B09_Amd8_-_Spec_46_33_11_-_CHEMICAL_FEED_-_LIQUID_SYSTEMS_0008.pdf
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- Solicitation number
- 140P2025R0082
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This is a federal specification section for chemical feed liquid systems covering metering pump equipment, accessories, and installation requirements for a water treatment facility.
The specification requires a single-source supply of a complete chemical feed system including mechanical diaphragm solenoid-drive metering pumps, system accessories, and liquid chemical storage and holding tanks. Pumps must be NSF 61 certified and accommodate RO Antiscalant (specific gravity 1.10±0.05, operating temperature 50-85°F) and Sodium Hypochlorite (specific gravity 1.01, operating temperature 50-85°F). For RO Antiscalant, acceptable pump models are PMP1002, PMP1003, PMP3102, and PMP3103 with 1 GPH capacity per head, 90 PSI maximum discharge pressure, and 72 SPM maximum stroke rate. For Sodium Hypochlorite, acceptable models include PMP1801, PMP1802, PMP3105, and PMP3106 (peristaltic alternative available) with capacities of 1-5 GPH, 30 PSI discharge pressure, and 120V/60Hz/1P electrical requirements. All pumps require materials compatible with the chemicals, including PVC or PVDF pump heads and valves, PTFE diaphragms, ABS cases, and FKM seals. The specification requires ON-OFF controls with 0-100% speed adjustment, over-pressure protection, no-flow alarms, and digital pump rate displays with owner-operable calibration procedures. Two stainless steel or fiberglass pump tables (27" H x 14" W x 21" L) must be provided, along with corporation cock main connections, PVC isolation ball and check valves, and drum suction apparatus with integral check valves and Hastelloy strainers. Spare parts must include O-rings, gaskets, diaphragms, and ball check sets for each pump. Submittals require shop drawings, chemical resistance data, complete performance specifications, and operation and maintenance manuals.
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Text version
DEVA 318717 46 33 11 - 1
CHEMICAL FEED - LIQUID SYSTEMS
SECTION 46 33 11 - CHEMICAL FEED - LIQUID SYSTEMS
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Chemical metering pumps for:
a. RO Antiscalant.
2. System accessories.
3. Liquid chemical tanks:
a. Storage tanks.
b. Holding tanks.
B. Related Specification Sections include but are not necessarily limited to:
1. Section 01 73 40 - Execution.
2. Section 40 05 00 - Pipe and Pipe Fittings - Basic Requirements.
3. Section 40 05 51 - Common Requirements for Process and Utility Valves.
4. Section 40 61 96 - Process Control Descriptions.
5. Section 43 21 00 - Pumping Equipment - Basic Requirements.
1.2 QUALITY ASSURANCE
A. Referenced Standards:
1. National Electrical Manufacturers Association (NEMA):
a. 250, Enclosures for Electrical Equipment (1000 Volts Maximum).
B. Secure and coordinate entire system including but not necessarily limited to metering pumps, electric equipment, controls, hardware, valving, and piping through the metering pump manufacturer.
1. Pumps, piping and accessories must be NSF 61 certified.
1.3 SYSTEM DESCRIPTION
A. System shall be supplied through a single source and include all components specified herein.
DEVA 318717 46 33 11 - 2
1.4 SUBMITTALS
A. Shop Drawings:
1. See Specification Section 01 73 40.
2. Drawings and product data:
a. See Specification Section 43 21 00.
b. Pump:
1) Chemical resistance data for materials used.
2) Complete performance information:
a) Capacity, operating range.
b) Pressure rating.
c) NPSH required.
d) Stroke speed, length.
e) Horsepower required.
f) Plunger diameter.
c. Valves:
1) See Specification Section 40 05 51.
d. Piping:
1) See Specification Section 40 05 00.
e. Control modes.
B. Contract Closeout Information:
1. Operation and Maintenance Data:
a. See Specification Section 01 78 23 for requirements for the mechanics, administration, and the content of Operation and Maintenance Manual submittals.
