Metso Quadra-Powr II Maintance Manual

IMO-031 EN • 11/2017

Quadra-Powr® II
Spring-Diaphragm Actuators

Installation, Maintenance and
Operating Instructions

TABLE OF CONTENTS

1. GENERAL ................................................................... 3

1.1 Warning ............................................................................ 3

1.2 Handling Quadra-Powr II Actuators ........................ 3

2. INSTALLATION .......................................................... 3

2.1 Operation ......................................................................... 4

3. MAINTENANCE ......................................................... 4

3.1 Disassembly ..................................................................... 4

3.2 Assembly .......................................................................... 5

3.3 Exploded View ................................................................ 6

3.4 Parts List/Bill of Material .............................................7

4. ACCESSORIES ........................................................... 8

5. REPAIR KITS/SPARE PARTS ...................................... 9

IMO 11/17

2 IMO-031 EN

READ THESE INSTRUCTIONS FIRST!

These instructions provide information about safe handling and operation of the valve.
If you require additional assistance, please contact the manufacturer or manufacturer’s representative.
Addresses and phone numbers are printed on the back cover.
See also www.metso.com/valves for the latest documentation.

SAVE THESE INSTRUCTIONS!

1. GENERAL

This instruction manual contains important information
regarding the installation, operation and troubleshooting
of the Jamesbury Quadra-Powr II spring-diaphragm actu­ators. This unique spring-diaphragm actuator designed
for rotary valves provides safe, smooth and reliable valve
actuation at minimal pressures and up to 100 psi (6.9 BAR).
Please read these instructions carefully and save them for
further reference.

1.1 WARNING:

KEEP HANDS AND CLOTHING AWAY FROM THE VALVE PORTS AT
ALL TIMES.

DO NOT ATTEMPT TO DISASSEMBLE THE SPRING CARTRIDGE.
DISASSEMBLY OF THE SPRING PACKAGE MAY RESULT IN SERIOUS
PERSONAL INJURY. IF MAINTENANCE IS REQUIRED, THE ENTIRE
ACTUATOR MUST BE RETURNED TO JAMESBURY.

SHUTOFF AND BLEED ALL SUPPLY LINES BEFORE INSTALLATION
OR SERVICING. DO NOT REMOVE DIAPHRAGM CASING HEX HEAD
SCREWS 25 & 27, NUTS 29 OR DIAPHRAGM CASING 15 WHILE
ACTUATOR IS PRESSURIZED.

BEFORE INSTALLING THE VALVE AND ACTUATOR, BE SURE THAT
THE INDICATOR POINTER ON TOP OF THE ACTUATOR AND THE
IDENTIFICATION PLATE IN FEMALE ACTUATORS ARE CORRECTLY
INDICATING THE VALVE POSITION. FAILURE TO ASSEMBLE THESE
PRODUCTS TO INDICATE THE CORRECT VALVE POSITION COULD
RESULT IN PERSONAL INJURY.

AN ACTUATOR MUST BE SIZED ACCURATELY FOR PROPER
OPERATION. REFER TO INFORMATION ON ACTUATOR END OF
STROKE TORQUES AND THE APPROPRIATE VALVE BULLETIN FOR
OPERATING TORQUES.

WHEN SERVICING A VALVE ACTUATOR ASSEMBLY,THE BEST
PRACTICE IS TO REMOVE THE ENTIRE ASSEMBLY FROM SERVICE.
IF THE ACTUATOR IS REMOVED FROM THE VALVE, IT SHOULD
BE REMOUNTED ON THAT SAME VALVE AFTER SERVICING IS
COMPLETED.THE ACTUATOR MUST BE READJUSTED FOR PROPER
OPEN AND CLOSE POSITION EACH TIME IT IS REMOUNTED.

ACTUATORS ARE NOT TO BE LIFTED USING THE 3/8” NPT IN
THE DIAPHRAGM CASING. HANDLING OF THE ACTUATOR IS
ACCOMPLISHED BY USING TWO M10 EYE NUTS SCREWED
ONTO THE TWO HEX HEAD SCREWS 25 ON THE DIAPHRAGM
CASING 15,THAT ARE FACING THE OPPOSITE DIRECTION OF
THE OTHER FASTENERS. FOR THE QP6, USE FOUR M10 EYENUTS.

(ACTUATOR WEIGHT: SEE TABLE 1.

