STS Series

The STS Packaged Design Day Tank Series represents a transformation from a build-to-order product to an inventory based product. Based upon over 50 years of experience with day tank systems, beginning with the innovation of the first packaged day tank systems in the 1960’s, Simplex has developed a new design which allows integration of over 150 options into a standard, inventory-based package. Likewise, drawings have been transformed to reduce submittal lead times to days. The result is the job-specialized product that owners want with the fit and finish of a standard, high volume product.

We are experts at building products that meet our customer's exact requirements. Contact Simplex if your job specifications require additional options or considerations.

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Modular construction to adapt wide ranging requirements to a standard product.
Modular design transforms from build-to-order to inventory based delivery.
1 week submittal drawings, standard configurations.
Shipment from inventory 5 weeks, standard configurations.
10-25-60-75-100-150-200-300-400 gallons stock models. Intermediate and larger models available.
UL142 secondary containment (double wall).
UL508A integrated controller.
Freestanding, pad-mountable, indoor (standard) or outdoor (optional).
Integrated single or duplex fill or return pumps 2-25 gpm, .33-1.5 hp.
Backed by Simplex renowned engineering capability and nationwide service.

Capacities	10, 25, 60, 75, 100, 150, 200, 300, 400 Gallons
Product	Class II Liquid, > 100°F Flash Point
Control	UL508A Integrated Controller
Pumps	2-25 GPM, 0.33-1.5 HP
Construction	UL142 secondary containment tank (double-wall) Suitable for indoor (standard) or outdoor (optional) installation
Finish	Simplex Carolina Vermillion (Tank) Simplex Coastal Haze (Controller)

Note: We are experts at building products that meet our customer's exact requirements. Contact Simplex if your job specifications require additional options or considerations.

