1/4” - 18 NPT
Dirty Media
Source
Clean
Media
Source
SHOWN 90°
OUT OF POSITION
SHOWN 90°
OUT OF
POSITION
11
10
1/4” -
18 NPT
DRAIN
20
50
51
21
26
Figure 75: 39PV07/37 Dirty Service
SHOWN 90°
OUT OF
POSITION
SHOWN 90°
OUT OF POSITION
11
10
17
50
52
18
18
22
1/4” - 18 NPT
Dirty Media
Source
Clean
Media
Source
Figure 76: 39MV07 Dirty Service
1/4” - 18 NPT
Dirty Media
Source
Clean Media
Source
To Main
Valve
Dome
14
18
28
29
31
32
1
2
30
50
21
16
3
22
17
11
10
Figure 77: 39MV22/72 Dirty service
Part
No.
Nomenclature
1
Main Base
2
Adjuster Cap
3
Adjuster Top
10
Insert Top
11
Insert Bottom
12
Main Piston
14
Cap Screw (Top Plate)
16
O-Ring (Adjuster Top)
17
O-Ring (Insert)
18
O-Ring (Top Plate)
20
Spring Seal (Main Piston)
21
Spring Seal (Adjuster Top)
22
Spring Seal (Insert)
26
Pipe Plug (Pilot Valve)
29
Piston Retainer Nut
30
Set Screw (Piston)
31
Vent Seal (Adaptor)
32
Spring Seal (Vent Seal Adaptor)
50
Dirty Insert
51
Omni Plug
52
Breather Filer Vent
B. Dirty Service Option
Severe dirty service, precipitation and viscous fluid
problems can be solved using the dirty service
option offered on the 3900 POSRV. A dirty service
option can be added to the standard pilot valve. The
kit contains a 316 SS chamber, an isolation seal and
an extended pilot piston. The module is positioned
at the top of the pilot valve body and below the pilot
valve bonnet. Crucial valve components such as
the modulator, dome assembly, vent, and inlet seals
never come in contact with the dirty system media.
The process media pressure still controls the set
pressure and blowdown of the POSRV.
XXII. 2900 Series POSRV Options (Cont.)
Consolidated 2900 Series Generation II POSRV Instruction Manual
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