Bettis Manual: 3"" ANSI 600 Multiport Flow Selector Valve With High Differential Pressure Seal Service Manual | Bettis Manuals & Guides

Bettis Canada Ltd.
4112 91A Street
Edmonton, Alberta, Canada T6E 5V2
Tel: [phone]
Fax: [phone]

SERVICE MANUAL No. I-0052

3" ANSI 600

MULTIPORT SELECTOR VALVE

WITH HIGH DIFFERENTIAL PRESSURE SEAL

CUSTOMER:

P.O.#:

W.O.#:

TAG:

Edmonton

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 ....................... AB0230-30 ..... 6

V ACTUATOR ASSEMBLY................................................... 7

VI CAM ADJUSTING ........................................................ 8

SWITCHPAK ASSEMBLY DRAWING .......................... IB0048-08 ..... 11

VII VALVE INSTALLATION.................................................... 12

VIII VALVE MAINTENANCE ................................................... 12

IX TROUBLESHOOTING..................................................... 13

TYPICAL WIRING DIAGRAM ................................ SB0704-X01 .... 14

X NOTES . . . ............................................................. 15

I-0052--.WPD/1

ORIG: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 SIZE ANSI 300RF CONNECTION WEIGHT

TRIM MAXIMUM

WORKING

PRESSURE

PSIG

STD. 740 38

HIGH

TEMP

TRIM MAXIMUM

STD. 1440 38

HIGH

TEMP

600 260

RATING SIZE ANSI 600RF CONNECTION WEIGHT

WORKING

PRESSURE

PSIG

1200 260

WORKING

TEMP

bC

WORKING

TEMP

bC

Cv = 151 FOR TEST OUTLET FLOW

NPS EIGHT

FLOWLIN

E

INLET

PORTS

3x6 NPS 3 NPS 3 NPS 6 800

NPS EIGHT

FLOWLIN

E

INLET

PORTS

3x6 NPS 3 NPS 3 NPS 6 860

ONE

TEST

OUTLET

PORT

ONE

TEST

OUTLET

PORT

ONE

GROUP

OUTLET

PORT

ONE

GROUP

OUTLET

PORT

VALVE

lbs.

VALVE

lbs.

Cv = 369 FOR GROUP OUTLET FLOW

SHELL HYDROSTATIC TEST PRESSURE = 2160 PSIG (14900 kPa)

STANDARD TRIM
MAXIMUM DIFFERENTIAL: TEST - GROUP = 300 PSIG (2070 kPa)

MAXIMUM DIFFERENTIAL: GROUP - TEST = 250 PSIG (1720 kPa)

HIGH TEMPERATURE TRIM
MAXIMUM DIFFERENTIAL: TEST - GROUP = 400 PSIG (2760 kPa)

MAXIMUM DIFFERENTIAL: GROUP - TEST = 350 PSIG (2415 kPa)

INTERMITTENT SEAL EXPOSURE AT 285bC FOR 15 MINUTES WITH MAXIMUM BODY
PRESSURE OF 1100 PSIG AND MAXIMUM DIFFERENTIAL.

STATIC STATIONARY DIFFERENTIAL: TEST - GROUP 1000 PSID FOR 15 MINUTES @ 40bC

STATIC STATIONARY DIFFERENTIAL: GROUP - TEST 500 PSID FOR 15 MINUTES @ 40bC

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NOTE: In emergency situations only, the 3x6 Multiport Selector Valve can maintain a static

stationary differential pressure per specifications above. Do not operate the motor
operator at higher than maximum differential pressure because damage may result to
the motor operator.

ACTUATOR SPECIFICATIONS

PLUG POSITION TOLERANCE: ±2b

TORQUE @ MAXIMUM DIFFERENTIAL SHOULD BE BETWEEN 100 AND 170 ft.lbs.

ACTUATOR SPEED: 1.4 RPM

WEIGHT: 130 lbs.

POSITION ACCURACY: ±1b

III VALVE ASSEMBLY

Refer to typical assembly drawing on page 6.

