The 6.6" Standard Pitless Unit is manufactured using a cast spool and discharge Body. The spool and discharge body are galvanized using Lead-Free Zinc for long term corrosion protection. Monitor Standard industrial pitless units are shipped as complete factory pressure tested pitless unit including the Watertight Premium Well Cap, Upper Bury Depth Casing Extension, Discharge Body, Spool, Discharge and Drop Connection, Lift-Out Bail, and Hold-Down Assembly.
CORROSION PROTECTION — all water passages are either hot-dipped lead free galvanized or constructed of corrosion resistant material
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 and any possibility of dropping the inner assembly into the wall.
RELIABLE SEAL — Neoprene O-Rings between accurately machined hot-dipped lead free galvanized surfaces on the spool and within the unit provide positive seals.
O–RING SEAL PROTECTION — Monitor seal protection prevents seal damage during installation and service.
FROST PROOF — No Heating is required
QUICK TO INSTALL — A quality pump installation can be made easily and economically without delay for masonry or building construction
ALTERNATIVE SPOOLS — Spools are available plan (EO) or with silent check valves (E2-Double)
WATERTIGHT WELL CAP WITH SCREENED AIR VENT — Designed to permit removal without disconnecting cables. Watertight cable and conduit sealing is optional
HOLD-DOWN — Supplied with each unit. Hold-down pipe also serves as lift-out pipe for installation and servicing.
REINFORCED O-RING LANDS — Cast in to prevent discharge body from becoming out of round
DEPTH TEST BLOCK — Standard on all units
OPTIONS
SEALED CONDUIT CONNECTION — Watertight conduit seals made of neoprene are available for most common cable sizes. (Round Wire Only)
EPOXY PAINTING — Can be done, if required for extra protection in certain soil types
ADDITIONAL TAPPING IN SPOOL
TRANSITION SLEVE FOR MECHANICAL JOINT DISCHARGE
FLOWING WELL UNITS
Available in Stainless Steel upon request
 |
| A |
Screened Well Vent tap size: |
1-1/2” NPT |
| B |
Seal Cap: The Watertight cap bolts to a compression seal ring securing around the pitless case and comes with the screened well vent installed. |
|
| C |
Conduit Tapping size:
Watertight conduit seals for most common cable sizes are available for watertight cap. |
1-1/2” NPT |
| D |
Depth Tester Tapping: |
1/4” NPT |
| E |
Distance from ground level to top of Pitless Case: |
12” |
| G |
Distance from ground level to top of
Screened Well Vent: |
19-1/2” |
| H |
Pitless Case I.D. size: |
7” |
| I |
Pitless Case wall thickness: |
.300” |
| J |
“Hold-Down” - “Lift-Out” Mechanism
Three set screws in a spider atop the “Hold-Down” - “Lift-Out” pipe brace against the interior of the pitless casing, locking the spool in place.
Hold-Down, Lift-Out pipe size (Schedule 80):
Designed “Lift-Out” Mechanism load:
DISCHARGE BODY - THREADED |
2” NPT
15,000 lbs. |
| K |
Discharge Body outside diameter: |
9-11/16” |
| K |
Discharge Body length: |
11-1/4” |
| L |
Pitless Unit minimum inside diameter.: |
6-3/8” |
| M |
Discharge Connection Tapping size: |
3” NPT |
| N |
Pitless Unit to well casing connection I.D.: |
6.6” Weld |
| O |
SPOOL ASSEMBLY
Spool Design Load: |
15,000 lbs. |
| P |
MOTOR CABLE PASSAGES THROUGH SPOOL |
13/16” |
| Q |
|
1-3/4” |
| R |
Spool to Drop Pipe Connection: |
3” NPT |
| S |
Pressure zone tapping: 3/8” NPT: |
(2) available |
| T |
Dimension from center of discharge outlet
to bottom of weld nipple: |
9-3/8” |
| U |
Overall length of seal cap: |
12-7/8” |
| V |
Dimension from center of discharge to
bottom of discharge body: |
7-3/4” |
| W |
Dimension from center of well casing to
end of discharge outlet: |
5-25/32” |
|
Specifications are Subject to Change Without Notice.
