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Check Valves

  • 1/2" Solder Ends Swing Check Valve, Lead Free Product Image
    1/2" Solder Ends Swing Check Valve, Lead Free
    SKU: SCS050
    Brand: Bluefin
    (25)
    $5.59 each
    $56.28 box of 12
    $4.69 each
    552
    Fri, Aug 30
    552
    QtyArrives
    552 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3/4" Solder Ends Swing Check Valve, Lead Free Product Image
    3/4" Solder Ends Swing Check Valve, Lead Free
    SKU: SCS075
    Brand: Bluefin
    (25)
    $7.99 each
    $80.28 box of 12
    $6.69 each
    213
    Fri, Aug 30
    213
    QtyArrives
    213 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1" Solder Ends Swing Check Valve, Lead Free Product Image
    1" Solder Ends Swing Check Valve, Lead Free
    SKU: SCS100
    Brand: Bluefin
    (25)
    $12.19 each
    $50.95 box of 5
    $10.19 each
    203
    Fri, Aug 30
    203
    QtyArrives
    203 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1-1/4" Solder Ends Swing Check Valve, Lead Free Product Image
    $18.99 each
    $63.16 box of 4
    $15.79 each
    47
    Fri, Aug 30
    47
    QtyArrives
    47 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1-1/2" Solder Ends Swing Check Valve, Lead Free Product Image
    $26.79 each
    $111.45 box of 5
    $22.29 each
    84
    Fri, Aug 30
    84
    QtyArrives
    84 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 2" Solder Ends Swing Check Valve, Lead Free Product Image
    2" Solder Ends Swing Check Valve, Lead Free
    SKU: 210C002-NL
    Brand: Everflow
    (3)
    $38.99 each
    $111.87 box of 3
    $37.29 each
    6
    Fri, Aug 30
    6
    QtyArrives
    6 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3" Solder Ends Swing Check Valve, Lead Free Product Image
    3" Solder Ends Swing Check Valve, Lead Free
    SKU: 210C003-NL
    Brand: Everflow
    $135.99 each
    Mon, Sep 16 – Mon, Sep 23
    Arrives
    Mon, Sep 16 – Mon, Sep 23
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
  • 4" Solder Ends Swing Check Valve, Lead Free Product Image
    4" Solder Ends Swing Check Valve, Lead Free
    SKU: 210C004-NL
    Brand: Everflow
    $194.99 each
    Mon, Sep 16 – Mon, Sep 23
    Arrives
    Mon, Sep 16 – Mon, Sep 23
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
  • 1/2" Threaded Swing Check Valve, Lead Free Product Image
    1/2" Threaded Swing Check Valve, Lead Free
    SKU: 210T012-NL
    Brand: Everflow
    (3)
    $8.39 each
    $95.88 box of 12
    $7.99 each
    3
    Fri, Aug 30
    3
    QtyArrives
    3 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3/4" Threaded Swing Check Valve, Lead Free Product Image
    3/4" Threaded Swing Check Valve, Lead Free
    SKU: 210T034-NL
    Brand: Everflow
    (3)
    $11.99 each
    $131.88 box of 12
    $10.99 each
    2
    Fri, Aug 30
    2
    QtyArrives
    2 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1" Threaded Swing Check Valve, Lead Free Product Image
    1" Threaded Swing Check Valve, Lead Free
    SKU: SCT100
    Brand: Bluefin
    (21)
    $11.89 each
    $98.90 box of 10
    $9.89 each
    23
    Fri, Aug 30
    23
    QtyArrives
    23 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1-1/2" Threaded Swing Check Valve, Lead Free Product Image
    1-1/2" Threaded Swing Check Valve, Lead Free
    SKU: SCT150
    Brand: Bluefin
    (21)
    $27.99 each
    $116.45 box of 5
    $23.29 each
    7
    Fri, Aug 30
    7
    QtyArrives
    7 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 2" Threaded Swing Check Valve, Lead Free Product Image
    2" Threaded Swing Check Valve, Lead Free
    SKU: SCT200
    Brand: Bluefin
    (25)
    $38.39 each
    $95.97 box of 3
    $31.99 each
    1
    Fri, Aug 30
    1
    QtyArrives
    1 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 2-1/2" Threaded Swing Check Valve, Lead Free Product Image
    2-1/2" Threaded Swing Check Valve, Lead Free
    SKU: 210T212-NL
    Brand: Everflow
    (3)
    $87.99 each
    11
    Fri, Aug 30
    11
    QtyArrives
    11 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3" Threaded Swing Check Valve, Lead Free Product Image
    3" Threaded Swing Check Valve, Lead Free
    SKU: 210T003-NL
    Brand: Everflow
    $138.99 each
