Bettis 2" ANSI 600 Multiport Flow Selector Valve Owner's Manual

Bettis 2
Bettis Canada Ltd.
4112 91A Street
Edmonton, Alberta, Canada T6E 5V2
Tel: (403) 450-3600
Fax: (403) 450-1400
Edmonton
SERVICE MANUAL No. I-0051
2" ANSI 600
MULTIPORT SELECTOR VALVE
CUSTOMER:
P.O.#:
W.O.#:
TAG:
DATE:
APPLIES TO OPERATOR MODEL:
DESCRIPTION
DWG.NO
PAGE
I
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
II
VALVE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
III
VALVE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
IV
VALVE DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
TYPICAL VALVE ASSEMBLY DRAWING . . . . . . . . . . . . . . . . . . . . . . . AB0272 . . . . . . .
6
VALVE DETAIL DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-0114 . . . . . . . .
7
V
ACTUATOR ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
VI
CAM ADJUSTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
SWITCHPAK ASSEMBLY DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . IB0048-08 . . . . .
12
ELECTRICAL ASSEMBLY DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . IB0163 . . . . . . . .
13
VII
VALVE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
VIII
VALVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
IX
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
TYPICAL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SB0704-X01 . . . .
16
NOTES
17
X
.............................................................
I-0051--.WPD/1
REV2:JUL-31-97
I
INTRODUCTION
As many as eight flow lines can be manifolded through one Bettis Multiport Selector Valve.
The valve allows diversion of an individual flow-line to a test outlet for testing or sampling, while
combining the flow of the other seven into a separate group outlet.
II VALVE SPECIFICATIONS
RATING
BODY
MATERIAL
DUCTILE
IRON
CAST
STEEL
TRIM
CONNECTION
MAXIMUM
WORKING
PRESSUR
E
PSIG
WORKING
TEMP
bC
STD.
1000
200
HIGH TEMP
1440
260
STD.
1000
200
HIGH TEMP
1440
260
WEIGH
T
EIGHT
FLOWLIN
E
INLET
PORTS
ONE
TEST
OUTLET
PORT
ONE
GROUP
OUTLE
T
PORT
VALVE
2 NPT
2 NPT
4 NPT
140
Cv = 67 FOR TEST OUTLET FLOW
Cv = 164 FOR GROUP OUTLET FLOW
SHELL HYDROSTATIC TEST PRESSURE = 2000 PSIG (13780 kPa)
STANDARD TRIM
MAXIMUM DIFFERENTIAL: TEST - GROUP = 120 PSIG (825 kPa)
MAXIMUM DIFFERENTIAL: GROUP - TEST = 80 PSIG (550 kPa)
HIGH TEMPERATURE TRIM
MAXIMUM DIFFERENTIAL: TEST - GROUP = 200 PSIG (1375 kPa)
MAXIMUM DIFFERENTIAL: GROUP- TEST = 120 PSIG (825 kPa)
INTERMITTENT SEAL EXPOSURE AT 285bC FOR 15 MINUTES WITH A MAXIMUM BODY
PRESSURE OF 1100 PSIG AND MAXIMUM DIFFERENTIAL.
ACTUATOR SPECIFICATIONS
PLUG POSITION TOLERANCE: ±2b
TORQUE @ MAXIMUM DIFFERENTIAL SHOULD BE BETWEEN 35 AND 50 ft.lbs.
ACTUATOR SPEED: 1.4 RPM
ACTUATOR WEIGHT: 50 lbs.
POSITION ACCURACY: ±1b
(i-0051--.wpd)
2
lbs.
III VALVE ASSEMBLY
Refer to typical valve assembly drawing on page 6, and valve detail drawing on page 7.
Ensure all the parts are clean and in good condition before assembling the Multiport Selector
Valve. Use Esso Valve Grease No. 1, or a suitable equivalent, to lubricate the components.
A. BODY: (10)
1. Visually inspect internal and external surfaces and threads.
2. Install the teflon / 25% carbon bushing (20).
B. PLUG: (30)
1. Lubricate and install the lower plug o-ring (32) with the teflon backup ring (36) "above" the
o-ring.
2. Lubricate and install the seal adjusting nut (38) with five wave springs (40) followed by the
wave spring backup (43). Make sure these springs are placed properly on the step of the
adjusting nut behind the plug seal. If these springs are not in the proper place, it is
impossible to get the plug seal (42) to hold pressure.
