V-Notch Ball Valves Series 310

The V–Notch Ball Valve gives non-clogging, high capacity, straight through flow control of fluids containing pulp and paper stock or slurries and fluids containing suspended solids or fibrous materials.

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Specification Document

Design Features

  • Shearing effect between the ball and seal ensures tight shut-off, even on fibrous slurries.
  • The unrestricted, straight through flow design provides high capacity and wide rangeability.
  • Precise contouring of the V-notch balls provides a nearly equal percentage characteristic.
  • Replaceable ball seal and back up ring for added rigidity.
  • Ball machined to a super smooth finish, hard-chrome plated and polished to increase ball seal life.
  • High CV to body size ratio.

About V-Notch Ball Valves

The V–Notch Ball Valve gives non-clogging, high capacity, straight through flow control of fluids containing pulp and paper stock or slurries and fluids containing suspended solids or fibrous materials.

The V- Notch Ball Valves are offered squared and clamped driven shaft plus ball shaft with splined connection designed for zero lost motion for highly accurate positioning and precise control.

Product Specifications

Design CodeBS 5351
Valve Size25 to 200 mm (1” to 8”)
RatingANSI 150 and 300
End ConnectionFlanged
F/F DimensionsANSI B-16.10
Flow CharacteristicApprox. Equal Percentage, Linear, On-Off
Body MaterialCarbon Steel, Stainless Steel
Ball MaterialStainless Steel
Seat RingPTFE, Carbon Filled Teflon
Ball RingCF8M, Alloy Steels
GasketPTFE, Graphite Laminate
Gland PackingPTFE Chevrons, Graphite, Low Emission
Actuator FormDiaphragm, Piston, Electric
Actuator TypeRotary
DiaphragmNitrile / Neoprene (nylon reinforced)
Spring Range3 – 15 Psig (0.2 – 1.0 Kg/cm2) 6 – 30 Psig (0.4 – 2.0 Kg/cm2)
Air Supply20 – 35 Psig (1.4 – 2.5 Kg/cm2)
Air Connection1/ 4” or 1/ 2” NPT
AccessoriesValve Positioners (Pneumatic, Electro-Pneumatic, Smart), Instruments (Airset, Solenoid Valve, Volume Booster, Airlock, Limit Switches)
FeaturesTop Mounted Hand Wheel, Side Mounted Hand Wheel, Limit Stops Removable Blind Head, Steam Jacketing

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