Installation, operation and service instructions [PDF] (4 pages)
- Updated: 01.04.2026
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Metering Faucet
S-71, S-72, S-73, S-74 Series
INSTALLATION, OPERATION AND SERVICE INSTRUCTIONS
IMPORTANT:
• Water lines MUST be thoroughly flushed BEFORE and
AFTER installing the faucet to prevent foreign matter,
i.e. copper chips, sand, stones, etc. from clogging and
possibly damaging the sealing surface of the cartridge.
• Integral supply check included (S-73 and S-74 series only).
INSTALLATION:
(Supply stop valves must have a 3/8” O.D. compression outlet.)
1. Apply a bead of sealant to the underside of the faucet
escutcheon.
2. (S-72 and S-74 series): Install U-channel spacers (KN-23),
spacers (KN-26) and nuts (L-36) loosely on mounting bolts.
Position deck plate (SPF-28) and mounting gasket (SPF-27)
under base through sink with flat in center hole towards
the back of sink basin. Secure by tightening nuts from
underside. Insert faucet supply through deck plate aligning
flat on faucet body above threaded shank with flat in deck
plate center hole. Secure faucet to deck plate by placing the
washer (K-60), locknut (SPF-38) and hex nut (SPF-26) on the
supply shank. Hand tighten only! Adjust position of faucet
to achieve optimum spray into basin. Tighten faucet securely
to basin or deck plate.
(S-71 and S-73 series): Insert faucet with flange (SPF-5)
through hole in basin. Secure faucet to basin by placing the
washer (K-60), locknut (SPF-38) and hex nut (SPF-26) on the
supply shank. Hand tighten only! Adjust position of faucet
to achieve optimum spray into basin. Tighten faucet securely
to basin.
3. Connect 4-10C mixing valve to bottom of supply shank using
supply nut provided (S-73 and S-74 series only). Make
connection to water supplies using the appropriate connectors.
4. Install grid drain (if applicable) by removing flange and tube
from drain body and inserting tail piece into trap. Apply
bead of sealant to underside of flange and insert flange and
tube through drain opening. Place bottom gasket mounting
washer and mounting nut onto flange and tube assembly.
Screw drain body on tube until tight.
5. To flush faucet, remove spray outlet, using vandal proof
wrench (LL-60K) provided with faucet. Open cold supply and
depress handle holding down for ten seconds (S-71 and
S-72 series only). Open hot supply and repeat above pro-
cedure (S-73 and S-74 series only). Allow faucet to shut
off and replace spray outlet.
Temperature adjustment (S-73 and S-74 series only)
Make sure the faucet has been properly installed and thor-
oughly flushed. Set the mixing valve (4-10C) to the desired
maximum temperature by inserting a 1/4” hex socket key
into the mating hex socket in center of valve and turning
counter clockwise for hotter, clockwise for colder. 110ºF
recommended unless otherwise specified.
Adjustment of cycle time
After faucet has been operated through a number of cycles
and supply water temperature is at designed level, adjust-
ment of this feature can be made as follows.
Loosen set screw (LL-27) in cap (SPF-104), remove cap. To
increase time, remove one or more of the washers (LL-28) on
stem. To reduce time, add washers. When desired time cycle
is achieved replace cap and tighten set screw.
6 "
1
2
4 "
3
8
2 "
7
8
2 "
1
8
2 " with optional 3 hole deck plate
1
2
1 "
max.
1
8
7 "
8
1 "
2
min.
deck hole
4"
6"
optional 3 hole deck plate
2"
4"
15˚
1"-14 NPSM
2
"-20 UNC
with spacer
1 "
1
8
without spacer
spacer
1
4
S-71/S-73
S-72/S-74
K-60
Washer
L-42
Coupling nut
LL-1
Control spindle
LL-1A
Control cartridge
LL-1B
Control cartridge for quick-closing
LL-2A
Cycle spindle assembly
LL-3N
Upper housing
LL-4
Piston washer screw
LL-8
Cycle spindle guide
LL-11
Piston cylinder
LL-12
Piston
LL-16
Shut-off seat
LL-24
Control rod
LL-27
Handle set screw
LL-28
Cycle time washers
LL-31
Retaining ring
LL-32
Piston spring
LL-35
Thrust washer
LL-37
Shut-off washer
LL-44
Spindle guide large o-ring
LL-45
Shut-off seat o-ring
LL-46
Control spindle small o-ring
LL-47
Control spindle large o-ring
LL-48
Upper housing o-rings (three)
LL-49
Piston o-ring
LL-75
Spindle guide huva cup
LL-76
Huva cup retainer
LL-101
In-line screen
LN-100
Aerator (vandal resistant 0.5 gpm)
LN-101
Aerator (vandal resistant)
LT-4A
Piston assembly
MV-10
Rubber washer
MV-107
Checks
SPF-5
Flange
SPF-26
Hex nut
SPF-38
Lock washer
SPF-103
Bushing
SPF-104
Cap
SPF-104C
Cap (cold)
SPF-104H
Cap (hot)
SPF-107
Spout assembly
4-10C
Mechanical mixing valve
Tools required for disassembly
Order MF-KIT-W, consisting of:
LL-27W
3/32" hex socket key to remove
handle set screw
LL-60K
Spray outlet wrench to remove
spray outlet (included with faucet)
Other standard tools required:
Adjustable or 1" and 1/4" open end wrench, pliers,
5/32" hex socket key
Repair Kit LL consists of:
LL-4, LL-8, LL-13, LL-24, LL-31, LL-33, LL-35, LL-37,
LL-42, LL-43, LL-44, LL-45, LL-46, LL-47, LL-48, LL-49,
LL-73, LL-75, LL-76.