3. Lubricate and place the o-ring (48) and two teflon backup rings (52) in the plug seal groove,
then install the plug seal (42).
NOTE:
Push seal in by hand only.
4. Install the circular scraper (54) with two wave springs (58).
NOTE:
Apply a small amount of grease to the springs so they can stay in place during
assembly. Make sure the scraper fits freely in the plug bore. To check, push in
at both sides by hand, then let go and see if the scraper returns to its original
position.
5. Place the plug (30) in the body making sure that the plug seal and scraper are flush with the
plug bore (or has enough clearance between the scraper and the body bore to prevent
contact).
6. Install and grease the bearing cone (60).
(i-0051--.wpd)
3
C. BONNET: (62)
1. Lubricate and install the bearing cup (60) inside the bonnet.
2. Lubricate and install the o-ring (66) with the teflon backup ring (70) "above" the o-ring in the
inner groove.
3. Lubricate and install the o-ring (74) in the outer groove.
4. Install the wiper (72) and the grease nipple (78)
NOTE:
Grease to flush and fill passage at this time.
5. Set the bonnet in place with the actuator mounting holes straddling centreline of the "group
outlet" port, ensuring that the bonnet is placed flat on top of the valve body to prevent
damage to the
o-ring (66). Place bonnet such that the 1/2 NPT vent plug (68) is located over the group
outlet.
NOTE:
Push bonnet down only by hand or rubber mallet.
6. Install studs (80) with anti-seize lubricant C5-A high-temp copper compound, or a suitable
equivalent.
7. Tighten two of eight bonnet nuts (82) at 180b interval, then ensure that the plug (30) rotates
freely through a complete revolution.
8. Tighten the remaining nuts after confirming that the bonnet (62) and plug (30) have been
centered. Torque the nuts to 100 ft.lbs.
9. Adjust the plug seal (42), by first aligning the plug (30) with an open (ie. home test) port,
then turn the adjusting nut (38) counter clockwise, viewing towards the valve centerline, with
adjusting tool until the scraper (54) just touches the inside wall surface.
10.
Rotate plug (30) at least one revolution and check for binding or excessive turning torque
(ie. it should be 3 to 4 ft. lbs), then tighten the adjusting nut (30) with the supplied adjusting
tool counter clockwise, viewing towards the valve centerline, to 35 ft.lbs. of torque.
NOTE:
Do not overtighten the adjusting nut (38).
11.
Turn the plug (30) at least one revolution and check for smooth movement. If plug seal (42)
is binding at each port (30) when plug (30) is rotating, that means either the plug seal or the
wave springs (40) are not in the proper position. See disassembly procedure below if
required.
12.
Install vent plug (68) in the bonnet port.
13.
Perform any required leakage test(s).
(i-0051--.wpd)
4
IV VALVE DISASSEMBLY
Refer to typical valve assembly drawing on page 6.
1. Release the pressure to zero before proceeding.
2. Remove plug or fitting from port for access and turn the seal adjusting nut (38) clockwise to
release load on plug seal (42) and scraper (54) to clear body bore.
3. Remove the eight bonnet nuts (82) and studs (80). Remove the bonnet (62) with a straight
lift along the axis.
NOTE:
Bonnet has two 1/2NC tapped holes that can be used for lifting.
4. Remove the plug (30) from the valve body (10).
(i-0051--.wpd)
5
V ACTUATOR ASSEMBLY
A. PEDESTAL, CONNECTOR, SPEED REDUCER AND MOTOR
Refer to typical valve assembly drawing on page 6.
1. Set the speed reducer pedestal (200) in place.
2. Install two bolts (204), two lockwashers (206), two spacers (201), two studs (203), four
nuts (205), and four flatwashers (207) with indicator plate (202).
3. Install the lower connector (208).
4. Install the indicator (88) on the upper connector (210).
5. Install the upper connector (210) with setscrew (216) started.
6. Install the speed reducer (226) with key (218) and four bolts (232), lockwashers (236)
and nuts (234).
7. Check for free rotation between connector halves to confirm shaft alignment. Adjust if
necessary.
8. Tighten all mounting bolts and nuts.
9. Install and tighten the connector bolt (212) and locknut (214) and tighten the setscrew
(216).
10.
Install the motor (238) with four bolts (244) and lockwashers (246). Align and tighten.
