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Daniel V707 Spring Loaded Back Pressure Control Valve
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The V707 Spring Loaded Back Pressure Valve offers an innovative way to maintain back pressure and provides an integrated check functionality combining two valves in one, requiring no pilots or external actuation.
The V707 is an addition to the Daniel 700 Series Control Valve family of products, applying the well-known and trusted Daniel Control Valves technology to maintain back pressure.
Daniel V707 Spring Loaded Back Pressure Control Valve

Specs

Flange connections
Valve size: 2” to 4”
Maximum working pressure at 100 °F
  • 285 psi (1,964 kPa)

  • 740 psi (5,099 kPa)

  • 1,480 psi (10,197 kPa)

    • Temperature Range: -20°F to 150 °F (-29°C to 66°C)
    Materials of Construction
    Valve body: Carbon steel
    ASTM-A352-GR-LCC
    Cylinder: 17-4 stainless steel
    Piston: 304 stainless steel
    Seat Ring: 303 stainless steel
    Elastomers: Viton®
    Spring: Chromium silicone (877 Grade A)
    (877 Grade A) springs
    Tubing and fittings: 316 stainless steel*
    *Pressure sensing line needed to perform check valve functionality. Not a pilot line
    Spring Ranges
    Field adjustable, valve differential pressure range
  • Range #1: 5 - 40 psi (single light spring)

  • Range #2: 30 - 80 psi (single heavy spring)

  • Range #3: 30 - 120 psi (light and heavy, nested springs)
    • Selection Requirements
    1. Line Size
    2. Pressure
    3. Temperature
    4. Set Point Pressure*
    5. Flange Connections
    *Note: Set point is used to determine spring range.
    Customer will need to adjust set point in the field.

    Features

    • No power required
    • No diaphragms or stuffing boxes
    • Modular construction: all internal parts, including seat ring, can be removed with the cylinder assembly without disturbing line connections
      *Line must be drained and valve must be isolated for service.
    • 45° body design assures high capacity
      Positive shut-off, ANSI Leakage Class VI (ANSI B16.105 – 1976)
    • Inherently check valve functionality
      Metal-to-metal seat with protected o-ring
    • Full working pressure (ANSI 150, 300 and 600)
    • Pilotless
    • Tamper-proof set point locking capable