Buying Guide
62
NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.336.4226 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
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Visit www.nibco.com for current Chem-Guide and galvanic potential in piping systems information.
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AHEAD OF THE FLOW
®
Revised 7/20/2018
Iron Check Valves & Y-Strainers
Illustrated Index
Iron Body Swing Check Valve
Bronze Mounted or All Iron
125 lb. SWP
200 lb. CWP
F-918-B/F-918-N/T-918-B
Bronze or Cast Iron Disc
Sizes 2" thru 12"
Flanged or Threaded
Page 63, 64
Iron Body Swing Check Valve
Bronze Mounted
250 lb. SWP
500 lb. CWP
F-968-B
Bronze Disc
Sizes 2¹⁄₂" thru 6"
Flanged
Page 65
Lead Free Iron Body Grooved Silent Check Valve
Bronze Disc
250 lb. CWP
G-920-W-LF
Buna-N Seat
Sizes 2" thru 12"
Grooved
Page 71
Lead Free Iron Body Silent Check Valve
In-Line Lift • Wafer Style • Spring Actuated
125 lb. Class/200 lb. CWP
250 lb. Class/400 lb. CWP
W-910-LF, 125 lb. Class
W-960-LF, 250 lb. Class
Bronze or Buna-N Seat
Sizes 2" thru 10"
Wafer Style
Page 66
Lead Free Iron Body Silent Check Valve
In-Line Lift • Globe Style • Spring
Actuated
125 lb. Class/200 lb. CWP
250 lb. Class/400 lb. CWP
F-910-LF, 125 lb. Class
F-960-LF, 250 lb. Class
Bronze or Buna-N Seat
Sizes 2
1
/2
" thru 36"
Flanged
Page 67
Iron Y-Strainer
Screw-in Cap • Blow-off Plug
Class 250
T-751-A
20 Mesh or SS Perforated Screen
Sizes 1/4" - 3"
Threaded
Page 72
Iron Y-Strainer
Bolted Bonnet • Blow-off Plug
Class 125
F-721-A
20 Mesh or SS Perforated Screen
Sizes 2" - 16"
Flanged
Page 73
Iron Body Twin Disk Check Valve
125 lb. Class/250 lb. CWP
W-920-W-LF
Buna-N Seat
Sizes 2" thru 36"
Wafer Style
Page 68, 69, 70
NOTE: Check valves should never be installed immediately adjacent to a pump discharge or change in direction. Check Valves should
be installed downstream from all sources of line turbulence, including fittings and valves, at a minimum of 5x the nominal pipe diam-
eter (preferably 10x) with straight piping to provide laminar flow.