Materials, Pressure –– temperature –– flow rate, Basic construction – Watts LFMMV User Manual
Page 2: Capacity, Dimensions — weights, Hot water inlet mixed outlet cold water inlet
Materials
Body:
Lead Free* cast copper silicon alloy
Disc:
Stainless steel
Thermostat Assembly: Copper
O-rings:
Buna-N; EPDM
Pistons:
Polysulfone (PSU)
Springs:
Stainless Steel
Pressure –– Temperature –– Flow Rate
Minimum Supply Pressure Static: 30psi (207 kPa)
Inlet Temperatures: hot inlet, 120°F – 180°F (49°C – 82°C),
cold inlet, 39°F – 85°F (4°C – 29°C)
Hot Water Inlet to Outlet Differential Temperature: 5°F (3°C)
above
set
point
Temperature Out: Field range: 80°F – 120°F (27°C – 49°C), adjust-
able. Accurate within ±3°F (1.7°C)
Maximum Temperature: 200°F (93°C)
Maximum Pressure: 150psi (1034 kPa)
Minimum Flow: 0.5 gpm (1.9 lpm) @ 0.8psi (0.55 kPa)
†
Maximum Flow: 20 gpm (76 lpm) @ 125psi (862 kPa)
†
Maximum Pressure Differential between Hot & Cold Water Supplies:
25%
Listing: ASSE 1017, ASSE 1069, ASSE 1070 and IAPMO cUPC
†
When tested in accordance with ASSE 1017, ASSE 1069 & ASSE 1070.
Basic Construction
INLET
FILTER
WASHER
Capacity**
kpa psi
345 50
276 40
207 30
138 20
69 10
0
0
2
4
6 8
10
12
14
gpm
7.6 15 23
30 38 46 53
lpm
Pressure Drop
Flow
Flow curves are for reference. Actual flows may vary
depending on system temperatures and/or pressures.
**Flow curve with integral inlet filters and check valves
BUTTON HEAD SCREW
LOCKING
ADJUSTMENT CAP
ADAPTER
O-RING
STEM ASSEMBLY
O-RING
O-RING
PLUNGER
SEAT
SPRING
THERMOSTAT
FUNNEL
UNION NUT
TAILPIECE
CHECK MODULE
BODY
SIZE (DN)
MODEL
DIMENSIONS
WEIGHT
A B C D
in. mm
in. mm in. mm. in. mm in. mm lbs. kg.
1
⁄
2
15
4
7
⁄
8
124 5
7
⁄
16
137 3
3
⁄
16
80
5
⁄
8
16 1.8 0.8
3
⁄
4
20 MMV-UT-M1 4
7
⁄
8
124 5
7
⁄
16
137 3
3
⁄
16
80
5
⁄
8
16 2.4 1.1
1
25
5
5
⁄
16
135 5
5
⁄
8
143 3
3
⁄
8
86
3
⁄
4
20 3.0 1.4
1
⁄
2
15
4
13
⁄
16
123 5
3
⁄
8
137 3
1
⁄
8
80
5
⁄
8
15 1.7 0.8
3
⁄
4
20 MMV-US-M1 5
5
⁄
16
135 5
5
⁄
8
143 3
3
⁄
8
86
7
⁄
8
22 2.3 1.0
1
25
5
13
⁄
16
148 5
7
⁄
8
149 3
5
⁄
8
92 1
1
⁄
8
28 2.9 1.3
1
⁄
2
15
5
1
⁄
4
133 5
9
⁄
16
142 3
5
⁄
16
85
13
⁄
16
21 1.8 0.8
3
⁄
4
20 MMV-PEX-M1 5
1
⁄
2
140 5
11
⁄
16
145 3
7
⁄
16
88
15
⁄
16
24 2.5 1.1
1
25
5
7
⁄
8
149 5
7
⁄
8
150 3
5
⁄
8
93 1
1
⁄
8
29 3.1 1.4
1
⁄
2
15
4
3
⁄
4
121 5
5
⁄
16
136 3
1
⁄
16
79
9
⁄
16
14 1.6 0.7
3
⁄
4
20 MMV-CPVC-M1 5
1
⁄
4
133 5
9
⁄
16
142 3
5
⁄
16
85
13
⁄
16
21 2.2 1.0
1
25
5
11
⁄
16
144 5
13
⁄
16
147 3
9
⁄
16
90 1 26 2.6 1.2
1
⁄
2
15
6
5
⁄
8
168 6
1
⁄
4
159
4 102 1
1
⁄
2
38 2.1 0.9
3
⁄
4
20
6
15
⁄
16
177 6
7
⁄
16
163 4
3
⁄
16
106 1
11
⁄
16
42 2.8 1.3
1
25
7
1
⁄
8
181 6
1
⁄
2
165 4
1
⁄
4
108 1
3
⁄
4
44 3.5 1.6
LFMMV-UT-M1
LFMMV-US-M1
LFMMV-PEX- M1
LFMMV-CPVC-M1
LFMMV-QC-M1
BONNET ASSEMBLY
FILTER WASHER
FIBER WASHER
THREAD
(UT)
SWEAT
(US)
CPVC
PEX
D
D
D
D
QUICK-CONNECT
QC
'
D
'
D
Dimensions — Weights
A
B
C
Hot
Water
Inlet
Mixed Outlet
Cold
Water
Inlet
ES-LFMMV 1324
© 2013 Watts
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