Emerson Fisher Type 289P Gebruiksaanwijzing - Pagina 5
Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} Emerson Fisher Type 289P. Emerson Fisher Type 289P 12 pagina's. Pilot-operated relief valve
Ook voor Emerson Fisher Type 289P: Installatiehandleiding (4 pagina's), Installatiehandleiding (4 pagina's)
Pagina afdrukken
MaIn VaLVE SPRIng,
SET PRESSuRE
PaRT nuMBER, anD
RangE,
COLOR, PSIg (bar)
PSIg (bar)
10 to 18
For set pressures up to
(0,69 to 1,2)
30 (2,1)
1F826927052
18 to 30
Pink
(1,2 to 2,1)
For set pressures over
30 (2,1)
30 to 100
1D892327022
(2,1 to 6,9)
Red
1. Set pressure is defined as the pressure at which the pilot exhaust starts to bubble (discharge).
2. Crack pressure is the inlet pressure at which the main valve starts audible flow.
3. Inlet pressure build-up over the set pressure to achieve wide-open capacity.
Table 3. NPS 2 Main Valve Capacities and Types 6365 and 6358B Pilot Information
RELIEF SET PRESSuRE
PILOT
RangE, SPRIng PaRT
TyPE
nuMBER, anD COLOR
14-inches w.c. to 2 psig
(35 mbar to 0,14 bar)
6365
14A9672X012
Yellow
2 to 10 psig
(0,14 to 0,69 bar)
6358B
14A9673X012
Black
1. Set pressure is defined as the pressure at which the pilot exhaust starts to bubble (discharge).
2. Crack pressure is the inlet pressure at which the main valve starts audible flow.
3. Inlet pressure build-up over the set pressure to achieve wide-open capacity.
pressures according to the shutdown
procedure. use gauges to monitor inlet,
loading, and outlet pressures while
releasing these pressures.
nPS 1 Type 289P Main Valve
This procedure is to be performed if inspecting
or replacing main valve parts. Key numbers are
referenced in Figure 4.
The main valve body (key 1) may remain
in the line during maintenance. Lightly
lubricate O-rings before assembly.
Disassembly
1. Loosen the set screw (key 6) to remove
spring compression.
Table 2. NPS 1 Main Valve Capacities and Type 6358B Pilot Information
SET PRESSuRE
(1)
PSIg (bar)
10
(0,69)
15
(1,0)
18
(1,2)
18
(1,2)
25
(1,7)
30
(2,1)
30
(2,1)
40
(2,8)
50
(3,4)
60
(4,1)
70
(4,8)
80
(5,5)
90
(6,2)
100
(6,9)
SET PRESSuRE
PSIg (bar)
0.5
1.0
1.5
2.0
2.0
4.0
6.0
8.0
10.0
note
BuILD-uP OVER
,
SET PRESSuRE TO
BEgIn OPEnIng MaIn
VaLVE
, PSIg (bar)
(2)
0.8
(0,05)
0.8
(0,05)
0.8
(0,05)
0.9
(0,06)
0.9
(0,06)
0.9
(0,06)
1.4
(0,10)
1.4
(0,10)
1.4
(0,10)
1.4
(0,10)
1.6
(0,11)
1.6
(0,11)
1.6
(0,11)
1.6
(0,11)
BuILD-uP OVER SET
,
(1)
PRESSuRE TO FuLLy OPEn
MaIn VaLVE
(0,03)
0.25
(0,07)
0.25
(0,10)
0.25
(0,14)
0.25
(0,14)
0.30
(0,28)
0.30
(0,41)
0.30
(0,55)
0.30
(0,69)
0.30
2. Remove the screws (key 8) and remove the spring
case (key 2), spring (key 7), and spring seat (key 4).
3. Remove the screws (key 29) from the stem guide
assembly (key 31). Lift out the diaphragm (key 5)
and trim assembly.
4. Unscrew the hex nut (key 24) and remove the lower
spring guide (key 17), diaphragm head (key 3), and
inspect diaphragm (key 5).
5. Slide the washer (key 27), gasket (key 19), stem
guide assembly (key 31), and bushing (key 23) from
the pitot tube (key 18).
6. Remove the upper O-ring (key 30), O-ring holder
(key 21), O-ring (key 20), O-ring washer (key 22),
and lower O-ring (key 30) from around the pitot tube
(key 18).
7. Inspect and replace parts as necessary.
Type 289P
BuILD-uP OVER
PRESSuRE DROP
SET PRESSuRE
BELOW SET PRESSuRE
TO FuLLy OPEn MaIn
TO RESEaT PILOT,
VaLVE
, PSIg (bar)
(3)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.2
(0,08)
1.2
(0,08)
1.2
(0,08)
1.9
(0,13)
1.9
(0,13)
1.9
(0,13)
1.9
(0,13)
2.1
(0,14)
2.1
(0,14)
2.1
(0,14)
2.1
(0,14)
PRESSuRE DROP BELOW SET
PRESSuRE TO RESEaT PILOT,
, PSIg (bar)
PSIg (bar)
(3)
(0,017)
0.25
(0,017)
0.25
(0,017)
0.25
(0,017)
0.25
(0,021)
0.30
(0,021)
0.30
(0,021)
0.30
(0,021)
0.30
(0,021)
0.30
PSIg (bar)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
(0,017)
(0,017)
(0,017)
(0,017)
(0,021)
(0,021)
(0,021)
(0,021)
(0,021)
5