Watts S500 / S1500 User Manual
Full port stainless steel dual chamber basic valve, Stainless steel series basic valves, Standard materials
Stainless Steel Series Basic Valves
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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 with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
ES-ACV-S500-S1500
Standard Materials
Body, Cover &
304L Stainless Steel (standard)
Flanges:
316L Stainless Steel (optional)
Trim:
316 Stainless Steel
Elastomers:
Buna-N (standard)
EPDM
Viton
®
Stem, Nut & Spring: Stainless Steel
Operating Pressure
150 Flanged = 250psi (17.2 bar)
Operating Temperature
Buna-N: 160°F (71°C) Maximum
EPDM: 300°F (140°F) Maximum
Viton
®
: 250°F (121°C) Maximum
Dimensions
S500 (Globe)
S1500 (Angle)
S500 / S1500
Full Port Stainless Steel
Dual Chamber Basic Valve
The Watts ACV Models S500 and S1500 are full port, dual
chamber basic valves that incorporate a one-piece disc and dia-
phragm assembly. This assembly is the only moving part within
the valve, allowing it to open or close as commanded by the
pilot control system.
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 reduces corrosion, reducing
diaphragm wear and the frequency and labor costs associated
with traditional maintenance repairs.
Model S500: Globe Pattern Dual Chamber Basic Valve
Model S1500: Angle Pattern Dual Chamber Basic Valve
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*
A
B
C
D
E
F
G
H
I
J
in.
mm
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
5
⁄
8
397
14
1
⁄
4
362
7
1
⁄
2
191
7
7
⁄
8
200
5
127
5
5
⁄
16
135
1
⁄
2
13
3
⁄
4
19
1
⁄
2
13
87
39
6
150
20
508
21
533
18
7
⁄
16
468
10
254
10
1
⁄
2
267
6
152
6
1
⁄
2
165
1
⁄
2
13
3
⁄
4
19
1
⁄
2
13
178
81
8
200
25
3
⁄
8
645
26
3
⁄
8
670
21
13
⁄
16
554
12
3
⁄
4
324
13
1
⁄
4
337
8
203
8
1
⁄
2
216
1
25
1
25
1
⁄
2
13
240
109
10
250
29
3
⁄
4
756
31
1
⁄
8
791
23
3
⁄
8
594
14
7
⁄
8
378
15
9
⁄
16
395
8
5
⁄
8
219
9
5
⁄
16
237
1
25
1
1
⁄
4
32
1
⁄
2
13
397
180
12
300
34
864
35
1
⁄
2
902
29
5
⁄
16
744
17
432
17
3
⁄
4
451
13
3
⁄
4
349
14
1
⁄
2
368
1
25
1
1
⁄
4
32
1
25
480
217
16
400
41
3
⁄
8
1051
43
1
⁄
2
1105
35
889
20
13
⁄
16
529
21
5
⁄
8
549
15
11
⁄
16
398
16
1
⁄
2
419
1
25
1
1
⁄
2
38
1
25
925
420
*Estimated in lbs.
I
H
J
C
H
A
B
D
E
F G