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Check Valves

Prevent water backflow with PVC one-way check valves from NDS. Ensure efficient flow and protect your irrigation and drain systems from costly damage.

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NDS White 1/2 in. PVC Spring Check Valve (NDS 1011-05, NDS 1012-05)
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Key Features

  • Water flows one-way through check valves when the water pressure triggers the internal spring or flap to open
  • NDS offers 1/2 in. – 2 in. spring check valves, 3/4 in. – 4 in. swing check valves, as well as sump pump and foot valves
  • Spring check valves allow water through when the water pressure is greater than the weight of the spring
  • Swing check valves allow water through when the flap opens; flap shuts to prevent backflow if water direction changes
  • Check valves are made of polyvinyl chloride (PVC)

Applications

  • Directs water flow one-way through pipe and allows water through; prevents backflow and avoids costly property damage, pipe corrosion, and system issues
  • Use for subsurface irrigation or in sprinkler control system installation; works with most PVC pipe to transport water and prevent backflow in pressurized systems
  • Adjustable inline, true union, and compact spring check valves; low-profile, compression, true union, and sump pump swing check valves connect pipes and other system components to allow water to flow through and prevent backflow

Installation & Maintenance

  • Valve has ends that connect to pipe; ends can be turned to tighten onto pipe or may require solvent cement to keep in place
  • Valve can vibrate or emit noises to indicate damage; replace as needed

Materials & Sustainability

  • Check valves are made of polyvinyl chloride (PVC)
  • Onsite flow management protects pipe systems from backflow which can lead to corrosion of pipes, property damage, and issues with the flow system

