Leonard TMS-25 Guide

BULLETIN G-2B-TMS
August, 2018
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
Web Site: http://www.leonardvalve.com
INSTALLATIONADJUSTMENT SERVICE
THERMOSTATIC STEAM AND WATER MIXING VALVE
TYPE TMS-25, 50, 80, 125, 150
IMPORTANT! Provide valve serial number (stamped on cover of valve) when ordering parts!!
INSTALLATION COLD INLET
STEAM INLET
H
C
THERMOSTATIC
LEONARD
OUTLET
1. Valve should be installed at a location where it can easily be
cleaned, adjusted or repaired.
2. The inlets are clearly marked on the valve body casting.
Connect the Steam into the inlet marked “H” cold water into
the inlet marked “C”.
3. Use pipe cement sparingly. Supply pipes should be flushed
before the valve is connected. Flush outlet pipe and valve as
soon as it is connected.
4. Union Angle stops furnished must be installed on both supply
lines as shown above.
5. A shutoff valve must be installed on the outlet pipe. Type
TMS valves do not have a built in shutoff.
6. IMPORTANT! Not for use with steam and water pressures
above 80 PSI (5.5 bar). The prevailing steam (or hot water)
pressure must be slightly lower than the cold water pressure.
7. Not for use with unequal pressures. Install pressure reducing
valves where unequal pressure conditions exist.
8. Maximum recommended operating temperature of 200°F
(93°C). Note This maximum temperature is for valve only,
see hose specification for rating temperature.
9. Provide a steam trap prior to the blender to eliminate water
hammer.
10. When used for high temperature wash down (140°F to
180°C) operators should wear protective gloves, boots and
clothing, and they should be given safety instructions in the
proper use of high temperature hot water.
CAUTION: These valves may pass live steam under certain circumstances. A limit stop is
simply a mechanical setting to prevent excessive handle rotation. When turned to full HOT
valve may deliver water in excess of safe temperatures, therefore the limit stop MUST BE
RESET BYTHE INSTALLER. Protective clothing must be worn at all times.
!WARNING: This product can expose you to
chemicals including lead, which is known to the State
of California to cause cancer. For more information, go
to www.P65Warnings.Ca.gov

ADJUSTMENTAND SERVICE
Leonard Type TMS Thermostatic Steam and Water Mixing
Valves are simple in design and may be easily cleaned,
adjusted and repaired. If the installation is accessible, servicing
may be completed without disconnecting the valve.
NOTE: Thermostatic Steam and Water Mixing Valves are
REGULATING mechanisms, which must be regularly
maintained to provide best performance. Frequency of cleaning
depends on quality of local water conditions and usage. (See
Maintenance Guide and Record MGR-1000).
TO RESETADJUSTABLE HIGH TEMPERATURE LIMIT STOP:
1. Loosen LTR set screw.
2. Remove SNAP CAP, SCREW & WASHER. Remove
POINTER.
3. Temporarily place POINTER on the spline rod. turn
RIGHT for warmer temperature, turn LEFT for cooler
temperature. When valve is delivering warmest
temperature desired, remove the pointer.
4. Replace POINTER on the spline rod so that its RIGHT
edge is resting against the STOP SCREW located on the
RIGHT SIDE OF THE COVER.
5. The new maximum temperature has now been set. Test
this temperature by holding a thermometer under the
flow of water to be certain it is as desired.
TROUBLESHOOTING INSTRUCTIONS
SEE PAGE 4 FOR COMPLETE PARTS BREAKDOWN, PARTS KITS
REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE
CLEANED AND MAINTAINED ON A REGULAR BASIS. (SEE
MAINTENANCE GUIDE AND RECORD, MGR-1000).
2
POINTER
SET SCREW
LTR
STOP
SCREW
SNAP
CAP
THERMOSTATIC
LEONARD
C
H
TMS-25 TMS-50/80 TMS-125/150
PACKING &
GASKETS
PORT SLEEVE
ASSEMBLY
THERMOSTAT
GROUP
CHECKSTOPS
1. Leak at pointer rod.
2. Leak between valve cover and base.
3. Valve delivers either all hot or all cold water, or
will not mix consistently.
4. After cleaning or replacing port sleeve
assembly, valve will not hold temperature.