1.5 PROJECT CONDITIONS
A. Pumped Liquid:
LIQUID SPECIFIC GRAVITY TEMP DEGF
RO Antiscalant 1.10±0.05 50-85
Sodium Hypochlorite 1.01 50-85
DEVA 318717 46 33 11 - 3
PART 2 - PRODUCTS
2.1 METERING PUMPS
A. Materials:
1. Mechanical Diaphragm Type - Solenoid-Drive:
SODIUM HYPOCHLORITE AND RO ANTISCALANT
Pump Head PVC or PVDF
Valves PVC or PVDF
Diaphragm PTFE
Case ABS
Seals FKM (Viton®)
2. Peristaltic Type (Sodium Hypochlorite Option):
SODIUM HYPOCHLORITE
Hose SEBS / Flex-A-Prene / Or equal compatibility
B. Pump Performance and Design Requirements:
1. Units shall have the following characteristics:
a. Tag number(s):
1) RO Antiscalant
a) PMP1002, PMP1003, PMP3102, PMP3103.
2) Sodium Hypochlorite.
a) PMP1801, PMP1802, PMP3105, PMP3106
b. Heads/unit: 1.
c. Capacity/head (GPH): 1.
d. Maximum Discharge pressure (PSI): 90.
e. Maximum stroke rate (SPM): 72.
f. Drive: Solenoid
g. Electrical requirements: 120V / 60Hz / 1P.
2. Sodium Hypochlorite Alternative:
a. Tag number(s): PMP1801, PMP1802, PMP3105, PMP3106.
b. Heads/unit: 1.
DEVA 318717 46 33 11 - 4
c. Capacity/head (GPH):
1) PMP1801, PMP1802: 1 GPH
2) PMP3105, PMP3106: 5 GPH
d. Discharge pressure (PSI): 30.
e. Electrical requirements: 120V / 60Hz / 1P.
C. Pump Fabrication:
1. Pump:
a. Solenoid: Ball-check inlet and outlet valves
b. Moving parts totally enclosed and self -lubricating.
c. Complete external control with 10:1 minimum manual stroke adjustment, adjustable while operating.
d. Capable of operating dry without damage to any component.
e. Repeatable accuracy: 1% of maximum output or better.
f. Nameplate with chemical, capacity (GPH) and pressure (PSI) ratings.
2. Support:
a. Mount pump and drive on common support plates.
b. Fabricate to withstand all operating loads.
c. Provide anchorage of support.
3. Controls:
a. ON-OFF switch with local speed control (0-100%) or pulse frequency or 4-20 mA input signal.
b. Over pressure protection integral to pump.
c. No flow alarm
d. Digital display of pump rate.
1) Pump has integral calibration procedure that can be done by Owner’s staff.
e. See Specification Section 40 61 96.
D. Spare Parts:
1. Provide the following spare parts for each metering pump:
a. One set "O" rings and gaskets.
b. One each diaphragm.
c. One set ball checks and seats.
2.2 SYSTEM ACCESSORIES
A. Miscellaneous Accessories:
1. Metering pump table:
DEVA 318717 46 33 11 - 5
a. Quantity required: 2.
b. Dimensions (approximate):
1) Height: 27 inches.
2) Width: 14 inches.
3) Length: 21 inches.
c. Materials: 304 stainless or fiberglass reinforced plastic.
2. Main connection:
a. Corporation cock type.
b. Pipe NPT size: 1/2 inches DIA.
c. Provide corporation cock with compression fitting for solution tube.
d. Provide 1/2 inches DIA PVC solution isolation ball and check valves.
3. For chemical drums, provide pump suction apparatus as follows:
a. Drum Stick or equal.
b. Integral check valve to prevent need to prime peristaltic pumps.
c. Hastelloy strainer
d. ¾-inch polypropylene construction.
PART 3 - EXECUTION
3.1 INSTALLATION
A. See Specification Section 01 73 40.
3.2 DEMONSTRATION
A. See Specification Section 01 75 00.
END OF SECTION 46 33 11
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