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Check Valves

Check valves for fluids are a type of valves which allow fluids to flow in one direction, but automatically close when the flow reverses. They are also called non-return valves or one-way valves. They can prevent the backflow securely and open with small differential pressure. They are applied to piping systems where the backflow prevention is required, frequent open/close are expected, some restrictions exist around the pipings, etc. To install, there are screw-in connection type to screw in the check valve, and flangeless type that clamps the entire check valve with pipes. Furthermore, they are divided into small diameter valves or large diameter valves. Materials of the main body are copper alloy, stainless steel, fluoropolymer, plastic, etc. Sealing materials vary depending on the application; metal is used for places where the temperature becomes high due to steam, etc., and rubber is for places under low temperatures such as hot or cold water.
Days to Ship
  • All
  • Same day
  • 3 Day(s) or Less
  • 4 Day(s) or Less
  • 5 Day(s) or Less
  • 6 Day(s) or Less
  • 7 Day(s) or Less
  • 8 Day(s) or Less
  • 9 Day(s) or Less
  • 12 Day(s) or Less
  • 13 Day(s) or Less
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Brand
Product Series
Days to Ship
Applicable Fluid
Type
Material
Max. Operating Pressure(MPa)
Nominal Pressure
Supply Side, Connection Type
Supply Side, Plumbing Thread Nominal
Control Side, Connection Type
Control Side, Plumbing Thread Nominal
Supply Side, Tube Flange Nominal
Control Side, Tube Flange Nominal
Cracking Pressure(MPa)

    CS-4N Type Check Valve with Expansion/Contraction Pipe (for Cold/Hot Water)

      CS-1USN Type Check Valve (for Cold/Hot Water)

        CS-2USN Type Check Valve (for Cold/Hot Water)

          CS-3SSN, Check Valve (for Cold Water / Hot Water)

            CS-7N Type Check Valve (for Cold/Hot Water)

              Straight SMC Type JIS10K 

                Straight Type SM Type JIS10K 

                  Straight Type SM Type JIS20K 

                    Threaded SMG Type 10K Core Built-in Goods

                      Threaded SMG Type 10 K Screw-in

                        Straight Type SMF Model JIS10K Model

                        Brand

                        VENN

                        VENN

                        VENN

                        VENN

                        VENN

                        ISHIZAKI CO

                        ISHIZAKI CO

                        ISHIZAKI CO

                        ISHIZAKI CO

                        ISHIZAKI CO

                        ISHIZAKI CO

                        Product Series

                        CS-4N Type Check Valve with Expansion/Contraction Pipe (for Cold/Hot Water)

                        CS-1USN Type Check Valve (for Cold/Hot Water)

                        CS-2USN Type Check Valve (for Cold/Hot Water)

                        CS-3SSN, Check Valve (for Cold Water / Hot Water)

                        CS-7N Type Check Valve (for Cold/Hot Water)

                        Straight SMC Type JIS10K 

                        Straight Type SM Type JIS10K 

                        Straight Type SM Type JIS20K 

                        Threaded SMG Type 10K Core Built-in Goods

                        Threaded SMG Type 10 K Screw-in

                        Straight Type SMF Model JIS10K Model

                        Days to Ship 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 5 Day(s) or more 6 Day(s) or more 13 Day(s) or more 7 Day(s) or more 12 Day(s) or more 13 Day(s) or more
                        Applicable FluidWaterWaterWaterWaterWater / OthersWaterWaterWaterWaterWaterWater
                        TypeOthersOthersOthersOthersOthersOthersOthersOthersOthersOthersOthers
                        MaterialBronzeBronzeBronzeBronzeBronzeCast IronCast IronCast IronBrassBrassCast Iron
                        Max. Operating Pressure(MPa)111110.980.981.960.980.980.98
                        Nominal PressureNo Standard, OthersNo Standard, OthersNo Standard, OthersNo Standard, OthersNo Standard, Others10K10K20K10K10K10K
                        Supply Side, Connection TypeGGGRc (R)Rc (R)FlangeFlangeFlangeRc (R)Rc (R)Flange
                        Supply Side, Plumbing Thread Nominal1B1B1B3/4B1B ~ 3/4B---1B ~ 1 1/4B1 1/4B-
                        Control Side, Connection TypeRc (R)Rc (R)Rc (R)Rc (R)Rc (R)FlangeFlangeFlangeRc (R)Rc (R)Flange
                        Control Side, Plumbing Thread Nominal3/4B3/4B3/4B3/4B1B ~ 3/4B---1B ~ 1 1/4B1 1/4B-
                        Supply Side, Tube Flange Nominal-----1 1/2B ~ 10B1 1/2B ~ 6B1 1/2B ~ 6B--1B ~ 1 1/4B
                        Control Side, Tube Flange Nominal-----1 1/2B ~ 10B1 1/2B ~ 6B1 1/2B ~ 6B--1B ~ 1 1/4B
                        Cracking Pressure(MPa)-----------

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