5. Steam bypass into cold supply.
6. Cold water bypass into steam supply.
1/50ST
TGM-1/30ST or
R/30ST
TGM-2/50 or
R/30ST
KIT 2/50 ST
1/50ST
TGM-1/50ST or
R/50ST
TGM-2/50 or
R/50ST
KIT 2/50 ST
1/125ST
TGM-1/125ST or
R/125ST
TGM-2/125 or
R/125ST
KIT 2/50 ST
!! WARNING !!
WARNING! This Thermostatic Mixing Valve has an
adjustable high temperature limit stop, which must be
checked. If temperature is too high, the installer MUST
RESET this stop immediately. Always check the temperature
of the mixed water when the lever handle is turned to full
HOT. Excessively hot water is DANGEROUS AND MAY
CAUSE SCALDING!
THESE VALVES MAY PASS LIVE STEAM UNDER
CERTAIN CIRCUMSTANCES.
The high temperature limit stop is factory set at
approximately 140°F (60°C) with incoming steam and cold
water supply pressures of 50PSI (3.4BAR). If the incoming
steam or water supplies are different from those noted above,
the valve when turned to full hot may deliver water in excess
of 140°F and the high temperature limit stop MUST BE
RESET BY THE INSTALLER.
IMPORTANT! Not for use with steam and water
pressures above 80 PSI (5.5 bar). The prevailing steam (or
hot water) pressure must be slightly lower than the cold
water pressure.

INSTRUCTIONS FOR
DISMANTLING VALVE
1. Shut off Steam and Cold supplies to valve.
2. Loosen LTR set screw.
3. Remove SNAP CAP, SCREW and WASHER, POINTER and FRICTION
SPRING. (FIGURE #1).
WHEN RE-ASSEMBLING VALVE, insert new Flange Packing in base; replace
COVER, tightening COVER SCREWS in rotation; put FRICTION SPRING in
place; then replace POINTER and POINTER ROD SCREW, WASHER and CAP.
After installing new parts, it will be necessary to reset Pointer to obtain correct
temperature range from Cold to Hot. See page 2 instructions "TO RESET
ADJUSTABLE HIGH TEMPERATURE LIMIT STOP."
TO CLEAN PORT SLEEVE ASSEMBLY
Failure to properly blend the water may be caused by a sticking condition in the
PORT SLEEVE ASSEMBLY. The THIMBLE should slide freely on the PORT
SLEEVE.
1. If a deposit of lime or sediment prevents free movement, use a nail set or other
tapered tool to unscrew the CHECK NUT as far as it will go, then screw the PORT
SLEEVE NUT into the base. This will release the PORT SLEEVE and THIMBLE
so they can be lifted out, (Figure #2).
2. Clean with a NON-CORROSIVE CLEANING AGENT AND SOFT CLOTH - DO
NOT USE ABRASIVES - then wash parts thoroughly, wipe with a dry cloth and
re-assemble. The PORT SLEEVE should be assembled with the SHOULDER to
the LEFT. Tighten PORT SLEEVE NUT against end of PORT SLEEVE but be
careful not to cramp sleeve in place. Tighten CHECK NUT.
3. When replacing front be sure DRIVING BALL is inserted in Ball Socket as shown
in Figure #1.
TO REPLACE POINTER ROD WITH GEAR
1. Loosen LTR set screw. Remove POINTER ROD SNAP CAP, SCREW,
WASHER, POINTER, and FRICTION SPRING. (FIGURE #1)
2. Remove COVER with parts attached, from the front of valve.
3. Remove COIL SLEEVE STUD and take off THERMOSTAT GROUP.
4. Replace POINTER ROD with GEAR and re-assemble.
TO REPLACE (OR CLEAN) THERMOSTAT
GROUP
Follow instruction for replacing POINTER ROD with GEAR above. If a
deposit has collected on the Thermostatic Coil, clean it off with a brush in a
non-corrosive grit-free cleaning solution.
SLEEVE
PORT
PORT
SLEEVE
NUT
CHECK
NUT
POINTER
ROD WITH
2.
GEAR
THIMBLE
PACKING
FLANGE
STUD
COIL SLEEVE
POINTER
1.
