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Item # item-1103, Series 3330 Altitude Control Valve

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The elevated tank, standpipe or storage reservoir is a common and important element found in many water distribution systems: municipal, fire protection, commercial, military and industrial The function of the OCV Series 3330 Altitude Control Valve is accurate, automatic level control, without the use of floats or sensors. Pilot controls for the series can accommodate storage facilities up to 230 feet high, maintaining the liquid level to within inches of a predetermined set point.

The series is offered in two basic types. The Model 3331 one-way flow is used for tank fill only. The Model 3333 allows flow both into and out of the tank.
  • Consistently maintains water level to within inches of set point in tank/reservoirs from 5 to 230 ft high.
  • Installs at the "base of tank
  • Operates hydraulically without need for a tank-mounted float or electrical controls or sensors.

Specifications  · Approvals


Flange Standard

ANSI B16.42

Flange Class

150 lbs

Flange Face


Maximum Working Pressure

250 psi


Altitude Control






Series-3330 Specifications and Dim.
(PDF, 793KB)

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