Questions_and_Answers.pdf

CENTRIFUGAL PUMP

Flint Hills NWR RFQ f16PS00310

Amendment 000001 Questions and Answers

1. Pump “Pump shall be of a centrifugal radial flow type with all “mild steel fabrication” with the exception of the casing and impeller.”

What is the material composition of the casing and impeller?

Impeller shall have a double suction and the casing shall have a double volute. Pump shaft drive shall be minimum 2 ¼ inch diameter ASTM carbon 1045 PSQ shafting. Shaft bearings shall be triple seal bearings with lubrication lines run to the front of the trailer from each bearing.

Oil Lube for bearings or grease? If oil, where do the lines connect, a gravity feed reservoir with cap? If grease, zerk fittings?

Is the pump discharge flanged? If so to what pressure rating? Is the pump suction flanged? If so to what pressure rating? Any suction hose/ pipe or strainer required?

Can the suction be from the side of the trailer?

Casing and impeller needs to be steel as well.

Bearings should be grease fed / fittings.

Pump discharge should not be flanged. We clamp the discharge hose, which should be rubber, to the discharge with band type clamps.

We need the suction to come from the end of the trailer, we back into a river to pump from - We need 16" rubber discharge hose and we use a steel ring connecting system.

2. Trailer The pump shall be weld fabricated and attached to a two-wheel trailer that has a minimum 3,500 pound road worthy axle, 15 inch 6-ply tires (minimum), a pin hitch, and an attached 2,000 pound swivel jack.

Stop, tail, turn signal lights?

Trailer finish coating; paint if so what type, color? If powder coat, what color?

No trailer lights are required. Painted (Powder coat is not required, nor are we concerned with the color).

3. Discharge Pipe A steel discharge pipe shall convey the water to the front of the trailer. One section of rubber (is flat roll 20’ PVC acceptable?) discharge hose (16”?) and a hose clamp (Do you want a barb fitting on end of discharge pipe?) shall be included.

Is the discharge pipe flanged or barbed? If flanged to what pressure rating?

Pump discharge should not be flanged. We need a 50 foot, 16 inch heavy duty rubber discharge hose and we use a steel ring connecting system.

4. No intake hose is required.

5. Needs to be self-priming.

6. Must be able to pass 2" solids.

7. Vertical pumping (lift) is generally no more than 25 feet.

8. FOR QUOTE PURPOSES ONLY

Brand Name Equivalent: 16 Inch Tarpon Trailer Pump w/Diesel Engine, manufactured by Gator Pump, Inc.