BALL
DRIVING BALL
SOCKET
SET SCREW
LTR
REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND
MAINTAINED ON A REGULAR BASIS. (SEE MAINTENANCE GUIDE AND
RECORD, MGR-1000).
3

TMS-25/50/80 VALVE PARTS
CHECKSTOPPARTS REPAIR KITS
& PACKING (2) CAP PACKING (2)
BONNET PKG. (2)
SCREEN (2)
03-ST
LOWER STEM 011 014
STUD
TM-8
COIL SLEEVE
LOWER STEM
03-ST
5236 538
(2 REQD.)
013
POINTER ROD
KIT 2/50ST CHECKSTOP KITS
5236
NUT ASSY. O'RING
05
THERMOSTAT
TGM-2/50
PKG.
FLANGE
GROUP
TM-28A
POINTER ROD
011
PORT SLEEVE
TM-3/50
5236
PKG.
538
FLANGE
014
05
KIT R/30ST FOR TMS-25 REBUILDING KIT
KIT R/50ST FOR TMS-50 OR TMS-80 REBUILDING KIT
KIT 1/50ST PACKING & GASKET KITS
TGM-1/30-ST FOR TMS-25
ASSY
PORT SLEEVE
TGM-1/50-ST FOR TMS-50/80
013
SPRING (2)
O'RING (4)
& PACKING (2)
STEM O'RING (2)
SPRING (2) CAP PACKING (2)
BONNET PKG. (2)
SCREEN (2)
LOCK TYPE POINTER
TMS valves are furnished
with lockable pointers.
POINTER SET SCREW
TM-36
REMEMBER! THIS IS A CONTROL DEVICE WHICH
MUST BE CLEANED AND MAINTAINED ON A
REGULAR BASIS (SEE MAINTENANCE GUIDE AND
RECORD (MGR-1000).
NOTE: AFTER INSTALLING NEW PARTS IT WILL BE
NECESSARY TO RESET THE ADJUSTABLE HIGH
TEMPERATURE LIMIT STOP (SEE PAGE 2).
4
CHROME PLATE FINISH
ADD SUFFIX "CP" FOR
TM-25CM
POINTER
* *
TM-29/29A
W/WASHER
POINTER SCREW
57-L
SNAP CAP
* *
(2 REQD.)
TGM-1/30ST FOR TMS-25
ASSY
PORT SLEEVE
538
FLANGE PACKING
30
SPRING
FRICTION
PLATE
DIAL
COVER
SCREWS
TM-16
ASSY
PORT SLEEVE NUT
TM-3/50
POINTER ROD
TM-28A
TM-16A/50
PLATE
DIAL
LEONARD
THERMOSTATIC
C
H
TM-8
TGM-2/50
THERMOSTAT GROUP
STUD
COIL SLEEVE
TM-15B/50 RF
TM-25D
COVER
STOP
* *
* *
* *
5236
O'RING
TGM-1/50ST FOR TMS-50/80
SPRING
011
BODY
03 ST
CAP PACKING
014
STRAINER CAP
06
SCREEN
**
PACKING
05
O'RING
5236
013
MU-4A
UPPER STEM **
BONNET
02-RF **
**SUFFIX CP FOR CHROME PLATE
LOWER STEM & PACKING
04/50
09/50
SWIVEL NUT **
SWIVEL **

TMS-125/150 VALVE PARTS
CHECKSTOPPARTS REPAIR KITS
LOCK TYPE POINTER
TMS valves are furnished
with lockable pointers.
POINTER SET SCREW
TM-36
REMEMBER! THIS IS A CONTROL DEVICE WHICH
MUST BE CLEANED AND MAINTAINED ON A
REGULAR BASIS (SEE MAINTENANCE GUIDE AND
RECORD (MGR-1000).
NOTE: AFTER INSTALLING NEW PARTS IT WILL BE
NECESSARY TO RESET THE ADJUSTABLE HIGH
TEMPERATURE LIMIT STOP (SEE PAGE 2).
5
CHROME PLATE FINISH
ADD SUFFIX "CP" FOR
TM-25CM
POINTER
* *
TM-29/29A
W/WASHER
POINTER SCREW
57-L
SNAP CAP
* *
(2 REQD.)
