10 ft/sec 15 ft/sec

2 ½”

3”

4”

6”

8”

Capacity thru Schedule 40 Pipe (GPM)

75 112 149 224
115 173 230 346
198 298 397 595
450 675 900 1351
780 1169 1559 2339

system and assembly.

WARRANTY: Flomatic valves are guaranteed against defects of materials or workmanship when used for the services

recommended. If in any recommended service, a defect develops due to material or workmanship, and the device is
returned, freight prepaid, to Flomatic within 12 months from the date of purchase, it will be repaired or replaced free of
charge. Flomatic Corporations’ liability shall be limited to our agreement to repair or replace the valve only.

Flomatic Corporation

6" (150mm)

1750

397.43

110.43

2100 gpm

476.91 M /H

132.51 lps

3

Flomatic Corporation, 15 Pruyn’s Island, Glens Falls, New York 12801

Phone: [phone] Fax: [phone] www.flomatic.com

Nov. 27,2006 Rev. 2 (6/11)
Specification Sheet SDC-V