62-3028—4
2
D05 PRESSURE REGULATING VALVES
Table 1. Water Capacities.
INSTALLATION
When Installing this Product...
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Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
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Check the ratings given in these instructions and
on the product to make sure the product is suitable
for your application.
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Installer must be a trained, experienced service
technician.
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After installation is complete, check out the product
operation as provided in these instructions.
Procedure
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Flush the system clear of sediment or debris.
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Close the supply valve and downstream isolating
valve (if used).
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Install the D05 with the arrow on the body pointing
in the direction of water flow. (The D05 can be
mounted in any position.)
The D05 can be installed directly onto the pipe by using
the female NPT threads on each end. If space limitations
restrict turning the D05, install single- or double-unions.
NOTE:
Heat from soldering can damage internal parts
of the D05. Always remove the tailpiece(s) from
the D05 during soldering, or disassemble the
D05 prior to heating the casting.
a
Velocity in feet per second is based on schedule 40 pipe size. recommended pressure falloff for general use is
approximately 104 kPa (15 psi). Recommended velocities for the flow of water: Residential and general use, 5 to 10
feet per second; industrial use, 7 to 15 feet per second; boiler feed, 7 to 15 feet per second.
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Open the supply valve.
Changing the Outlet Pressure (See Fig. 1)
The D05 is factory set to 60 psi. To change the outlet
pressure, turn the adjusting bolt counterclockwise
to reduce pressure or clockwise to increase
pressure.
To adjust the outlet pressure to a desired setting:
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Close the supply shutoff valve and open a down-
stream faucet to relieve static pressure in the line.
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Install a pressure gauge to the gauge tap on D05G
models, or temporarily with a downstream hose bib
on other D05 models.
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Loosen the locknut by turning counterclockwise
two turns.
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Turn the adjusting bolt counterclockwise
several turns to make sure the setting is below the
desired setting.
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Close all downstream valves and/or faucets and
slowly open the supply valve until fully open.
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Turn the adjusting bolt clockwise to gradually
increase the pressure until the gauge indicates the
desired outlet pressure (under no flow condition).
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Reopen a downstream valve. During flow, there
will normally be a pressure falloff of 3 to 15 psi
depending upon the amount of water flow.
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Tighten the locknut by turning clockwise until
tight. Do not overtighten.
Pressure Differential Between Inlet and Outlet
25 psi
50 psi
75 psi
100 psi or more
Pressure
Regulator
Valve
Size
Reduced
Pressure
Falloff
(psi)
Flow
Capacity
(U.S. gpm)
Velocity
(ft/sec)
a
Flow
Capacity
(U.S. gpm)
Velocity
(ft/sec)
a
Flow
Capacity
(U.S. gpm)
Velocity
(ft/sec)
a
Flow
Capacity
(U.S. gpm)
Velocity
(ft/sec)
a
1/2 inch
6
7.0
7.3
8.0
8.3
9.0
9.4
10.0
10.4
10
10.0
10.4
11.0
11.5
12.0
12.5
13.0
13.5
15
13.0
13.5
15.0
15.6
16.0
16.7
17.0
17.7
20
15.5
16.0
18.0
19.5
19.0
21.0
20.0
22.0
3/4 inch
6
9.0
5.4
10.0
6.0
11.0
6.5
12.0
7.1
10
15.0
8.9
16.0
9.5
17.0
10.0
18.0
10.7
15
20.0
11.9
22.0
13.7
23.0
13.7
24.0
14.3
20
23.0
13.9
26.0
17.6
27.0
16.7
28.0
17.3
1 inch
6
11.5
4.2
13.0
4.7
14.5
5.3
16.0
5.8
10
20.0
7.2
21.5
7.8
23.0
8.3
24.5
8.9
15
28.0
10.7
30.0
10.9
33.0
12.0
35.0
12.7
20
32.0
14.0
37.0
13.5
40.0
15.5
41.0
15.0
1-1/4 inch
6
13.5
2.9
16.0
3.4
20.0
4.3
22.0
4.7
10
22.0
4.7
29.0
6.2
34.0
7.3
38.0
8.1
15
37.0
7.9
56.0
12.0
62.5
13.4
73.0
15.6
20
55.0
11.8
78.0
16.7
87.0
18.6
101.0
21.6