March Manufacturing

March Manufacturing

Magnetic driven centrifugal pump constructed of polypropylene, Ryton, Kynar, 316SS and Hastelloy C. March offers three different levels of corrosion resistant design levels.

AC Series- Using air cooled (open motors) and may contain stainless steel parts.

BC Series - Using blast cooled enclosed motors and plastic encapsulated liquid containing parts and Viton® O-ring seal.

TE Series - Using TEFC motors and encapsulated liquid containing parts and Viton® O-ring seal.

March magnetic driven pumps are corrosion resistant to a wide range of chemical solutions including acids, alkalies and caustics up to 180 degree F. There is no shaft seal, so there is no seal wear, leaking or squeal. There is no seal friction to cause loss of pumping power. The only moving parts inside the pump volute are the impeller magnet assembly and the bushing that rotates on the pure ceramic spindle. Powerful impeller and drive magnets provide full torque, prevent slippage and give instant start-up. Carbon impeller bushing can be provided as an option -- this allows the pump to run dry with out damage for short periods of time.

March TE Series magnetic driven pumps are constructed of polypropylene and/or Ryton® (motor bracket, impeller magnet assembly, encapsulated impeller assembly and pump housing), carbon or Chemloy or Ryton/Teflon® (bushing), ceramic (spindle and thrust washers) and Viton® O-ring. All motors are totally enclosed fan cooled.

Model SP-TE-7P-MD is supplied as a self priming unit using a 1HP motor. Performance is similar to the TE-7R-MD pump. This pump can prime up to 10 feet. Pump is available in polypropylene construction or with optional Kynar liquid end construction.

This pump will retain liquid within the priming chamber to assure that the pump will prime. The chamber must be initially filled. A drain connection is provided to empty the chamber prior to service and periods of long shut down.

A priming chamber, constructed of polypropylene is available for Model 4 through 6.

Performance Data - up to 1/3 HP
Model	Flow @ 10 Feet	Flow @ 20 Feet	Flow @ 30 Feet	Max: GPM @ Feet
AC-3C-MD BC-3C-MD	5	-	-	7 @ 5 feet
AC-4C-MD BC-4C-MD	11	5	-	11 @ 5 feet
TE-5C-MD	16	11	3	17 @ 5 feet
TE-5.5C-MD	23	17	11	25 @ 5 feet

TE Series - Performance Data - 1/2 to 1 HP
Model	Flow @ 25 Feet	Flow @ 40 Feet	Flow @ 50 Feet	Max: GPM @ Feet
TE-6T-MD	26	15	-	34 @ 10 feet
TE-7R-MD	45	35	27	50 @ 12 feet
SP-TE-7P-MD	45	35	27	50 @ 12 feet

TE Series - Performance Data - 2 to 10 HP
Model	Flow @ 45 Feet	Flow @ 80 Feet	Flow @ 140 Feet	Max: GPM @ Feet
TE-7.5K-MD	75	28	-	80 @ 35 feet
TE-8C-MD	112	64	-	125 @ 35 feet
TE-10K-MD	200	173	70	205 @ 40 feet

M Series - Dimension and Motor Information - many pumps can be furnished with air or explosion proof motors.
Model	Suction	Discharge	Horse Power	Instruction Manual
AC-3C-MD BC-3C-MD	¾" FNPT	½" MNPT	1/15 115V only
AC-4C-MD BC-4C-MD	1" FNPT	½" MNPT	1/10 115V only
TE-5C-MD TE-5K-MD TE-5S-MD	1" FNPT	½" MNPT	1/5 115 or 230V
TE-5.5C-MD TE-5.5K-MD TE-5.5S-MD	1" FNPT	¾" MNPT	1/3 1 or 3 phase
TE-6T-MD TE-6K-MD	1" FNPT	¾" MNPT	½ 1 or 3 phase
TE-7R-MD TE-7K-MD TE-7S-MD TE-7H-MD	1 ½" FNPT	1" MNPT	¾ 1 or 3 phase
SP-TE-7P-MD SP-TE-7K-MD	1 ½" MNPT	1" MNPT	1 1 or 3 phase
TE-7.5K-MD	2" MNPT	1 ½" MNPT	2 3 phase
TE-8C-MD TE-8K-MD TE-8S-MD	2" MNPT	1 ½" MNPT	3 3 phase
TE-10K-MD	3" MNPT	2" MNPT	10 3 phase

Material construction is indicated in the model number of the pump.

C - polypropylene
K - Kynar (PVDF)
R - Ryton - TE 7 only
T - glass filled polypro / Ryton TE 6 only
S - stainless steel - TE 5, TE 5.5, TE 7 and TE 8 only
H - Hastelloy C - TE-7 only

All pumps are not available in each material as indicated above - contact KTH Sales for complete details.

Note regarding decoupling magnets and specific gravity of solutions - Magnetic attraction between the motor and the impeller must be maintained at all times. Solutions with specific gravity above water may require the impeller to be trimmed to insure the torque load between the impeller and motor are maintained. Most decoupling of the magnets is caused by high specific gravity or high starting torque at startup of the pump. Starting torque is at a minimum if the pump starts with a near closed discharge valve condition. A pump starting without liquid in the discharge pipe will be the worst case regarding starting torque. It should be noted that the impeller decoupling acts as a safety feature regarding overloading of the motor - it is not always a bad thing. Contact us for suggestions to cure the problem of decoupling magnets.