The 16" 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
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
LOCKING BOLTS
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
PROBE TUBE
WATER SAMPLER VALVE
Available in Stainless Steel upon request
 |
| A |
Pitless Unit to Well Casing Connection: |
Chamfered for butt weld |
| B |
Pitless Unit with black upper case: |
17-1/4" I.D., 18" O.D. |
| C |
Discharge body minimum I.D. |
15-1/4" |
| D |
Hold-down mechanism: Locks spools in place and prevents lifting and turning during pump start-up. Two adjustable hooks on lift-out pipe hook into sides of pitless case |
|
| E |
Lift-out pipe with lifting bail |
5" weld assembly designed for a 103,000 lb load |
| G |
Tap Size |
2" NPT |
| H |
Well Vent |
Screws into a 2-1/2" NPT Tap |
| I |
Conduit tappings |
2" & 1" NPT std. Also available with single 2", 3", or 4" NPT |
| J |
Depth tester block tappings
|
1/4" NPT |
| |
|
|
| K |
Pressure zone tappings |
(1) 3/8" NPT |
| L |
MOTOR CABLE PASSAGES - THROUGH SPOOL (Section AA-AA) - Will clear rigid rod parallel to casing
|
1.93"
|
| M |
|
4-9/16" |
| N |
Some Restrictions Apply |
1-1/8" |
| O |
|
2" |
| |
|
|
| PP |
Dimension from center of discharge outlet to bottom of weld nipple |
13-11/16" |
| Q |
Distance from ground level to top of pitless case |
12" |
| R |
Distance from ground level to top of screened well vent |
28-1/4" |
| S |
Water Sampler Tapping |
3/4" NPT |
| T |
SPOOL TO DROP PIPE CONNECTION |
8" male NPT tapping spool designed for 103,000 load |
| U |
Dimension from center of discharge outlet to bottom of spool |
12-5/16" |
| V |
Discharge connection tapping size |
8" NPT |
| W |
Dimension from center of well casing to the end of the discharge outlet |
11" |
| X |
SPOOL ASSEMBLY |
|
| Y |
Pitless case wall thickness |
.375" |
| Z |
SEAL CAP - watertight cap bolts into gasketed surface securing around the pitless casing and comes installed with 2-1/2" screened well vent |
|
| BB |
Overall length of seal cap |
25-3/8" |
| CC |
|
6-1/4" |
| DD |
|
20-1/8" |
|
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 - ductile iron, lead-free galvanized.
Discharge Body - ductile 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. |
Std. Model
|
|
3' to 8'
|
PS
|
16"
|
18"
|
W
|
B
|
W
|
E0
|
8
|
T
|
8 |
E
|
|
 |
|
All units have a watertight cap with screened vent.
This Monitor Pitless Units listed above is equipped with the following types of Spool:
|
| |
Spool without check valves, Figure No. 2
Spool without check valves for Flowing Well, Figure 4
|
| |
| Note: Optional Cable Seals available. |
|
|
|
Key No.
|
Ordering Number
|
Description
|
Quantity
|
| |
FIGURE 1
|
|
|
1
|
PS155
|
Protected Screen Vent 2 1/2" NPT
|
1
|
|
2
|
PS365
|
Pipe Nipple, 2 1/2" NPT x 6" L
|
1
|
|
3
|
UJ50
|
Pipe Plug, 2" NPT
|
1
|
|
4
|
UG54
|
Pipe Plug, 1 1/2" NPt
|
1
|
|
5
|
UM1
|
Seal Cap
|
1
|
|
6
|
PC286S
|
Hex Nut, 5/8-11NC
|
12
|
| 7 |
UM72 |
Gasket |
1 |
| |
FIGURE 2
|
|
|
8
|
--------
|
Spool & lift-out assembly w/o check valves. Order by bury depth
|
1
|
|
9
|
PC417
|
Washer
|
4
|
|
10
|
UM7
|
Hold-down hook
|
4
|
|
11
|
UN122
|
Pipe plug 3/8" - 18NPT
|
1
|
|
12
|
E0188E
|
Spool without check valves
|
1
|
|
13
|
UM15
|
O-Ring
|
2
|
| |
FIGURE 3
|
|
|
14
|
UN81
|
Washer
|
8 |
|
15
|
UN73S
|
Hex head cap screw, 5/8-11NC x 4 3/4"L
|
6
|
|
16
|
UM60E
|
Discharge body
|
1
|
|
21
|
LK4S
|
Lock Bolt - 5/8" x 4 3/4" L
|
2
|
| |
FIGURE 4
|
|
|
17
|
UM8S4EF
|
Flowing Well Spool without check valves (E0188EFR)
|
1
|
|
18
|
UN122
|
Pipe Plug - 3/8"-18NPT
|
1 |
|
19
|
--------
|
Spool Cable Seals (See Spools & Cable Seals)
|
|
|
22
|
UN120
|
Pipe Plug 1"
|
1
|
|
|
| |
 |
|
DESCRIPTION - ORDERING NUMBERS
|
|
A
|
3
|
 Bury Depth in Feet |
| |
PS
|
Pitless Unit for Submersible Pump |
|
B
|
12
|
Well Size - Ins. |
|
C
|
14
|
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
|
0
|
No. of Check valves: (0 or 2) |
|
H
|
6
|
Drop Pipe I.D. Ins. |
|
|
|
J
|
6
|
Discharge I.D. Ins. |
| |
E |
Standard Industrial Unit |
|
K
|
S
|
Elec. Cable Seal (S)
O.D. 3 Wire____O.D. Grounding Wire____ |
 |
|
Flowing Well (F) |
| |
Probe Tube (P) |
| |
Water Sampler Valve (H) |
| |
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
3PS1618WBWE08T8ES |
|
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. |
|
16
|
B. This numeral indicates the well casing size, 16 ” I.D. |
|
18
|
C. This numeral indicates the upper pitless case size, 18” I.D. |
|
W
|
D. Indicates the attachment to the well casing is a welded joint.("N" for KwiKonect - 6" I.D. & 8" I.D. only). |
|
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. |
|
0
|
Indicates the type of spool which the pitless unit has. In this case it is a spool having two silent check valves. |
|
8
|
H. Indicates the size of drop pipe in inches. |
|
T
|
I. Indicates the discharge connection is threaded. |
|
8
|
J. Indicates the size of discharge pipe in inches. |
| E |
Indicates Standard Industrial |
|
S
|
K. Sealed Conduit Connection. (Optional) |
|
|
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