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Model B-5 (Horizontall 3 - 12") – Y Pattern Configuration PDF E-mail
Introduction
The Bailey Valve model B-5 sleeve valve has been designed to incorporate features that provide superior valve performance for inline flow control and pressure reduction applications.  Typical applications for the model B-5 are water treatment plant flow control, pump control, tank level control, metering vaults, reservoir discharge and ground water recharge. The Bailey model B-5 valve dissipates energy and controls flow by diverting the water path through a perforated movable sleeve. The valve modulates by sliding the sleeve through a seat ring to expose varying amount of nozzle area. The sleeve is designed with multiple sized and spaced tapered nozzles for each specific project and possesses a 1:1 stroke to diameter ratio for high turndowns. This design controls cavitation by directing damaging implosions away from any metallic surfaces, thus reducing vibration and noise normally associated with modulating valves. The nozzles are placed within the sleeve in a helical pattern that allows for specifically desired incremental volume change with movement of the sleeve. Each sleeve nozzle configuration is designed for the application needs to produce superior flow and pressure control over the entire requested flow range. Flow passes through tapered nozzles in the sleeve and energy is dissipated during a mixing process in the center of the valve..  The advance and retract movement of the sleeve is accomplished through a drive screw or hydraulic cylinder located on the top of the valve. The Bailey Valve model B-5 is capable of flowing from 20 GPM to 10,600 GPM.

Standard Materials:

Valve Body:  Epoxy Coated Ductile Iron
Sleeve:  304 or 316 Stainless Steel
Seat Ring:  Stellite Hardfaced 304 or 316 Stainless Steel
Seals:  Buna-N

Pressure Class:

ANSI B16.42
Class 150  => 250   PSI
Class 300  => 640   PSI
Class 600  => 1000 PSI

Size Range:

3” (80mm) through 12” (300mm)

Product Category:

Y Pattern – Inline w/ Pipe Discharge

Features:

  • Offer 1:1 Stroke to Diameter Ratio
    • Provides better flow control over short stroke configuration by increasing the sleeve nozzle spacing
    • Reduces the risk of oscillating the gate on the seat under low flow and high delta P condition
    • Allows for more cavitation dissipation inside valve compared to shorter stroke valves
    • Reduces vibration by spreading discharge energy over broader range compared to shorter stroke valves
    • High flow turndown allows the use of one valve in lieu of multiple parallel valves and eliminates oscillation off the seat for most applications
  • Stellite Hardfaced Seat Ring
    • Provides superior hard surface edge to reduce high velocity erosion of the gate
    • Creates dissimilar hardness in non-bound mating materials
    • Provides leading edge hardness sufficient to shear debris within the nozzle
  • Actuation Configurations
    • Electric Motor Operated
    • Oil Hydraulic Operated W/ Hydraulic Power unit
  • Valve Function
    • Pressure reduction
    • Pressure sustaining
    • Flow Control
 
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