Watts S1513-AK User Manual
Stainless series, S518, Globe) s1518
Stainless Series
R
01/05
Standard Materials
A
B
C
D
E
F
G
H
I
J
VALVE
SIZE
GLOBE
150#
GLOBE
300#
COVER TO
CENTER
ANGLE
150#
ANGLE
300#
ANGLE
150#
ANGLE
300#
PORT
SIZE
PORT
SIZE
PORT
SIZE
SHIPPING
WEIGHTS*
4
15
15-5/8
14-1/4
7-1/2
7-7/8
5
5-5/16
1/2
3/4
1/2
87
6
20
21
18-7/16
10
10-1/2
6
6-1/2
1/2
3/4
1/2
178
8
25-3/8
26-3/8
21-13/16
12-3/4
13-1/4
8
8-1/2
1
1
1/2
240
10
29-3/4
31-1/8
23-3/8
14-7/8
15-9/16
8-5/8
9-5/16
1
1-1/4
1/2
397
12
34
35-1/2
29-5/16
17
17-3/4
13-3/4
14-1/2
1
1-1/4
1/2
480
16
41-3/8
43-1/2
35
20-13/16
21-5/8
15-11/16
16-1/2
1
1-1/2
1/2
925
*Estimated in lbs.
Description
The Watts ACV Models S518 and S1518 are full port, dual 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 or close 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.
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.
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 S518:
Globe Pattern
Dual Chamber
Basic Valve with Mechanical Check Feature
Model S1518: Angle Pattern Dual Chamber Basic Valve with Mechanical Check Feature
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
Standard Materials
Body & Cover: 304L Stainless Steel
Flanges:
Class D Zinc Plated Steel
with Stainless Steel Seal Welds
Trim:
Bronze ASTM B62 (standard)
316 Stainless Steel (optional)
Elastomers:
Buna-N (standard)
EPDM (optional)
Viton (optional)
Stem, Nut &
Stainless Steel
Spring:
Dimensions
S518
(Globe)
S1518
(Angle)
I
H
J
C
H
A
B
D
E
F G
Globe
Angle
S518 LINK
Description
Operating Pressure
Operating Temperature
8550 Hansen Road
•
Houston, Texas 77075
•
(Ph) 713.943.0688
•
(Fx) 713.944.9445
•
www.wattsacv.com