LL-27
LL-28
SPF-103
SPF-107
LN-100
LN-101
LL-101
SPF-5
K-60
SPF-38
SPF-26
L-42 (S-71 only)
3/32" HEX SOCKET KEY
SPF-104
MV-10
4-10C
LL-3N
LL-48
LL-35
LL-1A
or
LL-1B
LL-1
LL-46
LL-47
LL-2A
LL-44
LL-8
LL-75
LL-76
LL-45
LL-16
LT-4A
LL-32
LL-31
LL-11
LL-4
LL-37
LL-24
LL-49
LL-12
LT-4A
LL-1A
or
LL-1B
MV-107
S-73 ONLY
S-71 and S-73 Series
K-60
Washer
L-42
Coupling nut
LL-1
Control spindle
LL-1A
Control cartridge
LL-1B
Control cartridge for quick-closing
LL-2A
Cycle spindle assembly
LL-3N
Upper housing
LL-4
Piston washer screw
LL-8
Cycle spindle guide
LL-11
Piston cylinder
LL-12
Piston
LL-16
Shut-off seat
LL-24
Control rod
LL-27
Handle set screw
LL-28
Cycle time washers
LL-31
Retaining ring
LL-32
Piston spring
LL-35
Thrust washer
LL-37
Shut-off washer
LL-44
Spindle guide large o-ring
LL-45
Shut-off seat o-ring
LL-46
Control spindle small o-ring
LL-47
Control spindle large o-ring
LL-48
Upper housing o-rings (three)
LL-49
Piston o-ring
LL-75
Spindle guide huva cup
LL-76
Huva cup retainer
LL-101
In-line screen
LN-100
Aerator (vandal resistant 0.5 gpm)
LN-101
Aerator (vandal resistant)
LT-4A
Piston assembly
MV-10
Rubber washer
MV-107
Checks
SPF-26
Hex nut
SPF-27
Deck plate gasket
SPF-28
Deck plate
SPF-38
Lock washer
SPF-103
Bushing
SPF-104
Cap
SPF-107
Spout assembly
SPF-KIT
Mounting Kit
4-10C
Mechanical mixing valve
Tools required for disassembly
Order MF-KIT-W, consisting of:
LL-27W
3/32" hex socket key to remove
handle set screw
LL-60K
Spray outlet wrench to remove
spray outlet (included with faucet)
Other standard tools required:
Adjustable or 1" and 1/4" open end wrench, pliers,
5/32" hex socket key, 7/16" open end wrench
Repair Kit LL consists of:
LL-4, LL-8, LL-13, LL-24, LL-31, LL-33, LL-35, LL-37,
LL-42, LL-43, LL-44, LL-45, LL-46, LL-47, LL-48, LL-49,
LL-73, LL-75, LL-76.
MV-10
4-10C
MV-107
S-74 ONLY
3/32" HEX SOCKET KEY
SPF-104
LL-3N
LL-48
LL-35
LL-1A
or
LL-1B
LL-1
LL-46
LL-47
LL-2A
LL-44
LL-8
LL-75
LL-76
LL-45
LL-16
LT-4A
LL-32
LL-31
LL-11
LL-4
LL-37
LL-24
LL-49
LL-12
LT-4A
LL-1A
or
LL-1B
LL-27
LL-28
SPF-103
SPF-107
LN-100
LN-101
LL-101
SPF-28
SPF-27
K-60
KN-23
KN-26
SPF-KIT
L-36
SPF-38
SPF-26
L-42 (S-72 only)
S-72 and S-74 Series
SYMMONS INDUSTRIES, INC.