1.2 Handling Quadra-Powr II Actuators

Handling of the actuator is to be accomplished by using
two M10 eye-nuts screwed onto the two hex head screws
(25), which are facing the opposite direction of the other
fasteners. For the QP6 use four M10 eye-nuts.

TABLE 1

Handling Quadra-Powr II Actuators

Actuator Series Approximate Weight Lb. (kg)

QP1 23 (10)

QP2 42 (19)

QP3 72(33)

QP4 117 (53)

QP5 235 (107)

Qp6 520 (235)

2. INSTALLATION

1. Check to see that the position indicator on the
actuator is assembled correctly for the desired failure
mode, either spring-to-close or spring-to-open. In the
springto- close mode, the actuator will cycle clockwise
to close upon loss of pressure. In the spring-to-open
mode, the actuator will cycle counterclockwise to open
upon loss of pressure.

2. If the actuator is not set up in the conguration desired,
remove the four hex head screws (33), indicator plate
(12), indicator pointer (24), and remount them on the
opposite mounting surface. In the female actuators, the
fastener identication plate shows the failure mode of
the actuator.

SPRING-TO-CLOSE

In this mode the actuator will cycle clockwise to close upon loss

of pressure

SPRING-TO-OPEN

In this mode, the actuator will cycle counterclockwise

to open upon loss of pressure

Figure 1

Figure 2

IMO 11/17

IMO-031 EN 3

3. Mount the actuator to the valve following the directions
in the AMI (Actuator Mounting Instructions) or valve IMO.

4. Connect a regulated air supply to the 3/8” NPT tting
in the diaphragm casing (15). *QP6 has a 3/4” NPT
air supply connection. CAUTION: The maximum
operating pressure is 100 psi (6.9 BAR).

5. Adjust the stop screws (19) by releasing the jam
nut (23) and turning. Stops can only be adjusted
when driver arm (3) is o the stop screws being
adjusted. (Maximum rotation adjustment ±5°.) Be sure
to retighten jam nut (23).

2.1 Operation

The operating pressure, output torque and drive type
is determined by the actuator designation. Maximum
operating pressure is 100 psi (6.9 BAR). (See Table 2)

Actuator designation example: QP4C/34 is a series QP4
spring diaphragm actuator that has a 60 psi (4.1 BAR)
spring, an end of stroke output torque of 200 FT•LBS (272
N•m) and uses a 34mm spline to drive the valve.

Before operating make sure all tapped holes in the body
which are not being used are resealed with plastic caps.

TABLE 2

Actu-

ator

Series

Spring

Version

Operating

Pressure In

psl (BAR)

End of
Spring
Stroke

Torque In

FT•LBS (N•m)

Drive Type

QP1 C 60 (4.1) 25 (34)

14 - 14mm Spline

M - 9/16” Square

QP2

A
B
C
D

20* (1.4)

40 (2.8)
60 (4.1)
80 (5.5)

11 (15)
38 (52)
57 (77)

74 (100)

14 - 14 mm Spline
18 - 18 mm Spline
25 - 25 mm Spline

M - 9/16” Square

QP3

A
B
C
D

20* (1.4)

40 (2.8)
60 (4.1)
80 (5.5)

26 (35)

76 (103)
114 (155)
146 (198)

18 - 18 mm Spline

25 - 25mm Spline

34 - 34 mm Spline

M - 3/4” Square

QP4

B
C
D

40 (2.8)
60 (4.1)
80 (5.5)

153 (207)
229 (310)
294 (399)

25 - 25 mm Spline
34 - 34 mm Spline

M - 1” Square

QP5

B
C
D

40 (2.8)
60 (4.1)
80 (5.5)

305 (414)
458 (621)
587 (796)

34 - 34 mm Spline

M - 1” Square

QP6

B
C
D

40 (2.8)
60 (4.1)
80 (5.5)

527 (716)

818 (1112)

1076 (1463)

45 - 45 mm Spline

* For Direct Control Applications

3. MAINTENANCE

Before working on a Quadra-Powr II actuator, note that all
fasteners except socket head shoulder screw (8) are metric.

