The Monitor 10" Turbine Pitless Unit, for line shaft turbine pumps, forms a watertight extension of the water well casing. While the upper casing extension is 12 inches or more above grade, the Turbine Pitless Unit discharge is buried below grade for a sanitary transfer of water to a water tower or water treatment plant. The Turbine Pitless Unit upper casing is flanged to receive a motor. Once the motor assembly is made to the Turbine Pitless Unit, a complete assembly is formed and a watertight seal is formed.
Options for turbine pitless units include: epoxy coating, flanged upper casing, and water sampler.
The Monitor Turbine Pitless Unit bearings are water lubricated.
CORROSION PROTECTION — all water passages are either hot-dipped lead free galvanized or constructed of corrosion resistant material for longer life and less maintenance costs.
O–RING SEAL PROTECTION — Monitor seal protection prevents seal damage during installation and service, eliminating potential service costs.
FROST PROOF — No Heating is required. All water passages are below the frost line.
QUICK TO INSTALL — A quality booster pump installation can be made easily and economically without delay for masonry or building construction, creating a cost savings solution.
EASY TO SERVICE — Well cap can be removed without disconnecting cables. O-ring seals on spool permit withdrawal of the entire inner assembly simply by lifting. Replacement is equally simple. Spool support eliminates vertical adjustment allowing service above ground.
RELIABLE SEALS — Neoprene O-Rings between accurately machined hot-dipped lead free galvanized surfaces on the spool and within the unit provide positive seals to ensure maintenance free performance.
WATERTIGHT WELL CAP — Designed to permit removal without disconnecting cables. Watertight cable and conduit sealing are available for additional protection.
HOLD-DOWN — Supplied with each unit. Hold-down pipe also serves as lift-out pipe for installation and servicing.
ALTERNATIVE DISCHARGE & INLET CONNECTIONS — Are available to meet your projects specifications.
Booster Units are available through 36” tank sizes upon request
All units are available in Stainless Steel upon request
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| COMPONENT MATERIALS |
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| A |
Unit minimum I.D. 10 in.: chamfered for butt weld to well casing. |
| B |
Pitless Unit with Black Upper Case Std.: 13-1/4 in. I.D., 14 in. O.D. |
| C |
2-1/2 in. NPT Tapping for Well Vent. |
| D |
2-1/2 in. Protected Screen Well Vent. |
| E |
Lift-Out Pipe: 5 in. IPS. |
| F |
Turbine Motor having a maximum base diameter of 12 in. (Supplied by others) |
| G |
Motor Mount Access Openings: (2) openings measuring 9 in. wide x 8-1/2 in. high. |
| H |
6-7/8 in. |
| I |
15 in. |
| J |
12 in. |
| K |
Shaft Bearing Housing. |
| L |
1 in. N.P.T. Tapping ported to Column Pipe. |
| M |
Shaft Bearings (Supplied by pump manufacturer): Total length of bearing to be 10 in. and a maximum O.D. of 1-5/8 in. |
| N |
3/4 in. drain. |
| O |
Dimension from center of Discharge Outlet to bottom of Discharge Body: 15-3/4 in. |
| P |
1-1/2 in. NPT Tapping for optional Water Sampler. |
| Q |
1 in. NPT Tapping. |
| R |
Rabbet Fit for Upper Grease Seal Bearing Housing: Minimum O.D. of 3 in. and maximum O.D. of 4 in.; maximum Bolt Circle of Bearing Housing - 5-1/4 in. (Bearing & Bearing Housing supplied by others) |
| S |
1 in. |
| T |
1-1/2 in. |
| U |
4 in. |
| W |
21-3/8 in. |
| X |
9-5/16 in. |
| Y |
Lifting Lug: (2) Lugs for inserting or removal of inner well parts. |
| Z |
SPOOL TO DROP PIPE CONNECTION SIZES: |
4 in. NPT |
5 in. NPT |
6 in. NPT |
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The Standard Spool is designed for a 65,000 lb.maximum load.
Spools are available to sustain higher loads. |
(3/4 Taper) |
(3/4 Taper) |
(3/4 Taper) |
| AA |
Dimension from center of Discharge Outlet to bottom of Spool: |
13-7/16 in. |
14-7/16 in. |
14-1/2 in. |
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DISCHARGE CONNECTIONS & SIZES: |
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For [BB] Butt Weld (IPS): |
4 in. I.D. |
5 in. I.D. |
6 in. I.D. |
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For [CC] Flanged (ASA Std. 150 lb.): |
4 in. I.D. |
5 in. I.D. |
6 in. I.D. |
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For [DD] Threaded Nipple (NPT): |
4 in. I.D. |
5 in. I.D. |
6 in. I.D. |
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For [EE] Transition Sleeve (IPS): |
4 in. I.D. |
N.A. |
6 in. I.D. |
| FF |
Dimension from center of Well Casing to the end of Discharge Outlet. |
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With [BB] Butt Weld Discharge: |
18-1/2 in. |
18-1/2 in. |
12-15/16 in. |
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With [CC] Flanged Discharge: |
21-1/2 in. |
22 in. |
16-7/16 in. |
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With [DD] Threaded Discharge: |
21-7/16 in. |
21-7/16 in. |
16-15/16 in. |
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With [EE] Transition Sleeve Discharge: |
24-1/2 in. |
N.A. |
18-15/16 in. |
| GG |
SPOOL ASSEMBLY |
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Area of Water Passage(s): |
12.56 sq. in. |
25.12 sq. in. |
25.12 sq. in. |
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Percent Area of Water Passage(s) to Area of Drop Pipe: |
100% |
125% |
87% |
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Specifications are Subject to Change Without Notice.
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DESCRIPTION - ORDERING NUMBERS
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A
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3
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 Bury Depth in Feet |
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PT
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Pitless Unit for Turbine Pump |
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B
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10
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Well Size - Ins. |
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C
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14
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Upper Case Size - Ins. |
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D
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W
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Attachment to Well Casing-Welded |
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E
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B
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Black Upper Case |
| F |
E
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Pressure Equalizing Spool Passages |
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0
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Standard Spool |
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G
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6
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Drop Pipe I.D. Ins. (4", 5" or 6”) |
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Accessory - Transition Sleeve |
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I
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6
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Discharge I.D. Ins. (4", 5”, or 6”) |
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W
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Waterlube |
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 |
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Special Provision (X) |
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UNITS AVAILABLE BY QUOTATION ONLY
10” THROUGH 20” WELL SIZES
EXPLANATION OF PITLESS UNIT
ORDERING NUMBERS
The diagram illustrates the meaning of the various letters and numerals used in Monitor Turbine Pitless Unit ordering numbers. A typical order number and the pitless unit it stands for are shown.
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Typical Order Number
3PT1014WBWE06F6W |
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3
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A. The first numeral in the order number indicates the bury depth, in feet, of the unit. Bury depth on all units is measured from the center of the discharge line to ground level. The top of the pitless case extends 12” above ground level as is required by many codes.
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PT
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The type of pump the pitless unit is designed for. The unit shown is a PT for Line Shaft Turbine Pumps. |
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10
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B. The well casing size is for 10" wells. |
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14
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C. The upper pitless case size, 14” |
|
W
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D. The attachment to the well casing is a welded joint. |
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B
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E. The upper pitless case is black pipe. |
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E
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F. The spool has pressure equalizing passages. |
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0
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The type of spool has no silent check valves. |
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6
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G. The size of column pipe in inches. |
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F
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H. The discharge connection is Flanged. |
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6
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I. The size of discharge pipe in inches. |
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W
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The type of Line Shaft Turbine the unit is designed for, "W" water-lubricated. |
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