PISTON CONTROL VALVES / BV88 DIGITAL CONTROL VALVE

BV88 DIGITAL CONTROL VALVE

The Model BV88 Digital Control Valve is designed to provide precise flow rate control and batch delivery of fluid products when used with an electronic batch control device. The valve is controlled by the electronic preset for low flow start up, high flow rate control, low flow shutdown, and final shut-off. The BV88 also helps achieve maximum flowmeter accuracy by maintaining a constant flow rate regardless of varying line pressures. The Model BV88 features an external pilot control loop that consists of a normally-open solenoid pilot, a normally-closed solenoid pilot, strainer, and opening/closing speed controls.

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TECHNICAL SPECIFICATIONS

Valve Size 2″ 3″ 4″ 6″ 8″ 12″
Dimensions
[flange to flange]
150 # inches 10 1/4 11 13 17 22 1/2 30 7/8
mm 260 279 330 432 571 784
Dimensions
[flange to flange]
300 # inches 13 1/8 14 1/2 17 7/8 23 1/2
mm 333 368 454 597
Capacity Cv-gpm 90 190 315 700 1300 2950
Pressure
Approvals
150 # SEP SEP SEP CRN, PED CRN, PED CRN, PED
300 # PED PED PED — —
CHECK VALVE FUNCTIONALITY

The valve piston spring, biased to the closed position, has equal front and rear surface areas. This means that every Brodie Model BV valve has check valve functionality, with bubble-tight shut-off – no additional system check valve is required to prevent reverse flow. The valve will only open when upstream pressure is sufficient to overcome spring force.

BRODIE VS DIAPHRAGM VALVES

There are many advantages in using piston-operated control valves as opposed to diaphragm-operated valves, including:

  • High flow capacity – lower pressure drop
  • Optimum control at low flow gives better batching control
  • Simple O-ring sealing – no special diaphragms
  • Alternative O-rings easily obtainable per product specifications
Designed to meet the challenges for today’s petroleum and environmental needs, Brodie’s positive sealing and linear action control valves provide uniform speed of response and leak-proof performance.

REDUCED COST OF OWNERSHIP

  • Long service life, only one moving part
  • Cylinder can be removed without removing body from the line
  • Cylinder assemblies available as replacement kits

SECURITY & CONTROL

  • Automatic shutoff for emergency protection
  • Pressure monitoring at all times

UNIFORM SPEED OF RESPONSE
Flow modulation avoids delayed response and valve slam.

  • Pilot operated
  • Positive Sealing/Zero Leakage
  • Modular construction/easy inline service
  • Adjustable opening and closing speeds – prevents damaging shock pressure
  • Linear action control for uniform fast speed of control
  • Simple design without diaphragms
  • Common valve body and internal mechanism simplifies spare parts inventory
  • Multiple control functions can be performed with one valve