Product Overview

Series LF850
1
⁄2" - 2" (15-50mm) Outdoor Installation
Flow
12" Min.
(300mm)
12" (300mm) Minimum Clearance
to Fixed Structure
FEBCO product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise mea-
surements, please contact FEBCO. FEBCO reserves the right to change or modify product design, construction, specifications, or materials
without prior notice and without incurring any obligation to make such changes and modifications on FEBCO products previously or subse-
quently sold.
Job Name
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Contractor
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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The FEBCO Series LF850 Double Check Valve Assemblies are designed
for non-health hazard applications. The LF850S features Lead Free*
construction to comply with Lead Free* installation requirements. End
Connections – NPT ANSI / ASME B1.20.1. The Lead Free* Double Check
Valve Assemblies shall comply with state codes and standards, where
applicable, requiring reduced lead content.
Pressure – Temperature
Max. Working Pressure: 175psi (12.1 bar)
Hydrostatic Test Pressure: 350psi (24.1 bar)
Temperature Range: 32°F to 140°F (0°C to 60°C)
Materials
Valve Body: Lead Free* Bronze
Elastomers: Silicone
Springs: Stainless Steel
Models
• LF850-StandardAssemblywithBallValves
• LF850U-StandardAssemblywithUnionBallValves
Approvals – Standards
• ANSI/AWWAConformance(C510-92)
• ApprovedbytheFoundationfor
Cross-Connection Control and Hydraulic
ResearchattheUniversityofSouthernCalifornia.
Typical Installation
* The wetted surface of this product contacted by consumable water
contains less than one quarter of one percent (0.25%) of lead by weight.
Series LF850
kPa psi
138 20
103 15
69 10
34 5
0 0
2" (50mm)
0 30 60 90 120 150 180 gpm
0 114 227 341 454 570 681 lpm
HEADLOSS (PSI)
kPa psi
138 20
103 15
69 10
34 5
0 0
1
1
⁄2" (40mm)
0 20 40 60 80 100 120 gpm
0 76 152 227 303 379 454 lpm
HEADLOSS (PSI)
kPa psi
138 20
103 15
69 10
34 5
0 0
1
1
⁄4" (32mm)
0 20 40 60 80 100 120 gpm
0 76 152 227 303 379 454 lpm
HEADLOSS (PSI)
kPa psi
138 20
103 15
69 10
34 5
0 0
1" (25mm)
0 10 20 30 40 50 60 gpm
0 38 76 114 152 190 227 lpm
HEADLOSS (PSI)
kPa psi
138 20
103 15
69 10
34 5
0 0
3
⁄4" (20mm)
0 5 10 15 20 25 30 gpm
0 19 38 57 76 95 114 lpm
HEADLOSS (PSI)
kPa psi
138 20
103 15
69 10
34 5
0 0
1
⁄2" (15mm)
0 3 6 9 12 15 18 gpm
0 11 23 34 45 57 68 lpm
HEADLOSS (PSI)
Capacity
1015 B64.5
ES-F-LF850S
SPECIFICATION SHEET
Series LF850
Lead Free* Double
Check Valve Assemblies
Size:
1
⁄2" - 2" (15mm - 50mm)
LEAD FREE
*