31 Brooks Drive, Braintree, MA 02184-3804
TEL: 1-800-SYMMONS, (781) 848-2250 FAX: 1-800-961-9621, (781) 843-3849
Web site: www.symmons.com
© 1998-2002 Symmons Industries, Inc. Printed in U.S.A. 102102
ZV-320 3-Hole
ZV-321 Folded
1.
General maintenance may require the repair or replacement of the car-
tridge unit.
2.
Shut off water supply to the faucet.
3.
Remove cap (SPF-104) by loosening allen screw with 3/32” hex socket
key.
4.
Remove cycle time washers (LL-28).
5.
Using an adjustable wrench, loosen bushing (SPF-103). Remove cartridge
assembly from faucet body.
6.
Slide the upper housing (LL-3N off control cartridge (LL-1A).
7.
Control cartridge (LL-1A) can be either replaced or repaired at this point.
Disassemble cartridge by opening retaining ring (LL-31) and sliding down
piston cylinder (LL-11).
8.
Ordinary service may only require the rebuilding of the cartridge using
the replacement o-rings and washers from KIT-LL.
9.
Reassemble, reversing the above procedures.
SERVICE
TROUBLE SHOOTING CHART
Symmons warrants to the original purchaser that any Symmons product when used in industrial,
commercial or business use will be free of defects in material and workmanship during normal
use for a period of 5 years from the date of purchase. At our option, we will either have you send
the defective part or product prepaid to us for inspection, or we may elect to send you the
replacement part or product without investigation. A replacement for any defective part will be
supplied FREE OF CHARGE for installation by the purchaser. Defect or damage caused by the use
of replacement parts other than Symmons Genuine Replacement Parts will void this warranty.
This warranty excludes product damage due to installation error, product abuse, or product
misuse whether performed by a contractor, service company or yourself.
Damage to the chrome and/or other decorative finishes on Symmons products may be a result
of improper handling or abusive treatment. Finishes should only be cleaned with a soft, damp
cloth or sponge. Use of polish, abrasive cleaners, solvents, or acid cleaners will damage the
finish and void this warranty.
There are no other express warranties on this product and ALL WARRANTIES OF
MERCHANTABILITY AND OTHER IMPLIED WARRANTIES ARE LIMITED IN ACCORDANCE WITH
APPLICABLE LAW. SYMMONS INDUSTRIES, INC., EXPRESSLY DISCLAIMS CONTINGENT
LIABILITY AND CONSEQUENTIAL DAMAGE OF EVERY KIND. Since some states do not allow
limitations on how long an implied warranty lasts or an exclusion or limitation of incidental
or consequential damages the above limitation or exclusion may not be applicable. This
warranty gives specific legal rights. Other rights may vary from state to state.
To obtain warranty service, write to Symmons Industries, Inc., 31 Brooks Drive, Braintree, MA
02184-3804 or call our Customer Service Department at 1-800-SYMMONS. If writing to us,
please include proof of purchase, the model number of the product with a brief description
of the problem, your name, address and phone number.
5-Year Limited Commercial Warranty
Problem
Cause
Solution (Follow service instructions)
Faucet runs too long or too short
Timing
Remove handle - then add washers (LL-28)
to stem to shorten time or remove washers
to lengthen time.
Faucet drips
Seat washer worn or foreign matter (chips,
dirt, solder, etc.) is between washer and
seat surface.
Disassemble cartridge and remove piston
(Lt-4A). Unscrew LL-4 and clean seat washer
(LL-37). Checks S.S. pin (LL-24) for burr then
reassemble.
Faucet runs constantly
Seat washer not closing on seat surface or
seat washer and/or seat surface worn.
Remove piston (LT-4A) and spring (LL-32).
Check for burr on pin (LL-24) and check
spring. Both Lt-4A and LL-32 may have to
be replaced. Excessive wear may require
cartridge replacement LL-1A.
Not enough flow from faucet
In-line screen clogged
Disassemble supply to faucet. Remove
in-line screen (LL-101) in inlet to faucet.
Rinse screen with water or de-liming agent.
Reassemble faucet supply.
Water leaks from under handle
Stem washers worn
Remove cartridge and replace washers
using KIT-LL.
Faucet leaks under counter
4-10C connections not seated properly
Check connections on 4-10C.
Faucet bleeding between hot and cold,
not holding consistent temperature (S-73
or S-74)
Integral checks in mechanical mixing valve
(4-10C) not operating properly
Clean or replace checks (MV-107)
Handle is loose
Set screw has loosened
Tighten set screw
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