Apollo Conbraco DC4SGLF, DC 4SG User Manual
DC4SGLF/4SG
SUBMITTAL SHEET
DESCRIPTION
The Apollo® Model DC4SGLF Double Check Valve is designed to prevent contamination of the potable water supply due to back-siphonage or
backpressure from substances that are non-health hazards. The modular check valves have replaceable seats and reversible EPDM seat discs. Grooved
connections on an epoxy-coated ductile iron body allow for easy connection to butterfly valves or gate valves.
Double Check Valve
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FEATU R ES
• Lightweight
• Short lay length
• Low pressure loss
• Modular check valves
• Individual access to check valves
• Corrosion resistant epoxy-coated ductile iron body
• US Patents #5,711,341 and #6,343,618
• MADE IN THE USA
APPROVALS
• Horizontal and Vertical Up Approvals
• ASSE 1048
• CSA B64.5
• AWWA C-5 10
• FM Approved
• UL® Cl a s s i fie d
• C-UL® Classified
• Approved by the Foundation for Cross-
STANDARD MATERIALS LIST
Connection Control and Hydraulic Research
PERFORMANCE RATING
• Maximum Working Pressure: 175 psi
• Temperature Range: 33°F – 140°F
• Hydrostatic Test Pressure: 350 psi
at the University of Southern California
• Approved by the City of New York
*UL and FM installations must include
indicating-type shuto valves.
PART NUMBER MATRIX
4SGLF 1 X X 0 X
Y-STRAINER SIZE SHUT-OFF VALVES
4SGLF - LEAD FREE 0 - NONE (STANDARD) 9 - 2-1/2 1 - LESS SHUT-OFF VALVES (SEE NOTES)
(2-1/2" - 6" ONLY) 1 - W/ Y-STRAINER 0 - 3” 2 - NRS FLANGED X NRS FLANGED
4SG - 8" (FLANGED ONLY, SHIPPED LOOSE) A - 4” 3 - OS&Y FLANGED X OS&Y FLANGED
C - 6” 4 - OS&Y FLANGE X MONITORED (MON.) BUTTERFLY VALVE GROOVE
6 - OS&Y FLANGE X POST INDICATOR FLANGE (NOT IN 2-1/2” SIZE)
7 - OS&Y FLANGE X OS&Y GROOVE
8 - OS&Y GROOVE X OS&Y GROOVE
9 - MON. BUTTERFLY VALVE GROOVE X MON. BUTTERFLY VALVE GROOVE
10 - OS&Y FLANGE X POST INDICATOR GROOVE (NOT IN 2 ½” SIZE)
11 - NRS GROOVE X NRS GROOVE
12 - NRS FLANGE X NRS GROOVE
BODY
COVERS (2-1/2”-6”)
CHECK VALVES (2-1/2”-6”)
SPRINGS
SEAT DISCS
Epoxy-coated (FDA) Ductile Iron
Epoxy-coated (FDA) Steel
Glass-Filled Noryl®
Stainless Steel
Chloramine-resistant EPDM
(704) 841-6000
apollovalves.com
SS1040 © 08/18 Page 1 of 3
This specification is provided for reference only. Apollo reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Apollo products previously or subsequently sold.
Most current information available at apollovalves.com.
SUBMITTAL SHEET
DIMENSIONS
MODEL NO.
PART NO.
SIZE
A (Butterfly Valves)* 29 29 ½ 29 ¾ 32 ½
A (Gate Valves)* 32 33 34 ½ 39
B (Grooved-end body) 17 17 16 ½ 18
C (Butterfly Valves) 8 8 ½ 9 ¼ 10 ¼
C (OS&Y Open) 16 ½ 18 ½ 22 ¾ 30 ½
D (Butterfly Valves) 4 ½ 4 ½ 4 ½ 4 ½
D (Gate Valves) 3 ½ 3 ¾ 4 ½ 5 ½
E (Butterfly Valves) 9 9 9 ½ 12
E (Gate Valves) 9 ¾ 10 ½ 11 ½ 14 ¾
F (Butterfly Valves) 18 ½ 19 ¼ 20 ¾ 22 ½
H(Post Indicator) Not Avail . 12 ½ 14 ¾ 19
Test Cocks (NPT) ½ ½ ½ ¾
WEIGHTS LB. LB. LB. LB.
Net Wt. (Less Valves) 53 53 53 60
Net Wt. (w/ Butterfly Valves) 80 83 97 128
Net Wt. (w/ OS&Y Gate Valves) 149 1 74 208 309
Nominal dimensions are shown. Allowances must be made for manufacturers’ tolerances.
Internal body connections are grooved on 2 ½” – 8” sizes.
2-1/2” 3” 4” 6”
DC4SGLF
Double Check Valve
(704) 841-6000
apollovalves.com
SS1040 © 08/18 Page 2 of 3
This specification is provided for reference only. Apollo reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Apollo products previously or subsequently sold.
Most current information available at apollovalves.com.
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