*For Flowing Well spool concept, see Booster Station section.
*Optional flange, weld or mechanical joint available upon request.
Note: Pitless units conform to the Recommended Standards for Water works, Great Lakes Upper Mississippi River Board of State Public Health & Environmental Managers and Water Systems Council PAS-97 (04) Standards.
COMPONENT MATERIALS
Well Vent - cast iron, green enamel finish.
Cap & Conduit Box - cast iron, green enamel finish.
Hold-Down Spider - cast iron, green enamel finish.
Hold-Down Pipe, 3” - steel Sch. 80, black.
Pitless Case - steel, black.
Spool - cast iron, lead-free galvanized.
Discharge Body - cast iron, lead-free galvanized.
Check Valve Body & Arms - brass.
Check Valve Seat - Brass.
Check Valve Spring - Monel.
Compression Seal Ring & Check Valve Facing - Neoprene.
Electrical Conduit Cable Seal - Neoprene.
Maximum Rated Discharge Pressure - 300PSI
The drawings and parts list apply to the model numbers listed below.
See drawing.
Note: Add (F) at end of model number for flowing well unit. |
|
|
|
Bury Depth
|
Unit
|
Well Size Tap
|
Case Size
|
Well Casing Attach.
|
Upper Case
|
Cap Style
|
Spool
|
Drop Pipe I.D.
|
Drop Discharge Conn.
|
Discharge I.D.
|
|
1’ & Up
|
PS
|
6.6”
|
7”
|
W
|
B
|
W
|
E0
|
3
|
T
|
3
|
|
1’ & Up
|
PS
|
6.6”
|
7”
|
W
|
B
|
W
|
E2
|
3
|
T
|
3
|
|
 |
|
All units have a watertight cap with screened vent.
All Industrial Cap Bolts are made of Stainless Steel
Monitor Pitless Units listed above are equipped with
one of the following types of Spools:
|
| |
E2 Spool with check valves, Figure No.2
E0 Spool without check valves, Figure No. 3
E2 Spool with check valves for Flowing Well, Figure 4
E0 Spool without check valves for Flowing Well, Figure 4 |
| |
| Note: Optional Cable Seals available. |
|
|
|
Key No.
|
Ordering Number
|
Description
|
Quantity
|
| |
FIGURE 1
|
|
|
-----
|
7WPSM
|
Watertight Cap, includes Key Nos. 1-12
|
|
|
-----
|
WBAG2
|
Pkg. of S.S. bolts & Nuts for Cap
|
1
|
|
1
|
PS150
|
Vent Assembly
|
1
|
|
2
|
PS263
|
Pipe Nipple
|
1
|
|
3
|
PS217
|
Seal Cap & Plug Assembly
|
1
|
|
4
|
PS93S
|
Machine Bolt, 3/8-16NC x 2 1/2” L.
|
1
|
|
5
|
PS197
|
Gasket
|
1
|
|
6
|
PS377
|
Retainer Ring
|
1
|
|
7
|
PS187
|
Depression Ring
|
1
|
|
8
|
PS94S
|
Machine Bolt, 3/8-16NC x 3 1/2” L.
|
6
|
|
9
|
PS132S
|
Machine Bolt, 5/16-18NC x 2” L.
