NNI INC, Manufacturer of Fire Protection Valves

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Wafer & Silent Check Valves

90 -UL/FM • Wafer Check Valve

250 WOG @ 180° Max
UL Listed • FM Approved*
*As antiwater hammer check valve for fire pump service only!
Ductile Iron Body with Bronze seat Ring Assembly
The 4”size is provided with ½” pipe plug in drain port as standard configuration.
Approved by New York City Board of Standards & Appeals under Calendar No. 157-84-SA.t
Sizes 4" - 8"

Spec Sheet

1400 Wafer & Threaded -1800 Globe FM • Silent Check Valves

The Silent Check Valve is the preferred choice in applications where silent operation and cost are of major concern. Its short linear stroke and spring return action combine to close the valve prior to flow reversal which effectively eliminates the shock and water hammer normally associated with the sudden stoppage of a reverse flow.

1400 Threaded Style available in sizes 1/2"-2"
1400A Wafer Style available in sizes 2"-10"
1800A Globe Style available in sizes 2 1/2 ”- 42”

Features
Silent Operation - fast closure to prevent check valve slam water hammer
Precision metal-to-metal seating
Expanded Body - provides full flow area
Double guided disc - prevents vibrations and wear
Resilient Seat - available for zero leakage
Heavy Duty Spring is tested for over 100,000 cycles
Able to be installed in all flow directions
Certifications
NSF/ANSI 372 Certified Lead-Free
NSF/ANSI 61 Certified for Drinking Water
FM Approved Wafer Style - 2" to 10"
FM Approved Globe Style - 2 1/2" to 12"

Spec Sheet

8800 Wafer & Grooved UL/ FM • Val-Matic Dual Disc® Check Valves

The Dual Disc® Check Valve with its compact wafer design and low cost have made it a popular choice when space and price are major factors in valve selection. The compact design features non-slam spring-assisted closing.

8800 Wafer Style available in sizes 2"- 66"
8800 Grooved End Style available in sizes 2”- 12”"

Features
Lift and Pivot Action - reduces seat wear, prolongs seat life
Stabilization Spheres - prevent vibration and wear
Disc Stabilization - prevents disc flutter
Flow Sensitive Closure - spring assisted closure minimizes the potential for water hammer
Certifications
NSF/ANSI 372 Certified Lead-Free
NSF/ANSI 61 Certified for Drinking Water
Meets AWWA C518 requirements
UL Approved 2 1/2" to 12"
FM Approved 2 1/2" to 16"

Spe c Sheet

453U - UL/FM • Dual Plate Check valve

650 P.S.I. at 150 degrees F
UL Listed. FM Approved.
Also available in flanged end configuration for working pressure of 250 P.S.I.G.
Body Ductile Iron ASTM A536
Plate Cast Bronze ASTM B62
Plate Seat EPDM Commercial
Sizes 2" - 12"

Spec Sheet

CVC • Check Valve-Wafer Style Body

200 WOG
C.I. Body with 304 S.S. Spring & Shaft
Spring Loaded Double Aluminum / Bronze Disc
6", 8", 10" and 12" Approved as Chemigation Valve
Suitable for Vertical & Horizontal Installation
Fits Flanges that Conform to ANSI B16.1
Sizes 2" -16"

Spec Sheet

SC • ISO-9002, Check Valve-

200 WOG-125 WSP
C.I. Body, Bronze Mounted (IBBM) Seat
Epoxy Coating
Bolted Bonnet
Conforms with MSS-SP-71
Threaded Ends Conform to ANSI / ASME B1.20.1
Sizes 2" - 8"

Spec Sheet