DV-98110B
Revised 11-99
Catalog Section 15
(00-02-0325)
®
FRANK W.
MFR.
Dump Valves
MURPHY
MATIC
DV Series
®
I
For Separators/Scrubbers to 2000 psi (13.7 MPa)
[137 bar] Vessel Pressure
I
I
I
I
Unique Positive-Seal, Field-Replaceable
Piston Seal and Body Seat Assembly
Operates on 30–70 psi (207–483 kPa)
[2.07–4.83 bar] Control Pressure
DV875
Patent Pending
Built-In Valve Open/Closed Pop-Up
Indicator Button
Compatible with Murphy Level Controls
Description
Specifications
Dimensions
DV850/SS DV875/SS
The DV850, DV875, and DV2100 are pneumati- Operating Temperature:
DV2100/SS
6-3/4 (171)
cally controlled dump valves. They open and
close automatically by pneumatic control from a
Murphy L1200NDVOR or similar level con-
troller and dump valve operator. Diaphragm
actuated, the DV series dump valves operate at
30–70 psi (207–483 kPa) [2.07–4.83 bar] and up
to 2000 psi (13.7 MPa) [137 bar] vessel pressure.
See “Operating Pressures”chart.
-30 to +300°F (-34.4 to +149°C)
A
B
6-3/4 (171)
6-3/4 (171)
Valve Operating Pressure:
7-9/64 (181)
7-9/64 (181)
7-59/64 (201)
C
D
E
F
3-9/32 (83)
2-19/64 (58)
1 NPT
3-9/32 (83)
2-19/64 (58)
1 NPT
3-63/64 (101)
2-5/32 (55)
2 NPT
1 NPT
1/8 NPT
30–70 psi (207–483 kPa) [2.07–4.83 bar]
Maximum Process Pressure:
2000 psi (13.7 MPa) [137 bar]
1/2 NPT
3/4 NPT
G
1/8 NPT
1/8 NPT
Stem Seal: Carbon/Graphite Filled PTFE
NOTE: Dimensions are in inches and (millimeters)
Upper Case Coating: Electroless Nickel Plated
on 12L14 Carbon Steel.
Murphy offers stainless steel versions of the DV850,
DV875, and DV2100 Series.
NOTE: All stainless steel versions carry Canadian
Registration Number OC1476.2.
A
Body Material: DV850, DV875, and DV2100:
Electroless Nickel Plated 12L14 Carbon Steel
DV850SS, DV875SS, and DV2100SS: ANSI
316 (UNS31600) Stainless Steel
G Pressure Inlet Port
B
Wetted Parts: Body: 12L14 Carbon Steel.
Optional ANSI 316 stainless steel.
Operating Pressures
Vent
Operating vs. Vessel Pressure
70
Valve Open/Closed
Indicator Button
Shaft/Stem; ANSI 316 stainless steel.
Guidebushing: ANSI 316 stainless steel.
Body Seat: ANSI 316 stainless steel.
Piston Seal: ANSI 316 stainless steel.
F Drain
65
60
55
Connection
50
45
40
35
E
C
Positive-Seal
D
Body Seat
Piston Seal
Detail
DV850/875
30
Body
Seat
25
0
500
1000
1500
2000
Vessel Pressure (PSIG)
Piston
Seal
Application
Primarily designed for compressor scrubbers,
these valves can be used to dump any liquids
compatible with the valve's specifications.
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