Mechanical	Option 015, Auxiliary Hand Pump, is recommended for installation on all Day Tanks equipped with motor-pumps. The hand pump is used for initial priming of the fuel line from the main tank and as a backup to the motor-pump.Option 060, 062 Fuel Strainer, is recommended whenever there is a possibility of fuel contamination. Day Tank pumps have extremely close tolerances. Fine abrasives in suspension degrade pumping ability and can jam pump.In order to assure maintenance of pump prime, one of the following options is recommended for installation on all Day Tanks equipped with motor-pumps: Option 070: Check valve; Option 080, 083: Solenoid valve; or Option 090: Foot valve.OPT - Description015 - Auxiliary hand pump, 20 gallons per 100 strokes, 1" NPT (Side mounted)025 - Locking manual fuel fill cap060 - Fuel strainer062 - Duplex strainer063 - Vent cap064 - Emergency vent065 - Drain hand valve070 - Check valve080 - Solenoid valve083 - DC Solenoid Valve087 - Manual fuel shut-off valve, bronze088 - Manual fuel shut-off valve, fire-rated090 - Foot valve093 - Fusible link valve095 - Pressure relief valve100 - Pressure gauge101 - Vacuum gauge103 - Flow gauge in line with pump, to 29 GPM104 - Ball motion flow indicator105 - Temperature gauge120 - Extra 1" pipe connection125 - Extra drop tube130 - Oversize pipe connections, 1 1/4" to 2 1/2" NPT131 - Oversize pipe connections, 3” to 6” NPT140 - Special paint colors180 - Weatherproof modification192 - Containment drain hand valve
Control Devices and Alarms	OPT - Description 191 - Float switch in rupture basin with alarm (STS standard) 212 - Digital level indicator for local or remote installation 214 - Digital fuel flow indicator 215 - Mechanical dial level gauge 260 - Disconnect switch 261 - System circuit breaker 262 - Control power transformer 265 - Immersion heater 270 - Power available green pilot light 280 - Operation mode selector 285 - Loss of flow alarm 299 - Auxiliary relay 326 - Critical High level cut-out 329 - Low fuel level red light 333 - Critical low fuel alarm 334 - Alarm horn 340 - Running Pump amber light 376 - Manual reset, normally open solenoid valve 377 - Siphon-break solenoid valve 378 - Anti-siphon valve, 2" 383 - Automatic pump-out conversion 390 - Fuel rise pump-out control
Duplex Pump Systems	Duplex pump options are used to increase the reliability of a day tank system through the addition of a second, backup pump and level control. In a duplex system, one pump is designated the “lead” pump and the other is the “lag” pump. The lead pump automatically refills the day tank over the tank’s normal operating range of 50% to full. Normally, once the tank has been initially filled, the fuel level should never drop below 50%. Less than 50% is indicative of either a failure of the lead pump or consumption in excess of pump capacity. The lag pump and its separate level controller, acting as a backup senses a drop in fuel level below 50% and starts the lag pump, which then continues to run, along with the lead pump, until the tank is full. When ordering, remember that duplex systems include two motor-pumps and therefore require a quantity of two of any option related to the motor or pump, such as solenoid valves, strainers, etc. OPT - Description 345 - Duplex pump controller 346 - Two running time meters 349 - Basic PLC based level and duplex pump controller (replaces analog controller)
Fuel Oil Coolers (Installed in Return Line)	OPT - Description 396 - Radiator, fan, motor, flow switch, and control panel, installed and wired on day tank
Pumps (HP is minimum motor size)	Series XL Pumps (cast aluminum) OPT - Description 399 - 2 GPM, 1/3 HP (standard) 404 - 4 GPM, 1/3 HP with lip seal 407 - 7 GPM, 1/2 HP with lip seal 410 - 10 GPM, 3/4 HP with lip seal 417 - 17 GPM, 1 HP with lip seal 425 - 25 GPM, 1 1/2 HP with lip seal Cast Iron with Lip Seal OPT - Description 502 - 2 GPM, 1/3 HP 505 - 5 GPM, 1/3 HP 507 - 7 GPM, 3/4 HP 510 - 10 GPM, 1 1/2 HP 515 - 15 GPM, 1 1/2 HP
Motors	OPT - Description 600 - 1/3 HP, 115V AC, 1-PH, 60Hz (standard) 605 - 1/3 HP, 230V AC, 1-PH, 60Hz, ODP 615 - 1/3 HP, 110V AC, 1-PH, 50Hz, ODP 616 - 1/3 HP, 220V AC, 1-PH,50Hz, ODP 621 - 1/3 HP, 230/460V AC, 3-PH, ODP, with motor starter 622 - 1/3 HP, 230/460V AC, 3-PH, TEFC, with motor starter 630 - 1/3 HP, 12V DC 635 - 11/3 HP, 24V DC 645 - 1/3 HP, 115V AC, 1-PH, 60Hz, TEFC 700 - 1/2 HP, 115V AC, 1-PH, 60Hz, ODP 705 - 1/2 HP, 230V AC, 1-PH, 60Hz, ODP 715 - 1/2 HP, 110V AC, 1-PH, 50Hz, ODP 716 - 1/2 HP, 220V AC, 1-PH, 50Hz, ODP 721 - 1/2 HP, 230/460V AC, 3-PH, ODP 722 - 1/2 HP, 230/460V AC, 3-PH, TEFC, with motor starter 730 - 1/2 HP, 12V DC 735 - 1/2 HP, 24V DC 745 - 1/2 HP, 230/115V AC, 1-PH, 60Hz, TEFC 822 - 3/4 HP, 230/460V AC, 3-PH, 60Hz, TEFC 825 - 3/4 HP, 230/460V AC, 3-PH, 60Hz, ODP, with motor starter 845 - 3/4 HP, 115/230V AC, 1-PH, 60Hz, TEFC 900 - 1 HP, 115V AC, 1-PH, 60Hz, ODP 905 - 1 HP, 230V AC, 1-PH, 60Hz, ODP 922 - 1 HP, 230/460V AC, 3-PH, 60Hz, TEFC 925 - 1 HP, 230/460V AC, 3-PH, 60Hz, ODP, with motor starter 945 - 1 HP, 115/230V AC, 1-PH, 60Hz, TEFC 1022 - 1 1/2 HP, 230/460V AC, 3-PH, 60Hz, TEFC, with motor starter 1025 - 1 1/2 HP, 230/460V AC, 3-PH, 60Hz, ODP, with motor starter 1045 - 1 1/2 HP, 115/230V AC, 1-PH, 60Hz, TEFC 3-PH motors may be operated at 190/380V; 50Hz. 50Hz operation reduces pump capacity by 5/6.
Motor Starters	OPT - Description 768 - Single phase magnetic motor starter 770 - 3-phase magnetic motor starter

Note: We are experts at building products that meet our customer's exact requirements. Contact Simplex if your job specifications require additional options or considerations.

STS Series

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