16" I.D. Standard Industrial Pitless Units - NSF 61 Certified

16 inch Standard Pitless Unit Click the images to view full size

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.

 
  • Features
  • Specifications
  • Parts Breakdown
  • Component Materials
  • Ordering Instructions

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

16" Pitless Unit Specifications
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

16" Pitless Unit Parts Breakdown

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
16" Pitless Unit Ordering Inst
DESCRIPTION - ORDERING NUMBERS
A
3
Bury Depth in Feet
PS
Pitless Unit for Submersible Pump
B
12
spacerWell Size - Ins.
C
14
spacerUpper Case Size - Ins.
D
W
spacerAttachment to Well Casing-Welded
E
B
spacerBlack Upper Case
F
W
spacerWatertight Cap w/Screened Air Vent
E
spacerPressure Equalizing Spool Passages
G
0
spacerNo. of Check valves: (0 or 2)
H
6
spacerDrop Pipe I.D. Ins.
I
T spacerThreaded NPT Std. spacer
spacerConnection
Discharge
Connections
(Select One)
spacerFlange, ASA 150#
spacerWelded
spacerMech. Joint w/transition
spacersleeve
J
6
spacerDischarge I.D. Ins.
E Standard Industrial Unit
K
S
spacerElec. Cable Seal (S)
spacerO.D. 3 Wire____O.D. Grounding Wire____
spacerFlowing Well (F)
Probe Tube (P)
Water Sampler Valve (H)
spacerSpecial 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)