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Emerson Tartarini PRX Series - Type PRX;120 Connections; Parts Ordering; Parts List; PRX Series Pilots

Emerson Tartarini PRX Series
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PRX Series
8
9. Lightly lubricate the outer and inner rims of the diaphragm
(key 18). Place the diaphragm assembly on top of the
regulator seat (key 5). The screw unit (key 17) will slide
into regulator seat (key 5). Use care to avoid damage to
parts when reassembling.
10. Set the spring (key 1) on top of the nut (key 21).
11. Align the regulator cover (key 19) over the body (key 7)
with the sense port (V) opposite the pilot supply port (R).
12. Place the filter pad (key 12) and filter nets (key 8),
one on each side of the filter pad, on the filter cover
(key 11).
13. Pick up the body (key 7) and place it on the filter cover
(key 11) with the inlet port (M) aligned vertically with the
sense port (V).
14. Insert cap screws (key 2). Place washers (key 9) and nuts
(key 10) on the end of the cap screws. Tighten the nuts.
Parts Ordering
Each pilot type in PRX Series is assigned a serial number,
which can be found on the nameplate. Refer to the number
when contacting your local Sales Office for technical
information or when ordering parts. When ordering
parts, also be sure to include the complete 11-character
part number.
Type SA/2 parts can also be ordered. Please provide the
11-character part number and the technical information
stamped on the nameplate when contacting your local
Sales Office.
Parts List
PRX Series Pilots (Figure 2)
Key Description Part Number
Parts Kits
Elastomer Parts Kits
(includes keys: 4, 5, 14, 17, 18, 25 and 28)
Types PRX/120, PRX/120-AP, PRX/125
and PRX/125-AP
Nitrile (NBR) RPRX00X0N12
Fluorocarbon (FKM) RPRX00X0F12
1 Adjusting Screw, Stainless steel M0253340X12
2 Locknut M5036008X12
3 Cap, Steel M0253350X12
*Recommended Spare Part
CODE UNLOADING OR BOOT STYLE TWO-PATH OR LOADING STYLE
A Downstream Sense Line Downstream Sense Line
B Outlet discharge Pilot feed
S Pilot feed Outlet discharge
L To regulator loading pressure chamber To regulator loading pressure chamber
Table 4. Type PRX/120 Connections
Key Description Part Number
4* Upper Cover O-ring
(1 required for Type PRX/120 or
PRX/125, 2 required for
Type PRX/120-AP or PRX/125-AP)
Nitrile (NBR) M6010178X12
Fluorocarbon (FKM) M6020112X12
5* O-ring
Nitrile (NBR) M6010005X12
Fluorocarbon (FKM) M6020001X12
6 Upper Spring Seat, Stainless steel M0253360X12
7 Spring See Table 1
8 Upper Cover, Steel M0298540X12
9 Lower Spring Seat, Stainless steel M0253380X12
10 Machine Screw, Zinc-plated steel (12 required) M5011018X12
11 Washer (14 required) M5055001X12
12 Filter M4500367X12
13 Upper Diaphragm Plate,
Stainless steel (2 required) M0253390X12
14* Diaphragm
Nitrile (NBR) GG05785X012
Fluorocarbon (FKM) GG05785X022
15 Lower Diaphragm Plate, Stainless steel M0253410X12
16 Body, Steel M0253310X12
17* OriceO-ring
Nitrile (NBR) M6010003X12
Fluorocarbon (FKM) M6020126X12
18* Lower Cover O-ring (2 required)
Polyurethane (PU) M6010098X12
Fluorocarbon (FKM) M6020132X12
19 Orice,Steel M0253440X12
20 Nut, Steel M5002004X12
21 Lower Cover, Steel M0298600X12
22* Disk
Polyurethane (PU) ERAA11220A0
Fluorocarbon (FKM) M0279950X12
23 Stem, Steel M0253430X12
24 Nameplate - - - - - - - - - - -
25* Stem O-ring
Nitrile (NBR) M6010223X12
Fluorocarbon (FKM) M6020133X12
26 Upper Diaphragm Nut M5028005X12
27 Damper Adjusting Screw
with Hole, Stainless steel M0253480X12
28* Restrictor/Damper O-ring (2 required) M6020054X12
29 Damper/Restrictor Plate
Types PRX/120 and PRX/120-AP M0254400X12
Types PRX/125 and PRX/125-AP M0257930X12
30 Ring Nut (2 required) M0253490X12
31 Nameplate Screw M5061001X12
32 Restrictor Adjusting Screw with Hole M0253480X12
33 Plug (Types PRX/125 and PRX/125-AP Only) M0257920X12
34 Plug (Types PRX/125 and
PRX/125-AP Only), Brass M4500328X12
35 Spring Barrel Extension for AP, Steel M0274100X12

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