Overflow Prevention Valve Model 61F

The Model 61F-Stop overfill prevention valve provides a mechanical method of positive fuel oil shut-off to
prevent overfilling of above ground storage tanks during a pressurized fill (pump-in fill) delivery. “The stopper” threads into the fill opening and is an integral part of the fill tube. The Preferred 61F-Stop is fully adjustable to allow for easy installation in new or existing aboveground tanks of various heights and storage capacities.

  • Overview
  • Specifications
  • Ordering Information
  • Documents
Overview

The Model 61F-Stop overfill prevention valve provides a mechanical method of positive fuel oil shut-off to prevent overfilling of above ground storage tanks during a pressurized fill (pump-in fill) delivery. “The stopper” threads into the fill opening and is an integral part of the fill tube. The Preferred 61F-Stop is fully adjustable to allow for easy installation in new or existing aboveground tanks of various heights and storage capacities.

Operation
The stopper is a single-action, complete shut-off valve.
When the liquid level rises to the specified tank capacity,
the valve mechanism is released and automatically stops
the flow of the product. Any excess product left between
the valve and the fuel delivery coupler is drained into the
tank through internal drain vents. The drain vents on the
61F-Stop act as an anti-siphon device, by introducing air/
vapor into the fill line and thereby preventing the tank from
being exposed to a siphon condition, resulting from a broken
or leaking fill pipe. Minimum flow of 25 GPM is required for
valve to function properly.

Specifications


Valve Body: Cast aluminum
Float: Closed-cell Buna-N
Poppet: Cast aluminum, hard coated
Cam: Stainless steel
Follower: Brass
Shaft: CRS zinc plated
Bearing: Sintered bronze

Ordering Information

P/N: 61-FStop

Description:Overfill Prevention Valve, Above Ground Tank, Pumped in Unit

Documents

Overflow Prevention Valve Model 61 Specification

Overflow Prevention Valve Model 61Cutsheet