Pumps: Centrifugal related categories
 | SERIES 5.5 - 30 gpm - AC ELECTRIC MOTORS
The 5.5 series pumps are the first in the March product line to employ an involute design with a closed impeller magnet assembly. They can deliver a maximum flow of 30 GPM (110 LPM), and are capable of serving applications with a maximum head of 41 ft. (9m). Able to handle chemicals of all kinds at temperatures up to 190° F (87° C), uses range from icemakers to film processors and silver recovery systems. Units with Kynar® plastic construction can handle strong halogen solutions and certain chromic or sulfuric acid solutions. Other options for wetted materials include glass filled polypropylene, ceramic, Viton® and 316 stainless steel. Optional bushings, ′′O′′ rings and spindle combinations are available.
Drive motors are a 1/5 HP (.149 kw), 3200 rpm, 115-volt single phase air-cooled or a 1/3 HP (.248 kw) 3450 rpm, 115/230-volt single phase or 230/460-volt three-phase totally enclosed, 50/60 Hz. motor. Explosion-proof motors are also available. Standard port configuration is a 1′′ FPT inlet with a 3/4′′ MPT outlet. |
 | SERIES 7.5 - 82 gpm - AC ELECTRIC MOTORS
Series 7.5 pumps are the only ones in the March product line with all molded parts constructed of natural Kynar®. This makes them ideal for super sensitive applications where even a trace of foreign matter is unacceptable, such as microchip manufacturing. Various bushing materials are available for such applications where purity of solutions is critical.
Other component materials are Viton®, Teflon® or ethylene propylene ′′O′′ rings, ceramic thrust washer and spindle and carbon bushings.
Flow rates range from 10 GPM (35 LPM) minimum to 82 GPM (268 LPM) maximum. Head ranges from 0 ft. to a maximum of 85 ft. (18m). Other application examples include plating equipment and D.I. water systems.
Standard with the Series 7.5 pump is a 2 HP (1.49 kw), 230/460-volt, three-phase, totally enclosed motor. Severe duty and explosion-proof motors are also available. Standard port configuration is a 2′′ MPT inlet with a 1 1/2′′ MPT outlet. |
 | SERIES 10 - 210 gpm - AC ELECTRIC MOTORS
The largest and newest chemical pump in the March product line, the innovative Series 10 is an ideal transfer pump for many strong acid and caustic chemical solutions, such as those based on halogens or chromic and sulfuric acids. Made of carbon-filled Kynar® plastic (PVDF), it is designed for complete chemical compatibility. Other materials include carbon-filled Kynar®, ceramic, and Viton®. Standard bushings are carbon.
Flow rates range from 50 GPM (175 LPM) minimum to 210 GPM (680 LPM) maximum. Head ranges from 0 to 170 ft. (35m) maximum. To insure smooth operation with various specific gravities over 1.0, the impeller magnet assembly may be trimmed to a minimum diameter of 5.250′′ (135 mm).
The electric motor drive is a 10 HP (7.45 kw), 230/460- volt three-phase, totally enclosed chemical duty motor. An explosion-proof 15 HP is available on special order. Standard port configuration is a 3′′ MPT inlet with a 2′′ MPT outlet.
Because the Series 10 pump is manufactured of only one material for some rather specific applications, the variations in bushings, thrust washer and static ′′O′′ rings are limited. A pump application questionnaire must be completed and submitted to the March Engineering Department to ensure proper job-specific design. |
 | HYDRONIC PUMPS SERIES 821 - 22 gpm - AC ELECTRIC MOTORS
The Ultimate in Reliability in Circulating Pumps for Industrial/Hydronic/Solar Applications.
Depending on application, March hydronic pumps are available in a variety of materials, including plastic, bronze, stainless steel, and cast iron. Specific models are designed to operate with fluid temperatures as high as 350° F (176° C), such as in hot water systems or with hot oil for food products. Special designs can withstand temperatures up to 500° F (260° C).
Models are available for use on 12- and 24-volt DC systems (for uses such as heating systems on public buses) as well as 115- or 230-volt AC systems (popular for use in domestic, industrial and commercial hot water and solar heating applications). Maximum flow rates range from 5.5 GPM (13.7 LPM) to 7.5 GPM (.22 LPM) for DC-powered units, and from 4.5 GPM (13.7 LPM) to 8 GPM (28 LPM) with AC-powered models. Because the motors can be removed without draining the system, service is greatly simplified.
Larger pumps are available with either flange or threaded inlets and outlets.
Note: Pumps are available with 50 or 60 Hertz motors. |
 | SERIES 140 - 125 gpm - ELECTRIC MOTORS
Use the compact Series 140 pumps where maximum flow with minimal pressure is desired. Maximum flow is 12.5 GPM (55 LPM) and maximum head is 11.5 ft. (2.5m)
Series 140 pumps use 1/20 HP (.037 kw), 2900 rpm 115- volt air-cooled motors, and are made with a variety of materials such as glass-filled polypropylene, Buna N rubber, ceramic, Ryton®, Teflon® and Viton®. |
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