Watts S400, S1400 User Manual
Stainless Steel Series Basic Valves
ES-ACV-S400-S1400
Job Name
Job Location
Engineer
Approval
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S400 / S1400
Full Port Stainless Steel
Single Chamber Basic Valve with
Mechanical Check Feature
The Watts ACV Models S400 and S1400 are full port, single
chamber basic valves that incorporate a two-piece telescoping
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 Stainless Steel design offers superior corrosion resistance,
as well as a lightweight alternative to conventional heavy iron
valves. Stainless Steel construction reduces corrosion, reducing
diaphragm wear and the frequency and labor costs associated
with traditional maintenance repairs.
Model S400: Globe Pattern Single Chamber Basic Valve with
Mechanical Check Feature
Model S1400: 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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S400 (Globe) S1400 (Angle)
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A
B
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I
H
H
F G
D
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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 15 381 15
6 150 20 508 21 533 13
8 200 25
10 250 29
12 300 34 864 35
16 400 41
3
⁄8 645 263⁄8 670 16 406 123⁄4 324 131⁄4 337 8 203 81⁄2 216 1 25 1 25 225 102
3
⁄4 756 311⁄8 791 171⁄8 435 147⁄8 378 159⁄16 395 85⁄8 219 95⁄16 237 1 25 11⁄4 32 376 171
3
⁄8 1051 431⁄2 1105 25 635 2013⁄16 529 215⁄8 549 1511⁄16 398 161⁄2 419 1 25 11⁄2 38 850 386
Standard Materials
Body, Cover & 304L Stainless Steel (standard)
5
⁄8 397 105⁄8 270 71⁄2 191 77⁄8 200 5 127 55⁄16 1351⁄2 133⁄4 19 77 35
1
⁄2 902 207⁄8 530 17 432 173⁄4 451 133⁄4 349 141⁄2 368 1 25 11⁄4 32 450 204
3
⁄8 340 10 254 101⁄2 267 6 152 61⁄2 1651⁄2 133⁄4 19 168 76
Operating Pressure
150 Flanged = 250psi (17.2 bar)
Flanges: 316L Stainless Steel (optional)
Trim: 316 Stainless Steel
Elastomers: Buna-N (standard)
EPDM
®
Viton
Stem, Nut & Spring: Stainless Steel
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.
Operating Temperature
Buna-N: 160°F (71°C) Maximum
EPDM: 300°F (140°F) Maximum
®
Viton
: 250°F (121°C) Maximum
Weights*
*Estimated in lbs.
S400 / S1400 — Full Port Stainless Steel Single Chamber Basic Valve
with Mechanical Check Feature
Flow Data - ACV S400 (Globe) / S1400 (Angle)
Valve Size - Inches 4 6 8 10 12 16
Maximum Continuous
Flow Rate Gpm (Water)
Maximum Intermittent
Flow Rate Gpm (Water)
Factor GPM (Globe) 210 460 790 1260 1725 2940
C
V
Factor GPM (Angle) 250 561 990 1590 2500 4200
C
V
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)
800 1850 3100 5000 7000 11100
1000 2300 4000 6250 8900 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
4
6
8
6
8
10
10
12
12
16
16
Flow Rate - Gallons per minute (Water)
Valve Cover Chamber Capacity
Valve Size - Inches 4 6 8 10 12 16
fluid oz. 22 70
U.S. Gal 1-1/4 2-1/2 4 9-1/2
Valve Travel
Valve Size - Inches 4 6 8 10 12 16
Travel - Inches 1 1-1/2 2 2-1/2 3 4
A Watts Water Technologies Company
ES-ACV-S400-S1400 1219 © 2012 Watts
USA: Tel. (713) 943-0688 • (713) 944-9445 • www.watts.com
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