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Series 65FC Basic Valve

Series 65FC Basic Valve

The OCV Basic Control Valves 65 Globe and 65 Angle are full port engineered valves. When equipped with a variety of pilots and accessories, these valves perform a wide range of automatic fluid control, making them specified valves in municipal water, fire protection, irrigation, industrial, petroleum and aviation fueling systems.

The Model 65 is dependable and hard working; with a simplicity of design that ensures minimal part wear for exceptional performance and longevity.

Self-contained, the valve operates automatically off of line pressure.

The 65 consists of three major components: body, bonnet and diaphragm assembly.

ModelModel SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
Model 65FC Basic Deluge Valve PDF Logo PDF Logo

Valve Features

  • Operates automatically off line pressure
  • Throttling seat retainer for flow and pressure stability
  • Diaphragm assembly guided top and bottom
  • Heavy duty nylon reinforced diaphragm
  • Rectangular –shaped, soft seat, provides drip tight class VI closure
  • Easily maintained without removal from the line
  • Diaphragm replaced without removal of internal stem assembly
  • Replaceable seat ring
  • Alignment pins assure proper reassembly after maintenance
  • Valves factory tested, serial numbered and registered

Valve Operation

valve closed

Valve Closed

When line pressure from the valve inlet is applied to the cover chamber, pressuring the diaphragm, the valve is closed drip-tight.

valve open

Valve Open

When diaphragm chamber pressure is vented, the valve travels to the full open position.

valve modulating

Valve Modulating

The valve is between full open and closed. The valve’s control pilot modulates the pressure in the diaphragm chamber, positioning the valve to control the desired pressure or flow. OCV pilot systems provide accurate control in a wide range of performance requirements.


flow characteristics


Material Specifications




NOTE: Model 127-3FC consult factory for dimensions, do not use this chart unless instructed.

A routine inspection & maintenance program should be established and conducted yearly by a qualified technician. Consult our factory @ 1-888-628-8258 for parts and service.



When ordering please provide: – Series Number – Valve size – Globe or Angle – Pressure Class – Screwed, Flanged, Grooved – Trim Material – Adjustment Range – Pilot Options – Special needs / or installation requirements.