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  Our Catalog   Hydraulics, Pneumatics & Plumbing   Valves   Check Valves

Check Valves - 508 - Super Savings! Save up to 39%


Super Savings! Up to 39% off on Check Valves at In The National Interest. Top brands include Smith-Cooper International, DELTA FAUCET, i Flow H2O, Valterra, Parts2O, Zoeller, Campbell, Wayne, Parker, Mueller Steam Specialty, & Nibco. Hurry! Limited time offers. Offers valid only while supplies last.



Smith-Cooper International CV30L Series Brass Check Valve, Potable Water Service, 1'' NPT Female
Smith-Cooper International CV30L Series Brass Check Valve, Potable Water Service, 1" NPT Female
In Stock
$18.33

mpn: 0209CV30KL, ean: 0092201383396,

The Smith-Cooper International CV30L series check valve for potable water service is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. Brass can be connected to copper, brass, plastic, aluminum, an...


Peerless RP73625 Classic, Check Valve
Peerless RP73625 Classic, Check Valve
In Stock
$12.40
$9.79
You Save: 21%

mpn: RP73625, ean: 7336117953919,

When installed with the Single Function Pressure Balance Valve Cartridge RP70538, this check valve helps to protect you and your family from sudden temperature changes. Single-function valves conveniently control water temperature and volume with one...


i Flow H2O Check Valve 1/2”inch,Barbed plastic,Pex Tubing,Fish Aquarium Filter Pump,Boat Marine,Hydroponics Grow,Potable Water,Anti-Back Flow,One-Way,RV,Hydronic heat, Actual Barb Size(OD)-15/32''inch
i Flow H2O Check Valve 1/2”inch,Barbed plastic,Pex Tubing,Fish Aquarium Filter Pump,Boat Marine,Hydroponics Grow,Potable Water,Anti-Back Flow,One-Way,RV,Hydronic heat, Actual Barb Size(OD)-15/32"inch
In Stock
$16.99

ean: 0704907956889,

WARNING! Attention to "ACTUAL SIZE" for barb-size 15/32"inch=Premium USA Quality 15/32" Check Valve Posi-Seal Anti-Back Flow=This high performance anti-leak check valve will solve your back-flow problems, install it and forget it! Its high strength s...


Valterra 200-C15W PVC Swing (No Spring) Check Valve, Clear, 1-1/2'' Slip
Valterra 200-C15W PVC Swing (No Spring) Check Valve, Clear, 1-1/2" Slip
In Stock
$13.31
$13.29

mpn: 200-C15W, ean: 0019079201560,

This Valterra 200-C15W check valve is made of clear schedule 40 (standard wall) PVC for corrosion resistance, high strength, and less weight than fittings made from metal. It is compatible with schedule 40 PVC (polyvinyl chloride) pipes and fittings ...


Parts2O TC2503LF 1-Inch Foot Valve
Parts2O TC2503LF 1-Inch Foot Valve
In Stock
$21.50
$17.67
You Save: 18%

mpn: TC2503LF-P2, ean: 0022315344136,

1" Foot Valve.Lead-free brass and stainless steel construction. 1" Threaded openings. Check valve and strainer in one. ...


Zoeller 30-0151 2-Inch Cast Iron Slip x Slip Check Valve Union
Zoeller 30-0151 2-Inch Cast Iron Slip x Slip Check Valve Union
In Stock
$39.95

mpn: 30-0151, ean: 0784497434790,

30-0151 Features: -2" x 2" Slip cast iron check valve. -Designed for vertical or horizontal installation. -Full flow design allows for maximum efficiency. -Suitable for installation below basin cover. -Prevents fluid from returning to pit once pumped...


Valterra 200-20W PVC Swing (No Spring) Check Valve, White, 2'' Slip
Valterra 200-20W PVC Swing (No Spring) Check Valve, White, 2" Slip
In Stock
$19.64
$15.06
You Save: 23%

mpn: 200-20W, ean: 0019079902054,

This Valterra 200-20W check valve is made of white schedule 40 PVC (polyvinyl chloride) for strength and resistance to corrosion and mild chemicals. Its EPDM (ethylene propylene diene monomer) seal resists degradation caused by water and oils, and it...