B. LOCAL STEPPING COMMAND ELECTRICAL CONDUIT, SWITCHPAK PEDESTAL AND
CONNECTOR
Refer to the local stepping command electrical assembly drawing on page 13.
1. Set the Switchpak pedestal (449) in place and install four studs (452), four flatwashers
(455), four lockwashers (453), and four nuts (454).
2. Install the Switchpak connector (457) on the speed reducer shaft, followed by the
Switchpak coupling (455) and the Switchpak coupling adapter.
3. Off of the Switchpak pedestal, assemble the Switchpak (300), 1 NPT x 3/4 NPT reducer
(322), two 3/4 NPT close nipples (310), seal encloser (315), seal cover (314) and the
junction box (370).
4. Position the Switchpak and junction box assembly on the pedestal using the spacers
(371), bolts (372), lockwashers (374) and nuts (373), engaging the Switchpak coupling
adapter.
5. Install the four Switchpak bolts (458) and lockwashers (462).
(i-0051--.wpd)
8
6. Off the Switchpak pedestal assemble the push button station (350), local/remote switch
(355), jog push button (356), 3/4 NPT capped elbow (321), 3/4 NPT x 2.50 long nipple
(317) and 3/4 NPT x 3.00 long nipple (318). Thread into the seal encloser until the back
of the push button station is flush with the Switchpak pedestal. Loosely install the push
button station bolts (351), lockwashers (354) and nuts.
7. Between the motor terminal box (438) and the seal encloser, install one 3/4 NPT close
nipple (310), one 3/4 NPT x 3.00 long nipple (318), one 3/4 NPT x 3.25 long nipple
(311), one
3/4 NPT x 3.50 long nipple (312), two 3/4 NPT capped elbows (321), and the 3/4 NPT
union (320).
8. Install all wiring according to the applicable wiring diagram and local regulations.
9. Check shaft alignment by rotating both shafts independently, without binding occurring in
the connector. Adjust if necessary.
10.
With the Switchpak relay bracket and push button station aligned on the Switchpak
pedestal, tighten all mounting bolts, nuts and setscrews.
VI CAM ADJUSTING
Refer to Switchpak assembly drawing on page 12 and the typical wiring diagram on page 16.
A. Objective:
To align valve plug (130) at each port upon application of command signal to
electric actuator.
B. Pre-requisites
1. Switchpak is assembled and installed according to factory specifications.
2. Typical wiring and controls are according to wiring diagram on page 16, and the eight
on/off command switches and main on/off switch (disconnect means) are in place.
3. Power supply is present.
4. Connections
a) Terminals 13 and 14 connect 110 VAC electrical supply.
b) Terminals 11 and 12 connect 24 VDC command electrical supply with the positive (+)
lead to terminal 12.
NOTE:
(i-0051--.wpd)
The negative (-) will be connected to terminals 1 through 8 as the desired port
is selected. The 24 VDC electrical supply should have an ON/OFF switch to
isolate it from the unit while adjustments are being made.
9
C. Before proceeding with cam adjustment, ensure that:
1. All port plugs are removed; or the indicator is in place accurately, whichever is
applicable, to check for plug (130) and port position.
2. Cam setscrew (12) is flush with cam (10) and the signal adjuster screw (13) standout is
just sufficient to trigger microswitch (16).
3. Limit switch No. 1 (lowest on stack) corresponds with Port #1.
NOTE:
If signal adjuster screw (13) standout is excessive, it could damage the
microswitch (16) or lever during rotation. Notice that since cam setscrew (12)
is opposite to signal adjuster screw (13) on each cam, some cams can be
preset to reduce trial and error repetitions.
D. Cam Adjusting Procedure:
NOTE:
Before locking each cam (10) in place, confirm that signal adjuster screw (13)
standout is just sufficient to actuate microswitch (16).
1. Close main switch and command switch #1 to start actuator, then open main switch
manually when plug (130) and port #1 are aligned.
2. Rotate cam #1 until the signal adjuster screw (13) triggers the switch then advance the
cam, radially approximately 1b, to account for the motor and drive train momentum to
preset cam #1.
With the plug (130) still aligned to #1 port, make the following preliminary adjustments:
NOTE:
Opposing ports (180b to each other) can be preset.
i.e. number 4 port is opposite to number 8.