TGM-1/125ST
PORT SLEEVE ASSY
925
FLANGE PACKING
30
SPRING
FRICTION
PLATE
DIAL
COVER
SCREWS
TM-16
ASSY
PORT SLEEVE NUT
TM-3/125
POINTER ROD
TM-28A
TM-16A/125
PLATE
DIAL
LEONARD
THERMOSTATIC
C
H
TM-8
TGM-2/125
THERMOSTAT GROUP
STUD
COIL SLEEVE
TM-15B/125 RF
TM-25D
COVER
STOP
* *
* *
* *
5236
O'RING
KIT R/125ST REBUILDING KIT
03-ST
LOWER STEM
& PACKING (2) CAP PACKING (2)
011
SPRING (2) 014
STUD
TM-8
COIL SLEEVE
& PACKING (2)
LOWER STEM
03-ST
5236 925
(2 REQD.)
SCREEN (2)
013
POINTER ROD
KIT 2/50ST CHECKSTOP KITS
5236
STEM O'RING (2)
NUT ASSY. O'RING
BONNET PKG. (2)
05
THERMOSTAT
TGM-2/125
PKG.
FLANGE
GROUP
TM-28A
POINTER ROD
013
011
PORT SLEEVE
O'RING (4)
TM-3/125
SPRING (2)
5236
PKG.
925
FLANGE
CAP PACKING (2)
014
BONNET PKG. (2)
05
SCREEN (2)
KIT 1/125ST PACKING & GASKET KITS
TGM-1/125ST
ASSY
PORT SLEEVE
SPRING
011
BODY
03-ST
CAP PACKING
014
STRAINER CAP
06
SCREEN
**
PACKING
05
O'RING
5236
013
MU-4A
UPPER STEM **
BONNET
02-RF **
**SUFFIX CP FOR CHROME PLATE
LOWER STEM & PACKING
04/125
09/125
SWIVEL NUT **
SWIVEL **

FLOW CAPACITIES
TMS-25 (¾” IN, ¾” OUT) TMS-50 (¾” IN, 1” OUT)
TMS-80 (1” IN, 1 ¼” OUT)
l/min
GPM
l/min
GPM
GPM
l/min
GPM
l/min
FLOW RATE (GPM)
3.8
4.5
65
55
3.1
45
76.0102.0113.5 87.0 68.0
127.0 110.0
33.5 29.0 85.094.5 76.0 22.525.0 20.0
30.0 27.0
104.0
27.5 91.0 24.0
20.023.0 18.0
18.0
68.076.0
20.0 60.5 16.0
62.5 57.0
66.0 60.5
17.5 16.0
16.5 15.0
53.0
14.0 49.5 13.0
BAR
2.4
35
PSI 27°C16°C11°C 22°C 33°C
87.0 74.0
23.0 19.5 55.062.5 49.5 14.516.5 13.0
20°F 30°F 50°F40°F 60°F 38°C 44°C
43.5 40.0
11.5 10.5
70°F 80°F
FLOW RATE (GPM)
3.8
4.5
65
55
3.1
45
84.0113.5126.0 99.0 76.0
142.0 126.5
37.5 33.5 99.0113.5 84.0 26.030.0 22.5
33.0 30.0
113.5
30.0 99.0 26.0
22.526.0 20.0
20.0
76.087.5
23.0 65.0 17.0
69.0 63.0
76.0 67.0
20.0 17.5
18.0 16.5
57.0
15.0 53.5 14.0
BAR
2.4
35
PSI 27°C16°C11°C 22°C 33°C
94.5 83.5
25.0 22.0 60.069.0 53.5 15.518.0 14.0
20°F 30°F 50°F40°F 60°F 38°C 44°C
48.0 45.5
12.5 12.0
70°F 80°F
l/min
GPM
l/min
GPM
GPM
l/min
GPM
l/min
TEMPERATURE RISE
FLOW RATE (GPM)
3.8
4.5
65
55
3.1
45
89.0120.0134.5 104.0 78.5
151.5 134.5
40.0 35.5 104.0121.0 89.0 27.532.0 23.5
35.5 32.0
123.0
32.5 110.0 29.0
23.527.5 21.0
21.0
78.594.5
25.0 68.0 18.0
70.0 65.0
78.5 68.0
21.0 18.0
18.5 17.0
62.5
16.5 57.0 15.0
BAR
2.4
35
PSI 27°C16°C11°C 22°C 33°C
104.0 89.0
27.5 23.5 65.072.0 55.0 17.019.0 14.5
20°F 30°F 50°F40°F 60°F 38°C 44°C
49.5 48.0
13.0 12.5
70°F 80°F
l/min
GPM
l/min
GPM
GPM
l/min
GPM
l/min
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
Web Site: http://www.leonardvalve.com
TMS-25
TMS-50
TMS-80
FLOW RATE AT 45 PSI
40.0
(151)
35.0
(133)
30.0
(114)
25.0
(95.6)
20.0
(75.7)
15.0
(56.8)
10.0
(37.9)
5.0
(19.0)
0.0 20°F
(11°C) 40°F
(22°C) 60°F
(33°C) 80°F
(44°C)
GPM (l/min.)