    1
    Fri, Aug 30
    1
    QtyArrives
    1 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 4" Threaded Swing Check Valve, Lead Free Product Image
    4" Threaded Swing Check Valve, Lead Free
    SKU: 210T004-NL
    Brand: Everflow
    $184.99 each
    1
    Fri, Aug 30
    1
    QtyArrives
    1 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3" Bronze Swing Check Valve Product Image
    3" Bronze Swing Check Valve
    SKU: 61Y21001
    Brand: Apollo Valves
    $745.99 each
    Mon, Sep 16 – Mon, Sep 23
    Arrives
    Mon, Sep 16 – Mon, Sep 23
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
  • 1-1/4" Threaded Swing Check Valve, Lead Free Product Image
    1-1/4" Threaded Swing Check Valve, Lead Free
    SKU: 210T114-NL
    Brand: Everflow
    (3)
    $21.69 each
    $83.16 box of 4
    $20.79 each
    Mon, Sep 9 – Wed, Sep 11
    Arrives
    Mon, Sep 9 – Wed, Sep 11
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
  • 1/2" Threaded Spring Loaded Check Valve,<br>Lead Free Product Image
    1/2" Threaded Spring Loaded Check Valve, Lead Free
    SKU: 150T012-NL
    Brand: Everflow
    (6)
    $8.99 each
    $128.85 box of 15
    $8.59 each
    Wed, Sep 11 – Mon, Sep 16
    Arrives
    Wed, Sep 11 – Mon, Sep 16
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
  • 1/2" Sweat Spring Loaded Check Valve, Lead Free Product Image
    1/2" Sweat Spring Loaded Check Valve, Lead Free
    SKU: SLCS050
    Brand: Bluefin
    (29)
    $6.99 each
    $58.90 box of 10
    $5.89 each
    225
    Fri, Aug 30
    225
    QtyArrives
    225 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3/4" Threaded Spring Loaded Check Valve,<br>Lead Free Product Image
    $9.19 each
    $92.28 box of 12
    $7.69 each
    378
    Fri, Aug 30
    378
    QtyArrives
    378 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 3/4" Sweat Spring Loaded Check Valve, Lead Free Product Image
    3/4" Sweat Spring Loaded Check Valve, Lead Free
    SKU: SLCS075
    Brand: Bluefin
    (29)
    $9.99 each
    $84.90 box of 10
    $8.49 each
    333
    Fri, Aug 30
    333
    QtyArrives
    333 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1" Threaded Spring Loaded Check Valve<br>Lead Free Product Image
    1" Threaded Spring Loaded Check Valve Lead Free
    SKU: SLCT100
    Brand: Bluefin
    (29)
    $11.89 each
    $98.90 box of 10
    $9.89 each
    666
    Fri, Aug 30
    666
    QtyArrives
    666 Fri, Aug 30
    Questions? Call 1-888-757-4774
  • 1" Sweat Spring Loaded Check Valve, Lead Free Product Image
    1" Sweat Spring Loaded Check Valve, Lead Free
    SKU: SLCS100
    Brand: Bluefin
    (29)
    $14.39 each
    $73.14 box of 6
    $12.19 each
    212
    Fri, Aug 30
    212
    QtyArrives
    212 Fri, Aug 30
    Questions? Call 1-888-757-4774

Resources

Articles

  • A check valve ensures that water only flows in a single direction of a plumbing system. This prevents contaminated water from flowing back into the system once it has been used. The most common type of check valve is the swing check. A swing check is a type of valve that contains a hinged panel that opens and closes as liquid flows through it. When liquid enters a swing check, pressure increases and the hinged panel is lifted. This allows the liquid to flow through and exit the system. The check valve's hinge serves as a one way street and liquid cannot flow through in the opposing direction.

    The average home plumbing system operates between 35 to 55 psi, depending on the pressure regulator's setting. If the street pressure falls below the house pressure, water will flow back into the city system. A check valve prevents this from happening. Check valves are also commonly used in sump, pond, and sewage pump applications. They are also used in closed loop solar applications to prevent thermal siphoning. Check valves should be installed horizontally in a plumbing system.

    If vertical installation is required, a Spring Loaded Check Valve is recommended.

    Hydrovalve check valves are available in two standard connection types: Female Threaded (IPS) or Sweat (CxC). 1/2" and 3/4" check valves are the most common sizes sold on our website, however sizes are available from 1/2" to 4".
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