Murphy Dump Valves Dv Series User Manual

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 Pressureschart.  
-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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