XX. Setting and Testing (Cont.)
B.2 39MV07, 39MV22 AND 39MV72
1.
Attach Pilot to Main Valve using two Socket Head
Cap Screws (Bracket).
2. Install the tubes into the fittings for the inlet and
dome ports. Make sure the tube ends are fully
inserted before torquing. Begin torquing the fitting,
about midway down, verify that Swagelok Gap
Inspection Gauge (Swagelok P/N MS-IG-468) will
go. Continue to torque down fitting until Swagelok
Gap Inspection Gauge will not go. After torquing,
remove to assure the ferrule is in good contact with
the tubing. Reinstall the tubing.
3. Install tubing to connect the vent port of the Pilot
to the outlet of the Main Valve in the standard
configuration.
4. Final standard configuration for the modulation pilot
valves without any options is shown in Figures 65
through 67.
C. Integral Sensing Ring
(Figure 65)
Integral sensing is the standard pressure connection to
the pilot valve used on the 2900 Gen II Pilot Operated
Safety Relief Valve. With the Integral Sensing Ring,
the pilot valve pressure can be picked up just before
the inlet of the main valve. Before testing or startup,
ensure that the tubing is reconnected to the integral
sensing ring. For pressure testing on a shop test stand;
additional gaskets can be ordered to complete testing of
the valve.
Note: One gasket supplied with the integral
sense kit is intended for end user
installations.
The flange gaskets which are supplied by the customer
are to be inserted between the Valve Nozzle and the
Sensing Ring and between the Sensing Ring and the test
system flange.
Reasons for failure:
1.
Any leakage from Pilot at 4% below valve set
pressure or 2 psig (0.14 psig), whichever is
greater. The 39MV22 and 39MV72 may have 50
bubbles per minute at 5% below the set pressures
at or above 2251 psig (155.2 barg) and none at
pressures below 2250 psig (155.1 barg).
2.
Main Valve equipped with soft seats.
a.
For Main Valve equipped with 39MV22 and
39MV72, no leakage (0 bpm) is acceptable at
5% below valve set pressure or 2 psig (0.14
barg), whichever is greater. For set pressures
2250 psig (155.1 barg) and above, 50 bpm is
acceptable for both Pilot and Main Valve.
b. For all other valve types, no leakage (0 bpm) is
acceptable at 4% below valve set pressure or 2
psig (0.14 barg), whichever if greater.
c. (i) Paragraph 2.b(ii) refers to testing valves
with Teflon O-rings specified for elevated
temperatures above 200ºF (93 °C).
d. (ii) Check the unit ticket for the temperature
and verify that it is above 200ºF (93°C). Test
air/gas valves on room temperature air and
check for leakage. If the valve is tight, testing
is complete. If not, check the valve leakage on
elevated temperature air between 201-500ºF
(94-260°C).
Note: No need to pop the valve on elevated
temperature air.
Figure 67: 39MV72
Figure 66: 39MV22
Figure 65: 39MV07
Consolidated 2900 Series Generation II POSRV Instruction Manual
| 77
© 2021 Baker Hughes Company. All rights reserved.
