Installation
00-02-0483
page 1 of 4
Installation and Operation Manual for
DVU Series Dump Valves
Models: DVU150, DVU175, DVU2105, DVU2115 and DVU2120
00-02-0483
Revised 10-08
Section 15
Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended
before mounting. It is your responsibility to have a qualified person install this unit and make sure it conforms to local codes.
GENERAL INFORMATION
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
Disconnect all electrical power to the machine.
Make sure the machine cannot operate during installation.
Follow all safety warnings of the machine manufacturer.
Read and follow all installation instructions.
500
500
10
20
30
40
50
60
70
Vessel Pressure (PSIG)
M
in
im
um
C
on
tr
ol
P
re
ss
ur
e
(P
SI
G
)
Co
nt
ro
l P
re
ss
ur
e
(P
SI
G
)
1000
1000
1500
1500
1800
2000
0
0
20
30
40
45
50
60
Vessel Pressure (PSIG)
Maximum Actuation
Pressure
Minimum Actuation Pressure
DVU2105
DVU2115
DVU2120
DVU150/175
Pressure
Inlet Port
1/8 in.-27 NPT
Manual Valve
Operator
A
B
C
D
E
F
Drain
Connection
Plug Seal
Vent
Union
Weep Hole
Valve Open/Closed
Indicator Button
(dimension shown
for reference only)
G
Fig. 2
Dimensions (all models)
Specifications
Operating Temperature:
-30 to 250°F (-34.4 to +121°C)
Valve Operating Pressure:
Refer to chart, Fig 1.
Maximum Process Pressure:
DVU2120:
2000 psi (13.8 MPa) [138 bar].
DVU2115:
1500 psi (10.3 MPa) [103 bar].
DVU2105:
500 psi (3.44 MPa) [34 bar].
DVU150 and DVU175:
1800 psi (12.4 MPa) [124 bar].
Flow Characteristics:
See chart, page 4 (DVU150/175 models only).
Body Material:
Electroless Nickel Plated 12L14 Carbon Steel
Internal Wetted Parts:
Plug Seal:
90 Durometer Urethane.
Other:
303 stainless steel; Electroless Nickel Plated 12L14 Carbon Steel
Shipping Weights:
DVU150 and DVU175:
9 lbs. (4 kg.).
Shipping Weights:
DVU2105, DVU2115 and DVU2120:
14 lbs. (6.4 kg.).
Shipping Dimensions:
7-1/2 x 7-1/2 x 10-3/4 in. (191 x 191 x 274 mm.).
Fig. 1
Control Pressure vs. Working Pressure
Model
Inlet
Outlet
Trim Size
DVU2120
2 NPT
1 NPT
0.436 in. (11 mm)
DVU2115
2 NPT
1 NPT
0.576 in. (15 mm)
DVU2105
2 NPT
1 NPT
0.859 in. (22 mm)
DVU175
1 NPT
3/4 NPT
0.359 in. (9 mm)
DVU150
1 NPT
1/2 NPT
0.359 in. (9 mm)
Description
The DVU Series models are pneumatically controlled dump valves.
The valves open and close automatically by pneumatic control from a
Murphy L1200NDVOR or similar level controller and dump valve opera-
tor. Diaphragm actuated, the DVU series dump valves operate at 30–70 psi
(207–483 kPa) [2.07–4.83 bar] and up to 2000 psi (13.8 MPa) [138 bar]
vessel pressure (depending on the model).
A key benefit of this design is a hex union that provides the ability
to replace the seat without removing the valve from piping.
Model
A
B
C
D
E
F
G
DVU2120
7.50 (191)
8.0 (203)
2.75 (70)
1.0 (25)
2-11.5 NPT 1-11.5 NPT
1.03
DVU2115
7.50 (191)
8.0 (203)
2.75 (70)
1.0 (25)
2-11.5 NPT 1-11.5 NPT
1.03
DVU2105
7.50 (191)
8.0 (203)
2.75 (70)
1.0 (25)
2-11.5 NPT 1-11.5 NPT
1.03
DVU175
7.50 (191) 6.75 (171)
2.06 (52)
1.0 (25)
1-11.5 NPT 3/4”-14 NPT
1.03
DVU150
7.50 (191) 6.75 (171)
2.06 (52)
1.0 (25)
1-11.5 NPT 1/2”-14 NPT
1.03
NOTE: Dimensions are in inches and (millimeters)
