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