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PUMC Home : Product Divisions : Preferred Utilities : Product

Tank Selector Valves

Application | Overview | Features | Specification

The Tank Selector Valves eliminate the potential overflow hazard inherent in pumping from one tank while returning to the other tank.

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Tank Selector Valve - Flanged
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Tank Selector Valve - Flanged

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  • Application
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Instead of a confusing array of hand valves, the Preferred Tank Selector Valves provide a simple and efficient way to select one of two fuel oil storage tanks.  Movement of a single lever transfers both the supply and return lines from one tank to the other while providing an uninterrupted path for supply to the pump set and return from the loop. The Tank Selector Valve eliminates the potential overflow hazard inherent in pumping from one tank while returning to the other tank.  It also eliminates the danger of blocking the return path from relief valves and positive displacement pumps while changing tanks.
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  • Overview
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Operation: The Preferred Tank Selector Valve consists of a precision ground tapered plug which rotates 90 degrees within a precision machined cast iron body.  The valve is designed so that there is no “blind spot” between the two end positions which would block all flow to or from the tanks.  To change tanks, the operator loosens the plug, swings the handle to the opposite position, and re-tightens the plug to ensure the tightest possible seal between the supply and return side of the valve.

Construction: Standard valve construction consists of a cast iron plug within a cast iron body.  Nuts running on threaded studs are used to tighten the plug.

Optional: An electric actuator can also be mounted on top of the valve to provide automatic lever movement (cannot be done on valves with lifting jacks).  Optional plug materials include Sure-tite, Teflon coated cast iron, and bronze (Sure-tite and Teflon coated cast iron plugs are only available on 1¼" and larger valves).  These plug construction options include a lifting jack arrangement on 1¼" and larger valves which, simplifies adjustment of the plug to body fit.  The lifting jack allows the valve plug to be loosened easily prior to rotating the tank selection lever, and to be tightened after the selection is made. These optional plug constructions allow a tighter seal between the supply and return lines, and between the two tank circuits. 

Caution: The Tank Selector Valve should be applied in applications where slight leakage from the return piping to the suction piping is not objectionable.  On applications utilizing intermittent pumps, care should be taken that the return connections at the valve remain flooded during the pump “off” cycle to prevent the inspiration of air into the suction line from the return side of the valve.  If the return connections cannot remain flooded, it is recommended that the Sure-tite option with lifting jack be used. Valve stem packing prevents the inspiration of air into the piping from outside the valve.

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  • Features
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Standard valve construction consists of a cast iron plug within a cast iron body. Nuts running on threaded studs
(see photo) are used to tighten the plug. Optional plug materials include Sure-tite, Tefl on coated cast
iron, and bronze (Sure-tite and Tefl on coated cast iron plugs are only available on 1¼" and larger valves). These plug construction options include a lifting jack arrangement on 1¼" and larger valves which, simplifies adjustment of the plug to body fit. The lifting jack allows the valve plug to be loosened easily prior to rotating the tank selection lever, and to be tightened after the selection is made. These optional plug constructions allow a tighter seal between the supply and return lines, and between the two tank circuits. 

  • With Threaded Or Flanged Connections
  • Cast Iron Body (Standard)
  • Optional Electric Actuator Available
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  • Specification
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Furnish and install Tank Selector Valve for manifolding the fuel oil storage tanks.  Valve shall incorporate six (6) valve connections in a common casting with a single operating lever for tank selection and visible indication of tank use.  The selector valve for the transfer set shall be manually operated.  A “Sure-tite” plug material shall be supplied to prevent loss of pump set prime.  Refer to the mechanical drawings for piping arrangement. The valve shall be a Preferred Utilities Manufacturing Corporation, Danbury, CT, Tank Selector Valve.
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