Watts M6400, M61400 User Manual
Mustang Series Basic Valves
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ES-ACV-M6400-M61400
Job Name
Job Location
Engineer
Approval
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M6400 / M61400
Reduced Port Ductile Iron Single
Chamber Basic Valve with
Mechanical Check Feature
The Watts ACV Models M6400 and M61400 are reduced port,
single chamber basic valves that incorporate a two-piece disc
and diaphragm assembly. This assembly is the only moving
part within the valve allowing it to open, close, or modulate as
commanded by the pilot control system. The lower portion of
this two-piece assembly is a mechanical check feature, which
acts independent of diaphragm position or pilot control system,
and provides immediate check action when flow ceases. The
reduced port design offers improved low-flow performance.
Model M6400: Globe Pattern Single Chamber Basic Valve with
Mechanical Check Feature
Model M61400: Angle Pattern Single Chamber Basic Valve with
Mechanical Check Feature
Contractor
Approval
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Contractor’s P.O. No.
Representative
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M6400 (Globe) M61400 (Angle)
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Dimensions
Valve Size Globe 150# Globe 300# Cover To Center Angle 150# Angle 300# Angle 150# Angle 300# Port Size Port Size Shipping
A B C D E F G H I
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.
4 100 13
6 150 17
8 200 21
10 250 26 660 27
12 300 30 762 31
16 400 35 889 36
18 450 48 1219 49
20 500 48 1219 49
24 600 48 1219 49
Standard Materials
Body & Cover: Ductile Iron ASTM A536
Coating: NSF Listed Fusion Bonded Epoxy Lined
7
⁄8 352 141⁄2 368 85⁄8 219 615⁄16 176 71⁄4 184 51⁄2 140 513⁄16 1481⁄2 131⁄2 13 39 18
3
⁄4 451 185⁄8 473 115⁄8 295 87⁄8 225 93⁄8 238 63⁄4 171 71⁄4 1843⁄4 193⁄4 19 89 40
3
⁄8 543 223⁄8 568 15 381 1011⁄16 271 113⁄16 284 71⁄4 184 73⁄4 1973⁄4 193⁄4 19 150 68
3
⁄8 695 177⁄8 454 1 25 1 25 283 128
1
⁄2 800 21 533 1 25 1 25 408 185
5
⁄8 930 253⁄4 654 1 25 11⁄4 32 626 234
5
⁄8 1260 31 787 1 25 2 51 1145 519
5
⁄8 1260 31 787 1 25 2 51 1170 531
3
⁄4 1263 31 787 1 25 2 51 1265 574
Operating Pressure
150 Flanged = 250psi (17.2 bar)
300 Flanged = 400psi (27.6 bar)
and Coated
Trim: 316 Stainless Steel
Elastomers: Buna-N (standard)
EPDM (optional)
Viton
Stem, Nut &
®
(optional)
Operating Temperature
Buna-N: 160°F (71°C) Maximum
EPDM: 300°F (140°C) Maximum
®
Viton
: 250°F (121°C) Maximum
Spring: Stainless Steel
Weights*
*Estimated in lbs.
Viton® is a registered trademark of DuPont Dow Elastomers.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
M6400-M61400— Reduced Port Ductile Iron Single Chamber Basic Valve
with Mechanical Check Feature
Flow Data - ACV M6400 (Globe) / M61400 (Angle)
Valve Size - Inches 4 6 8 10 12 16 18 20 24
Maximum Continuous
Flow Rate Gpm (Water)
Maximum Intermittent
Flow Rate Gpm (Water)
CV Factor GPM (Globe) 133 224 489 932 1428 2067 2881 2881 2881
CV Factor GPM (Angle) 132 237 534
Maximum continuous flow based on velocity of 20 ft. per second.
Maximum intermittent flow based on velocity of 25 ft. per second.
The Cv Factor of a value is the flow rate in US GPM at 60°F that will cause a 1psi drop in pressure.
The factors stated are based upon a fully open valve.
Cv factor can be used in the following equations to determine Flow (Q) and Pressure Drop (∆P):
Q (Flow) = Cv√∆P ∆P (Pressure Drop) = (Q/Cv)
485 800 1850 3100 5000 7000 11100 11100 11100
590 1000 2300 4000 6250 8900 14100 14100 14100
2
Estimated
Headloss
100
80
60
40
30
20
10
8
6
4
Pressure Drop (psi)
3
2
Angle
Globe
2 4 6 8 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000
4
6
4
6
8
8
10
12
16
18/20/24
Flow Rate - Gallons per minute (Water)
Valve Cover Chamber Capacity
Valve Size - Inches 4 6 8 10 12 16 18 20 24
fluid oz. 10 22 70
U.S. Gal 1-1/4 2-1/2 4 9-1/2 9-1/2 9-1/2
Valve Travel
Valve Size - Inches 4 6 8 10 12 16 18 20 24
Travel - Inches 3/4 1 1-1/2 2 2-1/2 3 4 4 4
A Watts Water Technologies Company
ES-ACV-M6400-M61400 1219 © 2012 Watts
USA: Tel. (713) 943-0688 • (713) 944-9445 • www.watts.com
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