Murphy Dump Valves DV Series User Manual download pdf

DV-98110B

Revised 11-99

Catalog Section 15

(00-02-0325)

Dump Valves

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

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.

Application

Primarily designed for compressor scrubbers,

these valves can be used to dump any liquids

compatible with the valve's specifications.

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.

Dimensions

DV875

Patent Pending

500

Vessel Pressure (PSIG)

Minimum Control Pressure (PSIG)

1000 1500 2000

Operating vs. Vessel Pressure

DV850/875

MURPHY MATIC

FRANK W.

MFR.

F Drain

Connection

Piston Seal

Body Seat

Vent

Valve Open/Closed

Indicator Button

Body

Seat

Piston

Seal

Pressure Inlet Port

Positive-Seal

Detail

DV850/SS DV875/SS DV2100/SS

A 6-3/4 (171) 6-3/4 (171) 6-3/4 (171)

B 7-9/64 (181) 7-9/64 (181) 7-59/64 (201)

C 3-9/32 (83) 3-9/32 (83) 3-63/64 (101)

D 2-19/64 (58) 2-19/64 (58) 2-5/32 (55)

E 1 NPT 1 NPT 2 NPT

F 1/2 NPT 3/4 NPT 1 NPT

G 1/8 NPT 1/8 NPT 1/8 NPT

NOTE: Dimensions are in inches and (millimeters)

Operating Pressures

1 2

Summary of Contents

Page 1 - Dump Valves

DV-98110BRevised 11-99Catalog Section 15(00-02-0325)Dump ValvesDV Series For Separators/Scrubbers to 2000 psi (13.7 MPa)[137 bar] Vessel Pressure Uniq

Page 2 - Warranty

Replacement Parts55000219 :Diaphragm Assembly (all models)55000224 :Seat Kit (piston seal & body seat) forDV850, DV875, DV850SS, DV875SS55000225 :

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Murphy Dump Valves DV Series User Manual

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