24.2. Reservoir Tanks: 24.2.1. Two (2) each 75 to 80-gallon capacity reservoir tanks designed to fit in the triangular space of an eight (8) foot slide in "V-Box" salt/sand spreader and not protrude past a point that would interfere with mounting the salt/sand spreader in a dump body. 24.2.2. The tanks shall be rotationally molded from the linear polyethylene resins, treated with long term ultraviolet radiation stabilizer and be molded with heavy duty bottom and side walls to resist abrasion. 24.2.3. Two (2) each 6" fill caps to be supplied with gaskets. 24.2.4. Tanks to be constructed of a minimum 1/4" material throughout and comers to be minimum ½" to ¾" radius. 24.2.5. Supply parts to be minimum ½" and must not be spin welded. 24.2.6. Suction parts to be 1 ½" molded in a brass insert or a compression fitting. 24.2.7. Each tank shall be equipped with a port for ¼" tum PVC ball valve to isolate the liquid in the tank. 24.2.8. ¼" Tum PVC ball valve to fit port shall be provided. 24.2.9. Each tank shall be equipped with a pressure and vacuum vent. 24.2.10.Each tank shall contain built-in internal baffles. 24.2.11.Each tank shall include a molded in-product level indicator on each end with a minimum of four (4) each graduated markings. 24.2.12.To ensure efficient mounting in the triangular space between the spreader sides and the dump body, the tank shall not exceed the following dimensions: base width of 15" +-1"; top width of 5"; vertical height minimum 20" and not exceed 24" (not including the filler and cap; overall length of no greater than 84". 24.2.13.Tanks shall be clean and free of any contaminants or debris. 24.3. Tank Mounting Brackets: 24.3.1. For each tank there shall be two (2) each¼" x 3" #304 stainless steel "L" shaped mounting brackets. The mounting brackets shall be designed to securely connect to the "V" shaped salt/sand spreader side and to the conveyor housing of the spreader. 24.3.2. The tanks shall be secured by two (2) 3" nylon tension adjustable straps OR two (2) 3" stainless steel straps that connect to the "L" brackets. 24.3.3. All nuts, bolts and washers or additional materials used to attach the mounting bracket, and straps shall be stainless steel. 24.3.4. Four (4) each #304 stainless steel formed or structural channels measuring 4" x 1-1/2" x 1/4"T x 20" L shall be provided for supporting the reservoir tanks tothe spreader shipped loose to be located and attached by the State per unit. 24.4. Spray Bar, Fittings, and Hoses: 24.4.1. A 3-sequence nozzle spray bar assembly constructed of stainless steel. 24.4.2. The spray bar mounting bracket shall be constructed of #304 stainless steel and located on the adjustable gate of the saltspreader. 24.4.3. All hoses shall be flexible PVC reinforced with nylon filaments. 24.4.4. Barb type fittings for calcium/brine connections to hoses with stainless steel, screw type, combination hex and Phillips head hose clamps. 24.4.5. A corrosion resistant check valve shall be provided to prevent siphoning of the melting agents from the tanks through the spray bar. 24.4.6. Spray system capable of being constructed and installed by the State to allow the individual control of draining tanks when pumping remaining product back to a facility's main storage tank and shall include a quick coupler assembly as a termination point. 24.4.7. State to provide hose from coupler to facility storage tank. 24.4.8. Spray system to be constructed and engineered to provide a means for flushing the pump and spray system with water, RV anti-freeze, or a corrosion resistant product to protect the system internally for summer storage. 24.5. Filter: 24.5.1. A corrosion resistant, in-line, replaceable element filter shall be provided to protect the system from particles that may cause damage to the pump or clog the spray nozzles. The filter shall be located outside and near the pump enclosure to allow easy access for cleaning. 24.6. Pump: 24.6.1. Gear pump style pre-wetting power unit manufactured by Bosch Rexroth (version 17.2 part number 311789 / R 987377133). Pump will be an inverted bronze gear style pump with a built-in relief valve that will utilize variable return all to provide closed loop pre-wetting of road salt. 24.6.2. Assembly shall include a built-in internal proportional valve and flow meter for feedback loop to controller. 24.6.3. This wet system is intended to be controlled by existing Bosch Rexroth CS550 in- cab controller. 24.7. Protective Enclosure for pump and circuity: 24.7.1. The pump, electrical components, and wiring connections (C4and M12 connectors) shall be enclosed in a stainless-steel enclosure for this equipment. 24.7.2. All penetrations of the protective enclosure for wiring or hoses shall be equipped with waterproof compression type bulkhead fittings. 24.7.3. A mounting bracket constructed of#304 stainless steel shall be provided to allow mounting the enclosure to the spreader body. The mounting body assembly shall include a stainless-steel backing plate to reinforce the back of the protective enclosure and receive the mounting hardware for connection of the product pump. 24.7.4. The dimensions of the enclosure shall be approximately 12" x 10" x 4-1/4". The minimum wall thickness of the enclosure shall be constructed of 18-guage stainless steel. The enclosure shall be accessible through a panel or a hinged door that includes a stainless-steel hinge with a waterproof gasket to provide easy access to the pump and related components. 24.8. Wiring Harness: 24.8.1. The pre-wet wiring harness shall be factory made without splicing and contain C4 and Ml 12 connectors that are ready to connect directly to an existing Bosch Rexroth CS550 Salt/Sand controller system. 24.8.2. An additional extender cable shall be required to allow a means of connect/disconnect behind the truck cab. 24.9. Miscellaneous: 24.9.1. An operator, installation and parts manuals shall be included with each unit. 24.10. Vendors shall provide material safety data sheets with the delivery of any and all products covered by RSA 277-A, the “Worker’s Right to Know Act.”
