Stainless Series
S6500 (Globe)
S61500 (Angle)
01/05
Standard Materials
Globe
Angle
Body & Cover: Ductile Iron ASTM A536
Coating: NSF Listed Fusion
Bonded Epoxy Lined
Standard Materials
Body & Cover: Ductile Iron ASTM A536
Coating: NSF Listed Fusion
Bonded Epoxy Lined
and Coated
Trim: 316 Stainless Steel
Elastomers: Buna-N (standard)
EPDM (optional)
Viton (optional)
Dimensions
A B C D E F G H I
VALVE
SIZE
6 17-3/4 18-5/8 11-5/8 8-7/8 9-3/8 6-3/4 7-1/4 3/4 3/4 77
8 21-3/8 22-3/8 15 10-11/16 11-3/16 7-1/4 7-3/4 1 3/4 168
10 26 27-3/8 17-7/8 1 1 225
12 30 31-1/2 21 1 1-1/4 376
16 35 36-5/8 25-3/4 1 1-1/4 450
18 48 49-5/8 31 1 1-1/2 850
20 48 49-5/8 31 1 1-1/2 860
24 48 49-3/4 31 1 1-1/2 870
Description
The Watts ACV Models S6500 and S61500 are reduced port, dual chamber basic valves that incorporate a one-piece disc and
diaphragm assembly. This assembly is the only moving part within the valve, allowing it to open or close as commanded by the pilot
control system.
GLOBE
150#
GLOBE
300#
COVER TO
CENTER
ANGLE
150#
ANGLE
300#
ANGLE
150#
ANGLE
300#
PORT
SIZE
PORT
SIZE
SHIPPING
WEIGHTS*
*Estimated in lbs.
When pressure is applied to the upper diaphragm chamber and released from the lower diaphragm chamber, the valve travels to a
closed position. When pressure is applied to the lower diaphragm chamber and released from the upper diaphragm chamber the
valve travels to a full open position. When pressure is balanced between the upper and lower diaphragm chambers, the valve will
hold an intermediate position until commanded to modulate open or closed by the pilot control system.
The Stainless Steel design offers superior corrosion resistance, as well as a lightweight alternative to conventional heavy iron
valves. Stainless Steel construction provides extended, diaphragm life and reduces the frequency and labor costs associated with
traditional maintenance repairs.
Model S6500: Globe Pattern Dual Chamber Basic Valve
Model S61500: Angle Pattern Dual Chamber Basic Valve
Operating Pressure
150 Flanged = 250 psi / 300 Flanged = 400 psi
Operating Temperature
Buna-N: 160°F Maximum
EPDM: 300°F Maximum
Viton: 250°F Maximum
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com
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 valve is the flow rate in US GPM at 60° F that will cause a 1 psi 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 (r P):
Q (Flow) = CV r P rP (Pressure Drop) = (Q/CV)
2
Flow Data
Flow Data - ACV S6500 (Globe) / S61500(Angle)
Valve Size - Inches 6 8 10 12 16 18 20 24
Maximum Continuous
Flow Rate Gpm (Water)
Maximum Intermittent
Flow Rate Gpm (Water)
800 1850 3100 5000 7000 11100 11100 11100
1000 2300 4000 6250 8900 14100 14100 14100
CV Factor GPM (Globe) 224 489 932 1428 2067 2881 2881 2881
CV Factor GPM (Angle) 237 534
Headloss
Angle
8
8
10
12
16
18 / 20 / 24
100
80
60
40
30
Globe
6
6
20
10
8
6
Pressure Drop (p.s.i.)
4
3
2
2 4 6 8 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000
100,000
Valve Cover Chamber Capacity
Valve Cover Cham-
Valve Size (in) 6 8 10 12 16 18 20 24
fl.oz. 22 70
U.S. Gal 1-1/4 2-1/2 4 9-1/2 9-1/2 9-1/2
Flow Rate - Gallons per minute (Water)
Valve Travel
Valve Travel
Valve Size (in) 6 8 10 12 16 18 20 24
(in) 1 1-1/2 2 2-1/2 3 4 4 4
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com