TEMPERATURE RISE
TEMPERATURE RISE
6

© 2018 Leonard Valve Company
Printed in USA
FLOW CAPACITIES
TMS-125 (1 ¼” IN, 1 ¼” OUT) TMS-150 (1 ¼” IN, 1 ½“ OUT)
TEMPERATURE RISE
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
Web Site: http://www.leonardvalve.com
LIMITED WARRANTY
Leonard Valve Company warrants the original purchaser that products manufactured by them (not by others) will be free from defects in materials
and workmanship under normal conditions of use, when properly installed and maintained in accordance with Leonard Valve Company's
instructions, for a period of one year from date of shipment. During this period the Leonard Valve Company will at its option repair or replace any
product, or part thereof, which shall be returned, freight prepaid, to the Leonard factory and determined by Leonard to be defective in materials or
workmanship. There are no warranties, express or implied, which extend beyond the description contained herein. There are no implied warranties of
merchantability or of fitness for a particular purpose. In no event will Leonard be liable for labor or incidental or consequential damages. Any
alteration or improper installation or use of the product will void this limited warranty.
TEMPERATURE RISE
(265)
(75.5)
(38.0)
10.0
0.0
(227)
(189)
(151)
(114)
20.0
30.0
40.0
50.0
60.0
(303)
70.0
80.0
(33°C)
60°F
(22°C)
(11°C)
20°F 40°F (44°C) 80°F
FLOW RATE AT 45 PSI
TEMPERATURE RISE
GPM (l/min.)
TMS-125
TMS-150
22°C 33°C
189.0 157.0
50.0 41.5 119.0134.5 106.0 31.535.5 28.0
20°F 30°F 50°F40°F 60°F 38°C 44°C
GPM
l/min
92.5 83.0
24.5 22.0
70°F 80°F
FLOW RATE (GPM)
3.8
4.5
65
55
3.1
45
151.5215.5284.0 174.0 130.5
320.0 250.0
84.5 66.0 172.0204.5 147.5 45.554.0 39.0
75.0 57.0
227.0
60.0 181.5 48.0
40.046.0 34.5
35.5
134.5151.5
40.0 117.5 31.0
l/min
111.5 100.0
GPM
l/min
130.5 110.0
34.5 29.0
GPM
GPM
l/min
29.5 26.5
102.0
27.0 89.0 23.5
BAR
2.4
35
PSI 27°C16°C11°C
22°C 33°C
175.0 147.0
46.0 39.0 113.5126.5 103.0 30.033.5 27.0
20°F 30°F 50°F40°F 60°F 38°C 44°C
GPM
l/min
91.0 81.0
24.0 21.5
70°F 80°F
FLOW RATE (GPM)
3.8
4.5
65
55
3.1
45
142.0197.0254.0 162.5 126.5
284.0 227.0
75.0 60.0 162.5189.5 142.0 43.050.0 37.5
67.0 52.0
206.5
54.5 168.5 44.5
37.543.0 33.5
33.5
126.5142.0
37.5 113.5 30.0
l/min
108.0 98.5
GPM
l/min
126.5 108.0
33.5 28.5
GPM
GPM
l/min
28.5 26.0
100.5
26.5 87.0 23.0
BAR
2.4
35
PSI 27°C16°C11°C
7