Although Metso’s Jamesbury actuators are designed to work
under severe conditions, proper preventative maintenance
can signicantly help to prevent unplanned downtime and
in real terms reduce the total cost of ownership. Metso
recommends inspecting actuators at least every ve (5)
years. The inspection and maintenance frequency depends
on the actual application and process condition. Standard
replacement of “soft” parts in Quadra-Powr II actuators

consists of items numbered 6, 14, 31, 62 and 64. See REPAIR
KITS/SPARE PARTS Section.

1. When replacing the diaphragm use caution and be sure
the air supply is disconnected. Back o nuts (29) from
the hex head screws (25) or (27),holding the diaphragm
casing and spring housing together until the nuts are
ush with the hex head screw ends.Do not remove the
nuts completely from the hex head screws. If tension
still exists on the hex head screws, then the spring
package is not properly contained. Stop disassembly:
retighten nuts and return the actuator to the factory. If
the spring package proves to be intact remove the nuts
(29) and remove the hex head screws (25) or (27).

2. Lift o diaphragm casing (15) and diaphragm (14).

3. Inspect the inside of both the diaphragm casing (15) and
the spring housing (32) for any rough spots or foreign
matter which may cause abrasion to the diaphragm.
Check the plastic guide buttons (64) inserted to the
diaphragm retainer. Replace the ones which have been
worn out.

4. Place the new diaphragm (14) on the diaphragm
retainer (10). Place the diaphragm casing (15) on the
spring housing (32) and line up all the holes. Do not
pinch or stretch the diaphragm.

5. Insert hex head screws (25) or (27) in all holes. Do not
force the hex head screws through the diaphragm. Install
nuts (29) on screws and tighten uniformly using the
standard practice of tightening diametrically opposite
bolts in sequence with the torque requirements from
(Table 3).

3.1 Disassembly

When disassembly of the actuator is required for maintenance,
remove the actuator to a clean well lit area. Handling of the
actuator is accomplished by using two (2) M10 eye-nuts
screwed on to the two hex head screws (25), that are facing
the opposite direction of the other fasteners holding the
diaphragm casing (15), and spring housing (32) and lifting the
actuator by the eye-nuts, not the 3/8” NPT or 3/4” NPT in the
diaphragm casing (15). For the QP6 use four M10 eye-nuts.

Prior to disassembling the actuator, obtain the following
tools: two (2) M10 wrenches,preferably one being a ratchet,
one (1) hex (Allen) wrench, 3mm for QP1, 5mm for QP2, 3
and 4, 6mm for QP5, 10mm for QP6, one (1) screwdriver,
one (1) plastic faced mallet.

NOTE: When disassembling the QP6 DO NOT remove the
socket shoulder screw (8) AND the diaphragm casing (15)
at the same time. Either the socket shoulder screw (8) or
the diaphragm casing (15) must be in place while working
on the other.

1. Remove the cover (5) by removing six socket cap
screws (21) on QP1 - 5, eight socket cap screws on
the QP6. If the cover cannot be removed, tap it with
a plastic hammer to break the adhesion of the paint
between the body and cover joint.

IMO 11/17

4 IMO-031 EN

2. Use air pressure to remove spring preload by partially
stroking the actuator. If the diaphragm (14) is ruptured,
replace as instructed in the previous section.

3. To remove the socket shoulder screw (8) (or socket cap
screw in QP1) that holds the clevis (7) to the driver arm
(3), rst apply some heat to the lower arm to loosen the
Loctite® on threads of the socket shoulder screw.

4. Slowly increase air pressure until the driver arm (3)
moves slightly o the stop screw (19). Remove the
socket shoulder screw (8).

5. Slowly relieve the air pressure in the actuator. The clevis
(7) should be set against the spring retainer (30), and
positioned symmetrically about the slot in the spring
housing.

6. Shut o and bleed the air pressure to zero. Disconnect
the air lines.

7. Remove the hex head screws (25) and (27), and hex
nuts (29) holding the diaphragm casing and spring
housing together.

8. Lift o the diaphragm casing (15), diaphragm (14)
and diaphragm retainer (10). Inspect the diaphragm
and guide buttons (64) for signs of wear, rupture or
mechanical damage.

9. Inspect the inside of both the diaphragm casing and
spring housing, as well as the outside of the diaphragm
retainer for any rough spots or foreign matter which
may cause abrasion of the diaphragm.