3. Preset cam #5. Align the trigger screw of cam #5 with the setscrew of cam #1. To
tighten cam #5 setscrew, insert Allen key between the two switch stacks.
4. Apply power (connect negative to terminal #2, turn switch on and off) and manually stop
at port #2. Adjust cam #2 as per step 2 above.
5. Preset cam #6. Align the trigger screw of cam #6 with the setscrew of cam #2. Again,
to tighten the setscrew, insert the Allen key between the two switch stacks.
6. Apply power (connect negative to terminal #3, turn switch on and off) and manually stop
at port #3, adjust cam #3 as per step 2 above.
7. Preset cam #7. Align the trigger screw of cam #7 with the setscrew of cam #3 and
tighten.
(i-0051--.wpd)
10
8. Apply power (connect negative to terminal #4, turn switch on and off) and manually stop
at port #4. Adjust cam #4 as per step 2 above. Preset cam #8 as per step 3 above.
9. Continue to activate command switches for remainder of ports, and adjust cams for
over/under travel.
NOTE:
Always open main switch or disconnect power when adjusting or servicing
Switchpak.
E. Jog Feature
1. Select "local setting" on the remote/local switch.
2. Depress the "JOG" switch and maintain it until the indicator is aligned over the desired
port then release it.
NOTE:
When viewed from above, the plug rotates counter-clockwise (CCW) only.
F. Finally
1. Pour seal or tag.
2. Install the 2 NPT caplug in the eight flowline ports.
3. Install the 2 NPT caplug in the test outlet port.
4. Install the 4 NPT caplug in the group outlet.
5. Install the 1 NPT caplug in the Switchpak.
6. Install the 1/2 NPT port plugs in the Switchpak.
(i-0051--.wpd)
11
VII VALVE INSTALLATION
Before installing the unit, observe the following:
1. Check for external physical damage.
2. Check for any visible leakage of gear oil from the speed reducer (226).
3. Visually inspect inside valve through group outlet port checking for damage, rust and debris.
4. Check the wiring arrangement using the attached diagram on page 16 or as supplied for a
particular order/unit.
5. Connect power supply and signal circuits to test the plug (30) location and motor (238)
rotation at each port.
NOTE:
The Multiport Selector Valve is factory adjusted when supplied with actuator and
should not require further adjustment.
6. Connect piping.
NOTE:
When hydrotesting external piping, position the plug between any two inlet ports
in order to equalize test pressure between the valve body and external piping,
and prevent possible seal damage from occurring.
VIII VALVE MAINTENANCE
The Multiport Selector Valve is shipped completely greased and lubricated, but it is
recommended to check the unit prior to operation if it is stored for more than one year.
1. Check speed reducer oil at regular intervals, and change the oil each hundred running
hours or once a year, whichever comes first. Use Mobile Synthetic SHC-634 ISO VG460
lubricant, or a suitable equivalent.
2. Make sure oil in the speed reducer (226) is at indicated level.
NOTE:
Excessive oil could cause pressure build-up, leakage and overheating which will
result in rapid wear of oil seals, bearing and gears.
3. Lubricate bearing (60) through grease nipple every six months, or as needed. Use Dow
Corning Extreme High Temp #41, or a suitable equivalent.
4. Do not lubricate motor since it is a sealed unit.
(i-0051--.wpd)
14
IX TROUBLESHOOTING
A. Actuator does not align plug (30) to port.
1. If the alignment is off only at one or two ports but the rest are aligned, then refer to
assembly and adjustment procedure on pages 3 through 14.
2. If alignment is off in the same direction for all ports then:
a) Check the valve/actuator connector for looseness.
b) Check the Switchpak/actuator connector for looseness.
c) Check the motor for stalling or overload.
d) Check the speed reducer for visual leakage or noisy gear.
e) Check the accuracy of the position indicator itself.
NOTE:
Refer to assembly and adjustment procedures on pages 3 through 14, as
required.
B. Plug seal assembly leaks.
1. Refer to specifications for differential pressure limitations.
2. Check if plug is aligned with port.
3. Remove plug from (home test) port and check for plug seal assembly damage (ie.
scratches).
4. If more information is required, contact the factory.
(i-0051--.wpd)
15
X MULTIPORT SELECTOR VALVE NOTES
(i-0051--.wpd/17 orig:dh-1988-09 rev2:rp/ps-1997-07-31 app
dist:(EF)O);(SM)P)
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