|
2
|
|
10
|
PS167
|
Seal Ring
|
1
|
|
11
|
UB17S
|
Hex Nut, 3/8-16NC
|
7
|
|
12
|
PC434S
|
Hex Nut, 5/16-18NC
|
2
|
| |
FIGURE 2
|
|
|
13
|
UC129
|
Hold-Down Assembly, includes Key Nos. 13 & 14 assembled
|
1
|
|
14
|
UC139
|
Set Screw, 7/16-14NC X 1 3/4” long
|
3
|
|
15
|
UC299
|
Hinge Pin
|
2
|
|
16
|
UC127
|
Hinge Pin Gasket
|
2
|
|
17
|
UN122
|
Pipe plug, 3/8-18 NPT
|
2
|
|
18
|
UC301
|
Valve Rocker Arm
|
4
|
|
19
|
UC302
|
Valve Spring
|
2
|
|
20
|
UC300
|
Center Coil Support
|
2
|
|
21
|
UC296
|
Check Valve Assembly, includes Key Nos. 22-25 assembled
|
|
|
22
|
UC292
|
Valve Body
|
2
|
|
23
|
UC295
|
Rubber Check Valve Facing
|
2
|
|
24
|
PS158
|
Brass Washer
|
2
|
|
25
|
PS159
|
Brass Nut, 3/8-16NC x 1/4” thick
|
2
|
|
26
|
UC293
|
Check Valve Seat
|
2
|
|
27
|
UC290
|
Spool only
|
1
|
|
27
|
7E2PS3
|
Alternate spool with check valves includes Key Nos. 15-28 assembled.
|
|
|
28
|
UC15
|
“O” Ring
|
2
|
|
30
|
UC391
|
Discharge Body
|
1
|
|
31
|
7AWN
|
Welding Nipple
|
1
|
| |
FIGURE 3
|
|
|
32
|
7E0PS3
|
Spool without check valves includes Key Nos. 17, 28, 32 assembled
|
|
|
32
|
UC142
|
Spool, also includes Key No. 17 assembled.
|
1
|
| |
FIGURE 4
|
|
|
-----
|
UC392
|
Flowing Well Spool with check valves (7E2PS3F - Boxed)
|
1
|
|
34
|
-------
|
Cable Seals (See Spools & Cable Seals)
|
|
|
35
|
UC393
|
Flowing Well Spool w/o check valves (7E0PS3F - Boxed)
|
1
|
|
|
| |
 |
|
DESCRIPTION - ORDERING NUMBERS
|
|
A
|
3
|
 Bury Depth in Feet |
| |
PS
|
Pitless Unit for Submersible Pump |
|
B
|
6
|
Well Size - Ins. |
|
C
|
7
|
Upper Case Size - Ins. |
|
D
|
W
|
Attachment to Well Casing-Welded |
|
E
|
B
|
Black Upper Case |
|
F
|
W
|
Watertight Cap w/Screened Air Vent |
| |
E
|
Pressure Equalizing Spool Passages |
|
G
|
2
|
No. of Check valves: (0 or 2) |
|
H
|
3
|
Drop Pipe I.D. Ins. |
|
|
|
J
|
3
|
Discharge I.D. Ins. |
|
K
|
S
|
Elec. Cable Seal (S)
O.D. 3 Wire____O.D. Grounding Wire____ |
 |
|
Flowing Well (F) |
| |
Special Provision (X) |
|
|
|
|
|
|
EXPLANATION OF PITLESS UNIT
ORDERING NUMBERS
The diagram illustrates the meaning of the various letters and numerals used in Monitor Custom Industrial Pitless Unit ordering numbers. A typical order number and the pitless unit it stands for are shown.
|
Typical Order Number
3PS6.67WBWE23T3S |
|
3
|
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. However, any length can be manufactured.
|
|
PS
|
These letters indicate the type of pump the pitless unit is designed for. The unit shown is a PS for submersible pumps. |
|
6.6
|
B. This numeral indicates the well casing size, 6.6 ” I.D. |
|
7
|
C. This numeral indicates the upper pitless case size, 7” I.D. |
|
W
|
D. Indicates the attachment to the well casing is a welded joint. |
|
B
|
E. Indicates the upper pitless case is black pipe. |
|
W
|
F. Indicates the unit has a watertight cap with screened vent installed. |
|
E
|
G. Indicates spool has pressure equalizing passages, for venting well. |
|
2
|
This numeral indicates the type of spool which the pitless unit has. In this case it is a spool having two silent check valves. |
|
3
|
H. Indicates the size of drop pipe in inches. |
|
T
|
I. Indicates the discharge connection is threaded. |
|
3
|
J. Indicates the size of discharge pipe in inches. |
|
S
|
K. Sealed Conduit Connection. (Optional) |
|
|
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