Product Models

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117 products

    Part Number
    (click for more info)    		 Description
    1800-10 Foot Valve Screen, 1 in. IPS, 100 Mesh
    1800-15 Foot Valve Screen, 1-1/2 in. IPS, 100 Mesh
    1800-12 Foot Valve Screen, 1-1/4 in. IPS, 100 Mesh
    1800-20 Foot Valve Screen, 2 in. IPS, 100 Mesh
    CV-1000-FF PVC Adjustable Inline Spring Check Valve, 1 in. IPS FPT X FPT, 5 lb. Spring, Gray
    CV-1000-MF PVC Adjustable Inline Spring Check Valve, 1 in. IPS MPT X FPT, 5 lb. Spring, Gray
    CV-0500-FF PVC Adjustable Inline Spring Check Valve, 1/2 in. IPS FPT X FPT, 5 lb. Spring, Gray
    CV-0500-FM PVC Adjustable Inline Spring Check Valve, 1/2 in. IPS FPT X MPT, 5 lb. Spring, Gray
    CV-0500-MF PVC Adjustable Inline Spring Check Valve, 1/2 in. IPS MPT X FPT, 5 lb. Spring, Gray
    CV-0750-FF PVC Adjustable Inline Spring Check Valve, 3/4 in. IPS FPT X FPT, 5 lb. Spring, Gray
    CV-0750-MF PVC Adjustable Inline Spring Check Valve, 3/4 in. IPS MPT X FPT, 5 lb. Spring, Gray
    1205-10 PVC Adjustable Spring Check Valve, 1 in. IPS FPT X FPT, 4-1/8 - 17 lb. Spring, White
    1205-05 PVC Adjustable Spring Check Valve, 1/2 in. IPS FPT X FPT, 2 - 5 lb. Spring, White
    1205-15 PVC Adjustable Spring Check Valve, 1-1/2 in. IPS FPT X FPT, 3-1/2 - 50 lb. Spring, White
    1228V15 PVC Adjustable Spring Check Valve, 1-1/2 in. IPS S X S, 30 lb. Spring, White
    1205-20 PVC Adjustable Spring Check Valve, 2 in. IPS FPT X FPT, 1-3/4 - 14-1/2 lb. Spring, White
    1225-10 PVC Adjustable Spring Check Valve, 2 in. IPS S X S, 4-1/4 - 17 lb. Spring, White
    1205-07-20 PVC Adjustable Spring Check Valve, 3/4 in. IPS FPT X FPT, 20 lb. Spring, White
    1205-07 PVC Adjustable Spring Check Valve, 3/4 in. IPS FPT X FPT, 2-1/2 - 5 lb. Spring, White
    1050C10 PVC Air Check Valve, 1 in. IPS S X 1-1/4 in. Spigot, 1/4 lb. Spring, Clear
    1050C20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 1/4 lb. Spring, Clear
    S1050C20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 1/4 lb. Spring, Clear
    S1050-20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 1/4 lb. Spring, White
    S1052C20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 2 lb. Spring, Clear
    1053C20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 3 lb. Spring, Clear
    1055C20 PVC Air Check Valve, 1-1/2 in. IPS S X 2 in. Spigot, 5 lb. Spring, Clear
    1010-05-O PVC Breakaway Coupling Valve, 1/2 in. IPS FPT X FPT, Orange
    1010-07-O PVC Breakaway Coupling Valve, 3/4 in. IPS FPT X FPT, Orange
    1790C15 PVC Compact True Union Spring Check Valve, 1-1/2 in. IPS S X S, 1/2 lb. Spring, Clear
    1790-15 PVC Compact True Union Spring Check Valve, 1-1/2 in. IPS S X S, 1/2 lb. Spring, White
    1790C20 PVC Compact True Union Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, Clear
    1790-20 PVC Compact True Union Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, White
    1795C20 PVC Compact True Union Spring Check Valve, 2 in. IPS S X S, 5 lb. Spring, Clear
    1500C15 PVC Compression Swing Check Valve, 1-1/2 in. IPS UC X UC, Clear
    1500-15 PVC Compression Swing Check Valve, 1-1/2 in. IPS UC X UC, White
    1500-12 PVC Compression Swing Check Valve, 1-1/4 in. IPS UC X UC, White
    1500C20 PVC Compression Swing Check Valve, 2 in. IPS UC X UC, Clear
    1500-20 PVC Compression Swing Check Valve, 2 in. IPS UC X UC, White
    1500-30 PVC Compression Swing Check Valve, 3 in. IPS UC X UC, White
    1001-15FV PVC Foot Valve, 1-1/2 in. IPS FPT, 1/2 lb. Spring, White
    1001-20FV PVC Foot Valve, 2 in. IPS FPT, 1/2 lb. Spring, White
    1001-10 PVC Spring Check Valve, 1 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-10 PVC Spring Check Valve, 1 in. IPS FPT X FPT, 2 lb. Spring, White
    1011C10 PVC Spring Check Valve, 1 in. IPS S X S, 1/2 lb. Spring, Clear
    1011-10 PVC Spring Check Valve, 1 in. IPS S X S, 1/2 lb. Spring, White
    1012-10 PVC Spring Check Valve, 1 in. IPS S X S, 2 lb. Spring, White
    1001-05 PVC Spring Check Valve, 1/2 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-05 PVC Spring Check Valve, 1/2 in. IPS FPT X FPT, 2 lb. Spring, White
    1011-05 PVC Spring Check Valve, 1/2 in. IPS S X S, 1/2 lb. Spring, White
    1012-05 PVC Spring Check Valve, 1/2 in. IPS S X S, 2 lb. Spring, White
    1001-15 PVC Spring Check Valve, 1-1/2 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-15 PVC Spring Check Valve, 1-1/2 in. IPS FPT X FPT, 2 lb. Spring, White
    1011-15 PVC Spring Check Valve, 1-1/2 in. IPS S X S, 1/2 lb. Spring, White