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: (110)

1. Visually inspect internal and external surfaces and threads.

2. Lubricate and install teflon / 25% carbon plug bushing (120).

B. PLUG: (130)

1. Lubricate and install the lower plug o-ring (133) with the teflon backup ring (136)
"above" the o-ring.

2. Lubricate and install the seal adjusting nut (138) with three seal wave springs (140)
followed by the wave spring backup (143). Make sure these springs are placed
properly on the step of the adjusting nut. If these springs are not in the proper place,
it is impossible to get the plug seal assembly (145, 146) to hold pressure.

3. Install the seal back-up plate (143) against its' shoulder in the plug.

4. Lubricate and place the plug seal o-ring (149) on the stainless steel portion of the
plug seal assembly (145, 146). Lubricate and install the plug seal assembly, with the
plug seal o-ring properly positioned into the plug.

NOTE: Push seal into plug's seat pocket by hand only.

5. Install one scraper wave spring (158), followed by the scraper (154), into the plug
over the seal assembly.

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NOTE: Lubricate the spring and scraper so they can stay in place in the plug during

assembly. Ensure that the scraper fits freely in the plug. Check by pushing
and letting go to see if the scraper returns to its original position.

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6. Lower the plug (130) assembly vertically into the body ensuring that the plug seal
and scraper clear the body bore. When installed the plug assembly rests on top of
the bushing.

7. Install and grease the tapered bearing cone (160) and rollers onto the plug.

C. BONNET: (162)

1. Lubricate and install the bearing cup (160) inside the bonnet.

2. Lubricate and install the o-ring (167) and the teflon backup ring (170) in the I.D.
groove.

NOTE: Backup ring (170) is above o-ring (167) when the bonnet is installed on the

body.

3. Lubricate and install the o-ring (173) in the outer groove.

4. Install the wiper (171) and the grease nipple (178).

NOTE: Grease to flush and fill passage at this time.

5. Set the bonnet in place with the actuator mounting holes straddling centerline of the
"group outlet" port, ensuring that the bonnet is placed flat on top of the valve body to
prevent damaging the o-ring (167). Place bonnet such that 1/2 NPT is located over
group outlet.

NOTE: Push bonnet down into the body by hand or by using rubber mallet.

6. Install studs (180) with anti-seize lubricant C5-A high-temp copper compound, or a
suitable equivalent.

7. Tighten two of the sixteen bonnet nuts (182) at a 180b interval, then ensure that the
plug (130) rotates freely through a complete revolution.

8. Tighten the remaining nuts after confirming bonnet (162) and plug (130) have been
centred. Torque the nuts to 250 ft.lbs.

9. Adjust the plug seal assembly (145, 146), by first aligning the plug (130) with an open
(ie. home test) port, then turn the adjusting nut (138) counter clockwise, viewing
towards the plug centerline, with adjusting tool until the scraper (154) just touches
the inside wall surface.

10. Rotate plug (130) at least one revolution and check for binding or excessive turning
torque (ie. it should be 7 to 10 ft.lbs), then tighten the adjusting nut (138) with the
supplied adjusting tool counter clockwise, viewing towards the plug centerline, to 35
ft.lbs. of torque.

NOTE: Do not over tighten the adjusting nut (138) as damage to the seal assembly

may result.

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11. Turn the plug (130) at least one revolution and check for smooth movement. If plug
seal assembly (145, 146) is binding at each port when plug (130) is rotating, that
means either the plug seal or the wave springs (140) are not in the proper position.
See disassembly procedure below, if required.

12. Install vent plug (176) in the bonnet port.

13. Perform any required leakage test(s).

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 (138) clockwise
to release load on plug seal assembly (145, 146) and scraper (154) to clear body bore.

3. Remove the sixteen bonnet nuts (182) and studs (180). Remove the bonnet (162) with a
straight lift along axis.

NOTE: Bonnet has two tapped holes that can be used for lifting.

4. Remove the plug (130) from the valve body (110).

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