SECTION 11328B CHEMICAL METERING PUMPS ALUM METERING PUMP

This spec was part of the Des Plaines, IL River WRF project tat bid Feb 26, 2015.


SECTION 11328B

CHEMICAL METERING PUMPS ALUM METERING PUMP


PART 1 GENERAL

1.1 WORK INCLUDED

A. Chemical Metering Pumps:
1. Alum Metering Pump No. 5: P-8-26-5.

B. Major components included with, but not limited to:
1. Pump.
2. Drive Mechanism.
3. Accessories.
4. Controls.

1.2 SYSTEM DESCRIPTION

A. The chemical metering pump shall transfer a chemical solution of liquid alum in metered quantities from the storage tank to the secondary effluent splitter box.

1.3 DESIGN REQUIREMENTS

A. Liquid Handled: Liquid Alum.

B. Pump Type: Motor driven, reciprocating, mechanically actuated diaphragm pump.

C. Minimum Pump Capacity: 116 GPH.

D. Maximum Discharge Pressure: 100 psig.

E. Suction Lift: 1 foot maximum.

F. Operating Temperature: Ambient 40-90 °F.

1.4 SUBMITTALS

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

1.5 DELIVERY, STORAGE AND HANDLING

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

PART 2 PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

2.2 GENERAL

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

2.3 METAL FABRICATION

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

2.4 EQUIPMENT

A. Motor:
1. Furnish motor compatible with the driven equipment herein. Motors shall conform to the detailed requirements herein:
a. Motor nameplate horsepower: ¾ HP.
b. Type drive: Variable speed.
c. Nominal (synchronous) motor rpm: 1800 rpm.
d. Enclosure: TEFC
e. Power: 120 volt, single phase, 60 Hz.
f. The motor shall not be overloaded beyond the nameplate rating under any normal conditions encountered.

B. Pump:
1. Drive:
a. Type: Positive displacement, mechanically actuated diaphragm.
b. Exposed fasteners: Stainless steel.
c. Maximum strokes per minute (adjustable): 160 spm.
d. Stroke length adjustment: Manual 0 to 100% adjustment.
2. Liquid end materials of construction:
a. Head: PVDF or PP.
b. Diaphragm: PTFE.
c. Ball Check: Ceramic.
d. Ball Seat: PVDF or PP.
e. Gasket: PTFE faced Viton.
3. Pump Accuracy: +/- 1%.

C. Maximum skid dimensions:
1. Depth, inches: 36
2. Width, inches: 42
3. Height, inches: 72

D. Pump Piping, Valve, and Accessory Package

1. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

2.5 INSTRUMENTATION AND CONTROL

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.


PART 3 EXECUTION

3.1 INSTALLATION

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.

3.2 MANUFACTURER'S SERVICES

A. See General Pump Specification, Section 11328, CHEMICAL METERING PUMPS - GENERAL.


END OF SECTION