    1012-15 PVC Spring Check Valve, 1-1/2 in. IPS S X S, 2 lb. Spring, White
    1001-12 PVC Spring Check Valve, 1-1/4 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-12 PVC Spring Check Valve, 1-1/4 in. IPS FPT X FPT, 2 lb. Spring, White
    1011-12 PVC Spring Check Valve, 1-1/4 in. IPS S X S, 1/2 lb. Spring, White
    1012-12 PVC Spring Check Valve, 1-1/4 in. IPS S X S, 2 lb. Spring, White
    1001-20 PVC Spring Check Valve, 2 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-20 PVC Spring Check Valve, 2 in. IPS FPT X FPT, 2 lb. Spring, White
    1011C20 PVC Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, Clear
    1011-20 PVC Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, White
    1012-20 PVC Spring Check Valve, 2 in. IPS S X S, 2 lb. Spring, White
    1012-25 PVC Spring Check Valve, 2-1/2 in. IPS S X S, 2 lb. Spring, White
    1015-25 PVC Spring Check Valve, 2-1/2 in. IPS S X S, 5 lb. Spring, White
    1001-30 PVC Spring Check Valve, 3 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-30 PVC Spring Check Valve, 3 in. IPS FPT X FPT, 2 lb. Spring, White
    1011-30 PVC Spring Check Valve, 3 in. IPS S X S, 1/2 lb. Spring, White
    1012-30 PVC Spring Check Valve, 3 in. IPS S X S, 2 lb. Spring, White
    1001-07 PVC Spring Check Valve, 3/4 in. IPS FPT X FPT, 1/2 lb. Spring, White
    1002-07 PVC Spring Check Valve, 3/4 in. IPS FPT X FPT, 2 lb. Spring, White
    1011-07 PVC Spring Check Valve, 3/4 in. IPS S X S, 1/2 lb. Spring, White
    1012-07 PVC Spring Check Valve, 3/4 in. IPS S X S, 2 lb. Spring, White
    1400-15 PVC Sump Pump Swing Check Valve, 1-1/4 in. and 1-1/2 in. IPS UC, White
    1520C10F PVC Swing Check Valve, 1 in. IPS FPT X FPT, Clear
    1520-10F PVC Swing Check Valve, 1 in. IPS FPT X FPT, White
    1520C10 PVC Swing Check Valve, 1 in. IPS S X S, Clear
    1520-10 PVC Swing Check Valve, 1 in. IPS S X S, White
    1520C05F PVC Swing Check Valve, 1/2 in. IPS FPT X FPT, Clear
    1520-05F PVC Swing Check Valve, 1/2 in. IPS FPT X FPT, White
    1520C05 PVC Swing Check Valve, 1/2 in. IPS S X S, Clear
    1520-05 PVC Swing Check Valve, 1/2 in. IPS S X S, White
    1520C15F PVC Swing Check Valve, 1-1/2 in. IPS FPT X FPT, Clear
    1520-15F PVC Swing Check Valve, 1-1/2 in. IPS FPT X FPT, White
    1520C15V PVC Swing Check Valve, 1-1/2 in. IPS S X S with Viton™ O-Ring, Clear
    1520C15 PVC Swing Check Valve, 1-1/2 in. IPS S X S, Clear
    1520-15 PVC Swing Check Valve, 1-1/2 in. IPS S X S, White
    1520-12F PVC Swing Check Valve, 1-1/4 in. IPS FPT X FPT, White
    1520C12 PVC Swing Check Valve, 1-1/4 in. IPS S X S, Clear
    1520-12 PVC Swing Check Valve, 1-1/4 in. IPS S X S, White
    1520C20F PVC Swing Check Valve, 2 in. IPS FPT X FPT, Clear
    1520-20F PVC Swing Check Valve, 2 in. IPS FPT X FPT, White
    1520V20 PVC Swing Check Valve, 2 in. IPS S X S with Viton™ O-Ring, White
    1520C20 PVC Swing Check Valve, 2 in. IPS S X S, Clear
    1520-20 PVC Swing Check Valve, 2 in. IPS S X S, White
    1520C30 PVC Swing Check Valve, 3 in. IPS S X S, Clear
    1520-30 PVC Swing Check Valve, 3 in. IPS S X S, White
    1520C07F PVC Swing Check Valve, 3/4 in. IPS FPT X FPT, Clear
    1520-07F PVC Swing Check Valve, 3/4 in. IPS FPT X FPT, White
    1520C07 PVC Swing Check Valve, 3/4 in. IPS S X S, Clear
    1520-07 PVC Swing Check Valve, 3/4 in. IPS S X S, White
    1520C40 PVC Swing Check Valve, 4 in. IPS S X S, Clear
    1520-40 PVC Swing Check Valve, 4 in. IPS S X S, White
    1700C10 PVC True Union Spring Check Valve, 1 in. IPS S X S, 1/2 lb. Spring, Clear
    1700C15 PVC True Union Spring Check Valve, 1-1/2 in. IPS S X S, 1/2 lb. Spring, Clear
    1700-15 PVC True Union Spring Check Valve, 1-1/2 in. IPS S X S, 1/2 lb. Spring, White
    1700C20 PVC True Union Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, Clear
    1700-20 PVC True Union Spring Check Valve, 2 in. IPS S X S, 1/2 lb. Spring, White
    1720C10 PVC True Union Swing Check Valve, 1 in. IPS U X U, Clear
    1720-10 PVC True Union Swing Check Valve, 1 in. IPS U X U, White
    1720C15 PVC True Union Swing Check Valve, 1-1/2 in. IPS U X U, Clear
    1720-15 PVC True Union Swing Check Valve, 1-1/2 in. IPS U X U, White
    1720C20 PVC True Union Swing Check Valve, 2 in. IPS U X U, Clear
    1720-20 PVC True Union Swing Check Valve, 2 in. IPS U X U, White
    1720C30 PVC True Union Swing Check Valve, 3 in. IPS U X U, Clear
    1720-30 PVC True Union Swing Check Valve, 3 in. IPS U X U, White
    1720C07 PVC True Union Swing Check Valve, 3/4 in. IPS U X U, Clear

    Specifications & Documents