10. Lift the entire spring cartridge out of the unit.

WARNING: DISASSEMBLY OF THE SPRING PACKAGE
SHOULD NOT BE ATTEMPTED. SPECIAL EQUIPMENT IS
REQUIRED. DISASSEMBLY OF THE SPRING PACKAGE MAY
RESULT IN SERIOUS PERSONAL INJURY.IF MAINTENANCE
IS REQUIRED SHIP THE ENTIRE ACTUATOR TO JAMESBURY.

It is usually not necessary to remove the spring housing
(32) from the body (1). However, if removal is required, heat
must be used to loosen the Loctite. When reassembling, the
information in (Table 3), torque and Loctite recommendations
must be met. All fasteners should use Loctite 271 on the
threads. Inspect and clean all components.

Good practice dictates that all bearings should be removed
and replaced. See the SERVICE KIT section of this IMO for
the proper actuator series repair kit number.

3.2 Assembly

To aid assembly, spread light oil or grease on the outside
diameter of the new bearings.

1. Press driver arm bearings (6) into the body (1) and
covers (5).This is best done in an arbor press, but a
vise could be used if care is taken not to damage the
bearing. Driver arm bearings are to be pressed in until
they are ush or 0.015 in.(0.38 mm) below the body
counterbore or the inside cover surface. Press clevis
bearings (62) into the clevis (7).

2. Apply grease (Molykote GN grease) to inside of bearings
for the driver arm, but not for the clevis. The shoulder
screw (8) barrel needs to be greased instead.

3. Place the thrust bearing (31) into the counterbore in the
body of QP2-QP6 actuators. Slide the other thrust bearing
onto the trunnion of the driver arm (3). In the case of QP1,
assemble the lower cover (5) using the socket at head
screws (21). Slide the thrust bearings onto the driver arm
at each end. Place the driver in the body.

4. Apply a good grade of grease to the O.D. of the outer
spring (43). Lower the spring cartridge into the spring
housing (32). Make sure that the spring package is not
resting on the hex head cap screws (38) which hold the
spring housing and body together.

5. Place the diaphragm retainer (10) with the new guide
buttons on the diaphragm plate (65).The orientation of
the diaphragm retainer should be such that the guide
button must be contacting the spring housing. Place
the new diaphragm (14) on the diaphragm plate. Put
the diaphragm casing (15) on and line up all the holes.
Do not pinch or stretch the diaphragm.

6. Insert the hex head bolts (25) and (27) in all holes,
(four are reversed for handling on the QP6; two
are reversed on QP1 - QP5). Do not force the bolts
through the diaphragm. Install nuts (29) and tighten
uniformly using the standard practice of tightening
diametrically opposite bolts in sequence. Follow
(Table 3) for tightening torques.

7. Connect a regulated air supply to the pressure port
and slowly increase the air pressure until the holes in
the clevis and driver arm are aligned. Turn clevis a few
degrees, if required, to align holes.

8. Apply Loctite 271 on the threads of the shoulder screw.
Insert it through the driver arm and clevis. Tighten per
(Table 3).

(continued on page 7)

TABLE 3

Torque Requirements

Required Tightening Torques In FT•LBS (N•m)

For Various Fasteners

QP1 QP2 QP3 QP4 QP5 QP6

Nuts for Hex
Head Screws
thru Diaphragm
Casing (29)

18

(24)18(24)18(24)18(24)18(24)16(22)

Socket Head
Cover Screws (21)

15

(21)15(21)15(21)15(21)33(21)33(21)

Socket Head
Shoulder Screw (8)

35

(48)55(75)

132

(179)

132

(179)

132

(179)

215

(292)

Nuts on Actuator
Rod (74)

55

(74)55(75)88(119)

132

(176)

176

(239)

215

(292)

Hex Head Screws
between Body and
Spring Housing (38)

—

18

(24)30(40)30(40)55(75)55(75)

Nuts for Socket
Head Screws
between Body and
Spring Housing (39)

5

(7)

