Murphy Dump Valves DV Series Product Manual

FRANK W.
Dump Valves

Description

The DV850, DV875, and DV2100 are pneumati-
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.
Murphy offers stainless steel versions of the DV850,
DV875, and DV2100 Series.
NOTE: All stainless steel versions carry Canadian
Registration Number OC1476.2.

Operating Pressures

Operating vs. Vessel Pressure
70
65
60
55
50
45
40
35
30
25
0
500 1000 1500
Vessel Pressure (PSIG)

Application

Primarily designed for compressor scrubbers,
these valves can be used to dump any liquids
compatible with the valve's specifications.
®
MFR.
DV875
Patent Pending

Specifications

Operating Temperature:
-30 to +300°F (-34.4 to +149°C)
Valve Operating Pressure:
30–70 psi (207–483 kPa) [2.07–4.83 bar]
Maximum Process Pressure:
2000 psi (13.7 MPa) [137 bar]
Stem Seal: Carbon/Graphite Filled PTFE
Upper Case Coating: Electroless Nickel Plated
on 12L14 Carbon Steel.
Body Material: DV850, DV875, and DV2100:
Electroless Nickel Plated 12L14 Carbon Steel
DV850SS, DV875SS, and DV2100SS: ANSI
316 (UNS31600) Stainless Steel
Wetted Parts: Body: 12L14 Carbon Steel.
Optional ANSI 316 stainless steel.
Shaft/Stem; ANSI 316 stainless steel.
Guidebushing: ANSI 316 stainless steel.
Body Seat: ANSI 316 stainless steel.
Piston Seal: ANSI 316 stainless steel.
DV850/875
2000
DV Series
For Separators/Scrubbers to 2000 psi (13.7 MPa)
[137 bar] Vessel Pressure
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
Built-In Valve Open/Closed Pop-Up
Indicator Button
Compatible with Murphy Level Controls
A
B
C
D
E
F
G
NOTE: Dimensions are in inches and (millimeters)
Vent
F
Drain
Connection
Positive-Seal
Detail
Body
Seat
DV-98110B
Revised 11-99
Catalog Section 15
(00-02-0325)
MURPHY MATIC

Dimensions

DV850/SS DV875/SS DV2100/SS
6-3/4 (171) 6-3/4 (171) 6-3/4 (171)
7-9/64 (181) 7-9/64 (181) 7-59/64 (201)
3-9/32 (83) 3-9/32 (83) 3-63/64 (101)
2-19/64 (58) 2-19/64 (58) 2-5/32 (55)
1 NPT 1 NPT 2 NPT
1/2 NPT 3/4 NPT 1 NPT
1/8 NPT 1/8 NPT 1/8 NPT
A
G
Pressure Inlet Port
Valve Open/Closed
Indicator Button
E
Body Seat
Piston Seal
Piston
Seal
®
B
C
D