II. Specifications The TWAS pumps and mud valves as bid shall meet or exceed the specifications described on the specification sheet for the existing Moyno pumps and shown herein: A. Pump Replacement 1. Replace the two (2) existing Moyno pumps with a rotary lobe style pump. a. Remove existing pumps i. Removal will occur in 2 phases to allow for continuous operations. ii. Removal of existing pumps will require the contractor to place removed pumps and materials outside of the facility for the City to salvage and dispose of. iii. Removal of existing pumps shall also include the demolition of existing housekeeping pads on which the current pumps are installed on. Division of Contracts & Procurement 215 SE 7th Street, Room 60 Topeka, KS 66603 procurement@topeka.org P: (785) 368-3749 F: (785) 368-4499 b. Install two (2) new pumps in 2 phases to allow for continuous operations. i. Pumps will be labeled N-S-TSP1, N-S-TSP2 ii. Installation shall include appropriate piping, which shall include sample ports with 1 inch stainless steel ball valve on the suction side of pump. The ports shall be turned 90 degrees to discharge down. iii. Installation shall also include new housekeeping pads, in compliance with section 5.01 of the City of Topeka Standard Technical Specifications for commercial grade concrete, for the new pumps to be situated upon. 1. Housekeeping pads shall be installed to provide positive drainage. c. The following pressure sensors shall be included with pumps: i. Suction side: 1. Pressure gauges – Pumps will have compound gauges with a Range of -30 to 30 PSI ii. Discharge side: 1. Pumps will have pressure switches with gauges with Range of 0-100 PSI to shut down pumps in the event of deadhead or blockage. 2. Performance Data a. See spec sheet for original equipment. b. Motor enclosure will be weather proof that meets or exceeds the requirements of NEMA 4X, designed to withstand direct hose wash down 3. Rotor coating: Buna-N 4. Flange size: 8 inch (suction and discharge) 5. Spare parts to include: a. Two (2) set of lobes, seals, and wear plates b. Lobe puller 6. Existing pipe is ductile iron pipe. 7. The termination point will be where the existing piping can meet up with the new pumps. 8. Suction side may use Schedule 80 PVC, but discharge side must remain ductile iron. 9. A thermal overload will be needed to shut down the motor in case of overheating. B. Mud Valve Replacement 1. Remove existing 6” Mud valves 2. Install and connect new 6” Mud valves 3. Removal and installation will be in two phases with the associated TWAS pumps. 4. All fasteners (nuts, bolts, washers, etc) must be stainless steel. 5. Mud valves will be labeled: N-S-MV1, N-S-MV2
