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Engineering Specs

CHEM-GARD CG

CHEM-GARD® CGA

CHEM-GARD® CGM

CHEM-GARD® CGC

CHEM-GARD® PG

CHEM-GARD® CGV

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CHEM-GARD® PG

Thermoplastic PRIME-GARD® Self-Priming Pumps

POLYPROPYLENE (PP) POLYVINYLIDENE FLUORIDE (PVDF)
Flows from 5 to 175 gpm Heads to 170 feet
Temperatures to 275°F

These heavy duty self-priming thermoplastic pumps are ideal for use on mobile acid buggies, for sump and tank evacuation and emergency overload pumping. They are often specified for in-line service where low headroom precludes the use of vertical pumps, and in other applications where rapid self-priming from depths to 15 feet is required. Available in PP & PVDF homogeneous thermoplastics, they are recommended for the handling of corrosive, abrasive, hazardous, toxic and other aggressive fluids.

As with all these thermoplastic pumps, no metal components are in contact with the fluid being handled. Even the large diameter steel shaft is isolated from the fluid by a thick sectioned thermoplastic sleeve. No metallic contamination is possible.

PRIME-GARD® pumps incorporate many of the unique design features of this CHEM-GARD® line of horizontal centrifugals. The retractable front bearing design provides for quick and easy mechanical seal inspection. The ability to simultaneously adjust this bearing close to the impeller minimizes shaft overhang for higher critical speeds and maximum seal life. The expanded wide open seal area accommodates most commercially available seals.

The PRIME-GARD® design allows for back pull-out which permits seal replacement without disturbing existing piping. These self-priming pumps are not subject to siphoning and loss of prime when shut down. They have an integrally molded solid thermoplastic priming chamber and check valve which holds its prime. Once the pump has been primed, the liquid is trapped in this chamber and the pump remains primed unless it is drained for maintenance.

SPECIFICATIONS

1. Pump cover and casing assembly molded from virgin, homogeneous thermoplastics.
2. Dynamically balanced, molded thermoplastic impeller with imbedded stainless steel insert. Key driven to assure positive drive.
3. Integrally molded, one-piece thermoplastic priming chamber which includes accessible check valve, inner casing and internal fluid passages. Construction holds prime on shut down, unless drained for maintenance.
4. No bolted-on accessories or blind recesses to impede complete drainage.
5. Interchangeable sliding bar pedestal which permits retrofitting with standard  CHEM-GARD® is pumps.
6. Suction port designed to allow for rotation.
7. Retractable front bearing to accommodate most commercially available mechanical seals and simplify seal inspection and servicing.
8. Reverse mounted mechanical seal to position the non-metallic face in fluid contact area.
9. Alloy steel heavy duty shaft isolated from fluid by thick sectioned thermoplastic sleeve.
10. Design to allow for back pull-out.

PERFORMANCE CHARACTERISTICS - 60 Hz
50 Hz curves available on request

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Designs, dimensions and specifications subject to change due to ongoing product improvement programs.

Catalog sheets available on all  CHEM-GARD® models including standard CG, CGA-ANSI, CGM-magnetic drive and CGC close coupled designs.
 

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MILLAR-WILLIAMS HYDRONICS LTD.
4060 Fairview St., Unit 12, Burlington, Ontario   L7L 4Y8
Burlington Tel: (905) 637 9496 Toronto (416) 868 1550
CANADA TOLL FREE 1-800-263-6651  FAX (905) 333 5446