44MPVH
4" Non-Clog Wastewater Pumps
4" Non-Clog Wastewater Pumps
- 3" Solids Handling
- High Head Applications
- High Efficiencies
- Capacities to 900 GPM Heads to 95 Feet
- 5, 7.5, 10 &15HP Models
Features / Benefits
- Reliable Pumping
- 2 vane, rounded port, enclosed impeller prevents solids binding.
- High efficiency design reduces pumping costs.
- Constant velocity volute extends seal and bearing life, smooth operation.
- Impeller
- Ductile iron casting for superior hardness and long life.
- Enclosed impeller provides high efficiency performance.
- Balanced pressure design extends shaft seal life, reduces solids build-up.
- Smooth, quiet operation.
- Shaft Seals
- Dual mechanical seals .....
- silicon / carbide (primary).
- carbon / ceramic (secondary).
- Motor
- Pressed stator for precise shaft and bearing alignment.
- Internal overload protection.
- Dual moisture detection probes.
- Dual ball bearings (upper and lower) and third sleeve bearing.
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- Oil-filled provides:
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- Constant bearing lubrication.
- Maximum motor cooling, even temperature distribution.
| DISCHARGE | 4" , 300# ANSI, Flange, Horizontal |
|---|---|
| LIQUID TEMPERATURE |
|
| SOLIDS HANDLING | 3" Diameter Solid Sphere |
| MOTOR HOUSING | Cast Iron, ASTM A-48, Class 30 |
| CORD CAP | Cast Iron, ASTM A-48, Class 30 |
| VOLUTE |
|
| SEAL PLATE | Cast Iron, ASTM A-48, Class 30 |
| IMPELLER |
|
| SHAFT | 416 Stainless Steel |
| SHAFT SEAL |
|
| BEARING (UPPER) | Single Row, Ball, Oil Lubricated |
| BEARING (LOWER) | Single Row, Ball, Oil Lubricated |
| HARDWARE | 300 Series Stainless Steel |
| SQUARE RINGS | Buna-N |
| CORD |
|
| CORD ENTRY |
|
| MOTOR (THREE PHASE) |
|
| OPTIONAL EQUIPMENT |
|
Non-Clog Submersible Pumps 44MPVH Series
Specifications
Pump Model - Pump shall be of the centrifugal type, KEENER GRINDER PUMPS 44 MPVH Series. The non-clog submersible pump shall feature a 2 vane enclosed impeller, with all openings within the pump large enough to pass a 3" diameter sphere. The discharge flange shall be 4", 150# ANSI standard.
Operating Conditions - The pump shall have a capacity of _____ GPM at a total head of _____ feet, and shall use a motor rated at _____ HP and 1750 RPM.
Pump Impeller - Ductile iron and threaded on a stainless steel shaft. The impeller shall be of the 2 vane, enclosed type, and provide an unobstructed passage through the volute for the solids. Vane inlet shall be rounded to prevent stringy material from catching in the vanes. Pump-out vanes shall be used on the back shroud. Impeller shall be dynamically balanced.
Seal - The motor shall be protected by Type 21, dual mechanical seal construction mounted in tandem. Primary seal shall be silicon / carbide. Secondary seal shall be silicon / carbide. The seal face shall be lapped to a flatness of one light band. A double electrode shall be mounted in the seal chamber to detect water entering the chamber through the lower seal. Water in the chamber shall cause a red light to turn on at the control box. This signal shall not stop the motor, but shall act as a warning only. Indicating service is required.
Motor - The pump motor shall be of the submersible type, rated ___ HP, 1750 RPM. The motor shall be for 60 Hz, either 230 or 460 volt, single or three phase operation. Major operating temperature must not exceed Class B ratings.
The stator winding shall be of the open type with Class H insulation. Winding housing shall be filled with a clean, high dielectric oil that lubricates bearings and seals, transferring heat from windings and rotor to the outer cast housing. Air-filled motors which do not have the superior heat dissipating capabilities of oil-filled motors shall not be considered equal.
An upper motor bearing cap shall be a separate casting for easy mounting and replacement. The motor shall have two heavy duty bail bearings to support the pump shaft, taking radial and thrust loadings. A sleeve guide bushing is mounted directly above the lower seal to take radial load and act as a flame path for the seal chamber. Ball bearings shall be designed for a minimum 50,000 hours B-10 Site. The stator shall be pressed into the motor housing. The common motor / pump shaft shall be of 416 SST, keyed to the impeller.
Motors shall have a heat sensor thermostat attached to the top end of the motor windings to stop the motor if the motor winding temperature reaches 200 degrees F. The high temperature shut-off will cause the pump to cease operation, should a control failure cause the pump to run in a dry wet well. The thermostat shall automatically reset when the motor cools to a safe operating temperature.
Pump Case - The volute case shall be cast iron and have a flanged center line discharge. Discharge flange shall be 4" ANSI, 150# standard with bolt holes around the center line.
Power Cord - The motor power and control cords shall be SJOW/SJOWA or SOOW. The cable jacket shall be sealed at the motor entrance by means of a rubber compression washer and compression nut. An epoxy filled tube shall seal the outer cable jacket and individual leads to prevent water from entering the motor housing. Individual conductor strands shall be soldered within the epoxy seat. Cords shall withstand a pull of 300 pounds.
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