PSI Hydrostatic Driven Flusher Tank Specifications

 

Tank Construction:

Tanks are elliptical cross section design. Tank heads will be 7 gauge material, flat, flanged, and reinforced. A sufficient number of surge plates of full section 10 gauge material with reinforcement and staggered crawl holes allowing a person to pass from one section to another with holes at bottom to allow full drainage of tank will be supplied. Tank bottom shells will be 7 gauge and Tank tops shells will be 10 gauge. All tank material will be ASTM A569 and sand blasted for proper tank coating adhesion. All tank seams will be electrically welded inside and out.  Optional Stainless Steel tanks will be of the same gauge 304 stainless.

 

All tanks will have 22” diameter manholes with quick latch no pressure relieving manhole cover and have replaceable manhole gaskets. Overflow pipes will be a minimum of 3” schedule 40 material extending from tank top through tank bottom located in position to clear all truck components.

 

All tanks will have a minimum 8” diameter tank sump located at bottom of tank, sump will have a 4”brass plug, sump will be located near rear of tank for proper pump suction.      

 

Pump suction intake will be gravity feed and have a flexible hose connection at pump inlet for the purpose of misalignment and shock.

 

Tank overload near full to full indicator located near center of tank top visible to operator from hydrant location.

 

All water tanks will have a minimum of 2.5” schedule 40 hard piped fill line located near manhole location at top of tank, Fill line will have a 6” air gap.

 

Ladder access will be located near center of tank and extend from manhole to operator ground level location curbside, Ladder shall have non slip feature with operator handrails located at top of ladder.

 

Pump:

Pump shall be single stage high pressure with vertically split case with 5” intake and 4” discharge ports. It will have a bronze fitted impeller and interior of pump will have easy access for service. Pump will be rated for 750 gallons per minute at 2000 rpm capable of maintaining 60 pounds pressure pumping a minimum of 600 gallon per minute at 2000 rpm. Discharge connection to pump will have a removable hose connection allowing ease of pump service. All pump discharge plumbing will be of welded construction. Pump will be directly connected to hydrostatic drive power unit with absorbing and aligning torque coupling to eliminate the problems due to shock and misalignment. Pump and discharge header will be located at rear of tank for ease of service

 

Hydrostatic Drive Power Unit ( Pump Drive ):

Type:      Hydrostatic transmission, P.T.O. driven, consisting of:

Pump:     Infinitely variable displacement pump with a minimum displacement of 4.57 cubic inches per revolution, axial piston type.

Motor:    Fixed displacement motor with minimum displacement of 3.35 cubic inches, axial piston type.  Entire transmission unit shall be capable of operating at pressures to 5000 P.S.I.  Hydraulic oil temperature may reach 200 degrees F. without damage to system.  Unit shall have internal valving & shall be fitted with relief valve.

Power Takeoff:     Hydrostatic transmission of flusher to be driven by a suitable heavy-duty power takeoff, installed on truck transmission, with shifting control in truck cab or front live power.

Hoses:    High pressure hoses and fittings per S.A.E. standards.

Reservoir: Minimum 20 gallon hydraulic reservoir with thermometer.

Filter:      7-micron replaceable spin on cartridge type filter.

Oil Cooler: Radiator mounted oil cooler to allow adequate cooling for entire flushing hydrostatic system.

Electric Fan Oil Cooler: Optional.

 

Automatic Water System Pressure Control:

The automatic water system pressure control shall consist of an electric sensing system with single selector Dial and reference pressure gauge mounted in truck cab for operating pressure selection.  The operator may change to higher or lower pressure settings by use of the single selector dial only.  The  system shall provide constant water pressure regardless of water flow or vehicle speed in the range of 3 to 25 MPH.  Speed range depends on chassis drive train specification.  A manual switch on the control panel shall be provided to override the constant pressure sensing system, if necessary.  All controls shall be pedestal panel mounted in the truck cab.

 

Nozzles:

Nozzles will be steel construction that will plane in 3 directions and lockable in any position.

Each nozzle will be capable of 150 gallons per minute output at 50 pounds per square inch pressure. 3 nozzles are standard equip. Two (2) nozzles mounted between front and rear tires and One (1) located at front of truck under bumper.

 

Discharge nozzle control:

Nozzle controls for each nozzle will be controlled from truck cab. Each nozzle will be controlled by air controlled electric solenoid. (NOTE) trucks without air brakes solenoid valves will be controlled by header bar water pressure. Water valves will have a replaceable disc and diaphragm to open and close using truck air or water pressure from discharge header bar. Each valve will be controlled by a switch located in truck cab control panel within easy access of operator.

