Watts M1513-AK User Manual
Mustang series, M518, Globe) m1518
Mustang Series
R
01/05
A
B
C
D
E
F
G
H
I
J
K
L
M
VALVE
SIZE
GLOBE
THRD.
GLOBE
150#
GLOBE
300#
COVER TO
CENTER
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
PORT
SIZE
PORT
SIZE
PORT
SIZE
SHIPPING
WEIGHTS*
2
9-3/8
9-3/8
10
8-9/16
4-3/4
4-3/4
5
3-1/4
3-1/4
3-1/2
3/8
1/2
1/4
45
2-1/2
11
11
11-5/8
10-5/16
5-1/2
5-1/2
5-7/8
4
4
4-5/16
1/2
1/2
1/2
70
3
12-1/2
12
13-1/4
11-3/16
6-1/4
6
6-3/8
4-1/2
4
4-3/8
1/2
1/2
1/2
100
4
15
15-5/8
14-1/4
7-1/2
7-7/8
5
5-5/16
3/4
3/4
1/2
200
6
20
21
18-7/16
10
10-1/2
6
6-1/2
3/4
3/4
3/4
340
8
25-3/8
26-3/8
21-13/16
12-3/4
13-1/4
8
8-1/2
1
1
1
665
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
980
12
34
35-1/2
29-5/16
17
17-3/4
13-3/4
14-1/2
1
1-1/4
1
1720
14
39
40-1/2
32-1/8
19-1/2
20-1/4
14-7/8
15-5/8
1
1-1/2
1
2600
16
41-3/8
43-1/2
35
20-13/16 21-5/8
15-11/16 16-1/2
1
2
1
3300
*Estimated in lbs.
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)
Stem, Nut &
Stainless Steel
Spring:
Description
The Watts ACV Models M518 and M1518 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.
Model M518: Globe Pattern Dual Chamber Basic Valve with Mechanical Check Feature
Model M1518: Angle Pattern Dual Chamber Basic Valve with Mechanical Check Feature
Operating Pressure
Threaded = 400 psi / 150 Flanged = 250 psi / 300 Flanged = 400 psi
Operating Temperature
Buna-N: 160°F Maximum
EPDM: 300°F Maximum
Viton: 250°F Maximum
Dimensions
M518
(Globe)
M1518
(Angle)
L
K
K
M
D
K
A
B
C
H I J
E
F
G
Globe
Angle
m518 link
Description
Operating Pressure
Operating Temperature
Standard Materials
8550 Hansen Road
•
Houston, Texas 77075
•
(Ph) 713.943.0688
•
(Fx) 713.944.9445
•
www.wattsacv.com