Apollo Valves 36H20801 Manuel de démarrage rapide - Page 2

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Apollo Valves 36H20801 Manuel de démarrage rapide
PROBLEM
1. Inlet pressure equalizes outlet
pressure at no flow conditions.
2. Outlet pressure rises above inlet
pressure.
3. Excessive noise within the pipe-
line at the PRH.
Size
(NPT)
A
B
1/2"
4-1/8
2-1/4
3/4"
4-1/8
2-1/4
1"
4-1/8
2-5/16
7-1/2
1-1/4"
6-3/4
3-3/16
1-1/2"
6-3/4
3-3/16
2"
8-1/8
3-1/2
12-1/2
2-1/2"
8-1/8
3-1/2
12-1/2
3"
10-3/8
3-15/16
15-1/8
Flanged
2"
10-3/8
3-1/2
12-1/2
2-1/2"
10-3/8
3-1/2
12-1/2
3"
12-1/2
3-15/16
15-1/8
Flow curves are based on static conditions of: Inlet pressure = 100 psig.
Outlet pressure = 50 psig
0
5
10
15
20
½"
¾
1"
1-1/4"
"
25
0
50
100
150
WARNING! This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
(California law requires that this warning be given to the consumers in the State of California.)
For more information visit www.apollovalves.com.
THIS PRODUCT MEETS THE REQUIREMENTS OF THE EPA SAFE DRINKING WATER ACT.
TROUBLE-SHOOTING
Leakage within the valve may be due
to the following:
(a) Seat disc not sealing tight
against seat
(b) Seat O-ring may be cut or damaged
(c) Damaged or cut diaphragm
(d) By-pass leaking
By-pass assembly not opening or
clogged
Thermal expansion downstream
High water velocity at the pipeline
can sometimes cause a whistling
noise or hum.
DIMENSIONS (in.) & WEIGHTS (lbs.)
C
D
E
F
7
1-7/8
8-3/8
4
7
2-7/16
9
4
4
10-1/4
4-11/16
10
3-3/8
12-1/2
6-1/2
10
3-7/8
13-1/8
6-1/2
4-5/8
16
7-5/8
5-15/16
16-11/16
7-5/8
6-15/16
20-1/2
9-3/4
6-1/4
20
7-5/8
7-1/8
21-11/16
7-5/8
8-1/8
24-1/2
9-3/4
FLOW CURVES
1½"
2"
200
250
300
FLOWRATE (GPM)
POSSIBLE CAUSE
WGT.
WGT.
W/STRAINER
W/OUT STRAINER
7
6
7
6
12
8
29
24
29
23
47
38
49
37
87
70
79
49
105
55
136
92
EXAMPLE:
pressure of 100 psig and outlet set pressure of 50 psig
(standard), a PRH-3/4" unit will deliver 23 gpm
of water with a 10 psi fall-off (40 psi reduced flow
pressure). If outlet set pressure at static condition is
less than 50 psig, deduct 20% from capacity shown.
NOTES: 1) Repair kits contact factory
2½"
3"
350
400
450
SOLUTION
-Inspect and replace if defective.
-Inspect and replace if defective.
-Replace
-Inspect by-pass washer and rubber
ball.Rubber ball should move freely inside
the housing. If defective replace the
by-pass assembly.
-Disassemble the unit, clean and replace
the by-pass assembly, if defective.
-Rubber ball should move freely inside the
housing.
-Slight adjustment on the PRH may
eliminate the noise. If not, the line or the
PRH may be too small for the application.
F
USA
D
A
E (REF.)
At static (no flow) conditions, inlet
CONBRACO INDUSTRIES INC.
1418 S.PEARL ST.
PAGELAND, SC 29728
TELEPHONE (704)841-6000
www.apollovalves.com
(C)
B