 

Piping:

All discharge piping will be of welded construction using a minimum of 2’’ diameter schedule 40 for each water valve. All header discharge piping will be a minimum of 3” diameter schedule 40 pipe. Rubber water hose will be used where increased flexibility is needed. All points where water has low freeze points will have drain valves, This includes tank, piping, header bars and water valves.  The piping system includes a re-circulation system to prevent freezing during cold weather operation.

 

Fenders & Bumpers:

Standard equipment includes plastic fenders over rear tires, load hose supports, heavy rear bumper connected to truck frame.

 

Lights and Reflectors:

All lights will meet or exceed Federal Motor Vehicle standard NO.108. Included will be stop, turn, and tail, side clearance and reflectors. All wiring will be in flexible plastic loom.

 

Tank Mounting:

Tank will have full-length steel sills, tank will be mounted to truck using spring loaded tie downs securing tank to truck. There will be plastic hard cushion strips between tank sills and truck frame. The unit will be mounted to suitable truck chassis. It will be the responsibility of the water tank manufacturer to determine the maximum capacity of tank that is suitable for mounting tank to truck. The manufacturer will certify that the vehicle (truck and body) will comply with all federal motor safety standards at the time of manufacture.

 

Finish:

The water tank body paint will meet all specifications: All body parts will be painted to customer specs. Or match truck cab. Tank interior will be epoxy coated with 8 year warranty.

 

Literature and Specifications:

With bid manufacturer will include all literature and specs of the unit being bided and a list of exceptions to specifications. The successful bidder will provide (1) set of parts and operators manuals with the finished unit.

 

Warranty:

Standard 18 Month Warranty.

 


Optional Equipment:  (May be Added or Substituted to the basic unit Specifications.)

 

12” Standard tank dump valve, dump valve will be a variable controlled function from truck cab able to be adjusted from Ό - ½ - Ύ - and full opening. Dump valve is a positive open and shut closing valve. Dump valves will have a dump chute extending from dump valve opening located at bottom of tank to the rear of bumper.

 

Suction Filling, Tank will be able to be loaded from a remote source by means of this option, can also be used to transfer water from one source to another. Option will consist of a primer pump, foot valve strainer.

 

Suction Hose, 2 lengths of standard 3” x 10’ rubber hose for use with suction filling option.

 

Fire Fighting, A standard 2.5” Ό turn ball valve attached to pressure discharge side of water pump will be provided for the use of spraying and or transferring water.

 

Hose Reel, Standard 1.5” x 100’ (electric or manual rewind) hose reel and hose with adjustable fire fighting nozzle will be supplied.

 

Load Hose, A 2.5” x 15’ cotton jacket hose with 2.5” IPT coupling on one end, (Hydrant coupling will be supplied by customer)

 

Additional Nozzles, A fourth flushing nozzle with valve and controls will be mounted in front of truck under bumper.

 

Sprinkler Attachments, Will consist of a cylinder shaped head mounted vertically at either front or rear of unit or both, heads can be controlled together or separate, sprinkler heads will be controlled same as flushing nozzles.

 

8’ Spray Bar, Mounted at rear of unit, 8’ Spray Bar can be pressure or gravity feed and will be mounted at rear of unit.

 

Empty Tank Indicator, Will warn operator by means of a light in control panel when tank is near empty.

 

Engine Gauges and Throttle, All gauges and engine throttle will be located in truck cab control panel, each unit will have a control box pedestal mounted in cab adjustable to operator needs.

 

Lighting, Weather sealed lighting / beacons / and working lights.

 

Stainless Steel Tank, All stainless steel tanks / and attaching discharge plumbing will be 304 stainless steel. All discharge plumbing will be all welded construction.

 

Brass Nozzles / Sprinkles Heads, Nozzles will be (2) piece split, Sprinkler Heads will be brass vertical slotted.

 

Full And Half Skirted Units, Both full and Half skirted units will have a sloping rear panel with (2) ventilated rear doors for easy access to pump and engine assembly, full skirted units will cover rear and side truck components and will extend to center of rear truck tires. Half skirted units will cover rear pumping unit and rear truck tires. Each unit will have a heavy channel bumper built into skirting. Full skirted units will have side access doors for batteries / fuel tanks and optional hose reels.