Campbell Mfg Llc 2''  Quietsewage Chk Valve B-0823-20C Well Supply Accessories
Campbell Mfg Llc 2" Quietsewage Chk Valve B-0823-20C Well Supply Accessories
In Stock
$24.39
$22.29
You Save: 9%

mpn: B-0823-20C, ean: 0039172045069,

2', Quiet Sewage Check Valve, No Slamming When Flapper Closes, Clear Heavy Duty PVC For Monitoring Check Valve Operation, True Union Design Allows For Easy Repair Or Pump Replacement, 1/2 LB Stainless Steel Spring, Solvent Weld Connection To Piping.B...


WAYNE 1-1/2 in. Check Valve With PVC Clamps
WAYNE 1-1/2 in. Check Valve With PVC Clamps
In Stock
$9.99
$9.79
You Save: 2%

mpn: 66005-WYN1, ean: 0040066107442,

Wayne 66005-WYN1 1.5 in. Check valve kit. 1-1/2" pump thread with 1-1/4" or 1/12" pipe connection. For use with all types of sump pumps.For use with all types of sump pumps. Keeps water from returning to sump basin. Reduces noise. Includes 1-1/4" red...


Zoeller 30-0181 PVC Plastic Check Valve, 1-1/2 Inch
Zoeller 30-0181 PVC Plastic Check Valve, 1-1/2 Inch
In Stock
$19.79
$12.00
You Save: 39%

mpn: 30-0181, ean: 0074748353179,

When you have residential or commercial wastewater issues, you can count on Zoeller Pumps to deliver the very best solutions-our commitment to top quality offers you years of service and durability.1-1/2 slip x slip unions. Flapper bends over a radiu...


Colorflow Check Valve - NPT
Colorflow Check Valve - NPT
In Stock
$655.56

mpn: C2400S65,

Parker Colorflow Check Valve - NPT Ports...


Parker C2400S Colorflow Check Valve - NPT
Parker C2400S Colorflow Check Valve - NPT
In Stock
$655.56

mpn: C2400S,

Parker Colorflow Check Valve - NPT Ports...


Parker Colorflow Check Valve - SAE Ports
Parker Colorflow Check Valve - SAE Ports
In Stock
$575.59

mpn: C2020S,

Parker Colorflow Check Valve - SAE Ports...


Colorflow Check Valve - SAE
Colorflow Check Valve - SAE
In Stock
$575.59

mpn: C2020S65,

Parker Colorflow Check Valve - SAE Ports...


Colorflow Check Valve - NPT
Colorflow Check Valve - NPT
In Stock
$977.04

mpn: CS1200S65,

Parker Colorflow Check Valve - NPT Ports...


Double Disc Check Valve, Cast Iron, 6 In.
Double Disc Check Valve, Cast Iron, 6 In.
In Stock
$582.60

mpn: 6 71AHB3H,

'Double Disc Check Valve, Material of Construction Cast Iron, Size 6 In, Fits Within ANSI Flanges Connection, Length 3 In., Rated For 200 PSI, Max. Temp. 100 F, Vertical Mounting Position, Spring Material 316 Stainless Steel, Seal Buna N, Standards A...


3inch PVC Check Valve with Socket Ends
3inch PVC Check Valve with Socket Ends
In Stock
$580.91

mpn: 18307, ean: 0653958199410,

Not spring loaded but the design insures free movement of the ball. Ball supported by a system of guide ribs to give full flow with minimum turbulence and chatter. Union connections for easy access to valve components. Requires only inches of head pr...


NIBCO  F910B-LF Silent Check Valve   Lead-Free, Class 125, Flanged, Bronze Seat, 6''
NIBCO F910B-LF Silent Check Valve Lead-Free, Class 125, Flanged, Bronze Seat, 6"
In Stock
$867.48

mpn: NHDY0XK, ean: 0039923326553,

Check valves prevent backflow by automatically closing when fluid reverses direction. Wafer checks may be installed in horizontal positions (or vertical with flow moving up). Please refer to NIBCO technical data sheets, chemical resistance guides and...



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