The BV88 Series Digital Control Valves are designed to provide precise flow rate control and batch delivery of fluid products when used with electronic batch control devices. The valve is controlled by the electronic preset for low flow start up, high flow rate control, low flow shutdown, and final shut-off. This also provides for maximum flow-meter accuracy by maintaining a constant flow rate with 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.
Design Features
- Precision flow rate and batch control
- Modular construction -all internal parts including seat ring can be removed with the cylinder assembly without disturbing line connections
- No diaphragms or stuffi ng boxes
- 45° body design assures high capacity
- Positive shut-off
- Linear control characteristics with uniform response speed
- Automatic check valve - no reverse fl ow
- Fail-safe closes on loss of electrical power
- Characterized ports for better low fl ow response
Materials of Construction
Main Valve Body: Steel-ASTM-A216-GR-WCBMain Valve Cylinder: 17-4 Stainless Steel, Heat Treated
Main Valve Piston: Stainless Steel
Seat Ring: Stainless Steel
O-Rings: Viton Standard, Flouro Silicate (Ethanol)
Other Internal Parts: Stainless Steel
Pilot Valve Strainer/Needle Valve Strainer: Standard: Steel
Tubings and Fittings: Standard: Steel
Equipment
Standard
- Opening and closing speed controls
- Self-cleaning strainer (Pilot Inlet)
- Stainless steel solenoid pilots
Optional
- Manual Override
- Thermal Relief
