Double Wall Day Tanks - OSP Approved

Preferred double-walled day tanks provide a local supply of distillate or diesel fuel for boilers, emergency generators, or other stationary engine-driven or oil-fired equipment. Available from 60 to 500-gallon capacities, a properly sized day tank may be selected per individual job. These Preferred day tanks are sized to fit through a 36” wide passageway. Each day tank unit includes all necessary pipe connections, manual fill port, and tank gauge, along with a variety of optional accessories.

  • Complete primary and secondary tank and instrumentation package.

  • 36” interior Doorway accessible.

  • Built to U.L. 142 standards.

  • OSHPD certified. Cert # OSP-0784.

  • With its high strength and heavy-duty construction, series DT-OSP day tanks cut manufacturing time and cost while maintaining Preferred’s quality and customer service.

  • Overview
  • Application
  • Specifications
  • Documents
Overview

The Model DT-OSP  Double Wall Day Tanks provide a local supply of distillate or diesel fuel for boilers, emergency generators or other stationary engine driven or oil fired equipment.  Available from 60 to 500 gallon capacities, a properly sized tank may be selected per individual job.  For maximum fuel capacity in a minimum space, Preferred Day Tanks are rectangular in shape. Each Day Tank unit includes all necessary pipe connections, manual fill port, and tank gauge, along with a variety of optional accessories.

  • Includes Secondary Tank And Instrumentation.
  • 60 to 500 gallon Capacity Range.
  • UL Approved, NFPA 30 compliant, OSHPD/HCAI certified.

 

   

Application

For mission critical applications such as emergency diesel generators and dual-fuel boilers, it is recommended that at least four hours worth of fuel is immediately available to the unit without activating transfer pumps.

Specifications

Primary Tank Specifications

 

Mounting Base:  Structural Steel Channel

Metal Thickness:  10 Gauge steel

Exterior Finish: Chemical Resistant Gray Enamel, Rust Resistant Primer

 

Manual Fill Port: 2" NPT

 

Pipe Connections: Tank Fill, Engine Fuel Return, Return Pump Port, Engine Fuel Supply, Plugged Drain.

 

Vent Connections: Top Mounted; 2", all sizes

 

Emergency Vent Connections: Top Mounted; 3", 60-200 Gallon, 4",  300-500 Gallons.

 

Drain: Plugged 1" NPT Coupling

 

Approvals / Compliance:  UL Approved, NFPA 30 compliant, OSHPD/HCAI certified.

Secondary Tank Specifications

 

Mounting Base: Structural Steel Channel

Metal Thickness: 10 Gauge steel

Exterior Finish: Chemical Resistant Gray Enamel Finish, Rust Resistant Primer.

 

Containment: 110% minimum Of Tank Capacity Standard

 

Leak Detector:  Preferred RBS Float Switch

 

 

Vent Connections: Top Mounted; 2" all sizes

 

Emergency Vent Connections: Top Mounted; 3",  60-200 Gallon; 4",  300-400 Gallons; 6”, 500 Gallons

 

Drain: Plugged 1" NPT Coupling

 

Approvals / Compliance:  UL Approved, NFPA 30 compliant, OSHPD/HCAI certified

 

 

Optional Equipment 

  • Return pump: 8 or 20 gpm. 
  • Temperature probe (in Continuous Level Probe) 

FSC-based control enclosure (cannot be tank mounted)

Secondary Tank Specifications

 

Mounting Base: Structural Steel Channel

Metal Thickness: 10 Gauge steel

Exterior Finish: Chemical Resistant Gray Enamel Finish, Rust Resistant Primer.

 

Containment: 110% minimum Of Tank Capacity Standard

 

Leak Detector:  Preferred RBS Float Switch

 

 

Vent Connections: Top Mounted; 2" all sizes

 

Emergency Vent Connections: Top Mounted; 3",  60-200 Gallon; 4",  300-400 Gallons; 6”, 500 Gallons

 

Drain: Plugged 1" NPT Coupling

 

Approvals / Compliance:  UL Approved, NFPA 30 compliant, OSHPD/HCAI certified


 

Documents

Double Wall Day Tanks-OSP Approved Spec

Double Wall Day Tank- ASP Approved Revit Files

Double Wall Day Tank-OSP Cutsheet

Double Wall Day Tank-OSP Diagram Sheet