Technical Specifications

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),
adjustable. 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
Viega Pro-Press™ connections are optional factory installed fitting on each
end of the approved/certified assembly.
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
Note: Consult factory for dimensions w/press
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)
CPVCPEX
D
D
D
D
QUICK-CONNECT
QC
'D'
D
Dimensions — Weights
A
B
C
Hot
Water
Inlet
Mixed Outlet
Cold
Water
Inlet
ES-LFMMV 1639 © 2016 Watts
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