— — — — —

IMO 11/17

IMO-031 EN 5

QP2, QP3,QP4, QP5 & QP6

80

29

8

24

3

31

39

1

6

19

23

71

3

81

FEMALE

DRIVE

24

5 or 83

21

12

33

9

5

21

33

12

MALE

DRIVE

Hex Nuts on Actuator Rod are

Tigtened Against the

Diaphragm Plate and Clevis

65

74

4

62

60, 45

27, 25

15

14

64

10

For Clarity,

Spring #1 Shown

73, 63,43

38

30

7

7

3

1

32

78, 77,76,53

QP4AC

T

QPI, QP2A

EXPLODED VIEW

Figure 3

EXPLODED VIEW

IMO 11/17

6 IMO-031 EN

PARTS LIST AND BILL OF MATERIALS

Bills Of Materials And Parts

Item Part Name

QP1C/14

QP1C/M

QP2A/14

QP2A/M

QP2D/14
QP2D/18
QP2D/25
QP2D/M

QP3D/18
QP3D/25
QP3D/34

QP3D/M

QP4D/25
QP4D/34

QP4D/M

QP5D/34

QP5D/M

QP6D/45

1 Body 1 1 1 1 1 1
3 Driver Arm 1 1 1 1 1 1
4 Actuator Rod 1 1 1 1 1 1
5 Cover 1 1 1 1 1 1
6 Bearing-Driver Arm 2 2 2 2 2 2
7 Clevis 1 1 1 1 1 1
8 Socket Head Shoulder Screw 1 1 1 1 1 1

9 Retaining Ring* 1 1 1 1 1 1
10 Diaphragm Retainer 1 1 1 1 1 1
12 Indicator Plate 1 1 1 1 1 1
14 Diaphragm 1 1 1 1 1 1
15 Diaphragm Casing 1 1 1 1 1 1
19 Slotted Set Screw 2 2 2 2 2 2
21 Socket Cap Screw 8 6 6 6 6 8
23 Hex Jam Nut 2 N/A 2 2 2 2
24 Indicator Pointer 1 1 1 1 1 1
25 Hex Head Cap Screw 2 2 2 2 2 2
27 Hex Head Cap Screw 6 10 10 14 22 32
29 Centerlock Hex Nut 8 12 12 16 24 36
30 Spring Retainer 1 1 1 1 1 1
31 Thrust Bearing 2 2 2 2 2 2
32 Spring Housing 1 1 1 1 1 1
33 Cap Screw 4 4 4 4 4 4
38 Cap Screw 4 4 6 10 10 8
39 Hex Nut 4 N/A N/A N/A N/A N/A
43 Spring #1 1 1 1 1 1 1
45 Caution Plate 1 1 1 1 1 1
53 Identication Tag 1 1 1 1 1 1
60 Caution Plate 1 1 1 1 1 1
62 Clevis Bearing 2 2 2 2 2 2
63 Spring #2 N/A 1 1 1 1 1
64 Guide Buttons 4 4 4 4 4 8
65 Diaphragm Plate 1 1 1 1 1 1
71 Relief Vent 1 1 1 1 1 1
73 Spring #3 2 1 1 1 1 1
74 Hex Jam Nut 2 4 2 2 2 2
76 Series Tag 1 1 1 1 1 1
77 Driver Tag 1 1 1 1 1 –
80 Plug 1 1 1 1 1 1
81 Name Plate** 1 1 1 1 1 1
83 Cover 1 N/A N/A N/A N/A N/A

* IN MALE ACTUATORS ONLY.
** IN FEMALE ACTUATORS ONLY.
NOTE: SPRING VERSION C DOES NOT HAVE ITEM 73.

SPRING VERSION A AND B DO NOT HAVE ITEMS 63 AND 73.

IMO 11/17

IMO-031 EN 7

9. Back o the nut (74) against clevis (7). Apply Loctite 271
on the threads of the actuator rod. Tighten nut against
clevis by applying torque from (Table 3), as the nut is
being tightened, rmly hold the clevis with a wrench,
since the unsupported driver arm may tend to tip over.

10. Slowly release air pressure. Assemble cover by using
the socket head screws (21). Apply tightening torque
per (Table 3).

11. Install the indicator pointer (24) if this was previously
disassembled. In female actuators make certain that
the indicator points to the inscribed line in the driver
arm. In male actuators, hold the indicator pointer
in place with a retaining ring (9). NOTE: Refer to
Installation instructions for spring-to-close or spring­to-open conguration.

4. ACCESSORIES

Quadra-Powr II actuators can be locked in the spring
uncompressed mode.Refer to IMO-30 for more information.

Quadra-Powr II actuators can easily be reworked to have
100% adjustability in air stroke.Consult factory if this feature
is desired.

Quadra-Powr II actuators are designed with one or two
accessory mounting pads; ISO and Jamesbury standard.
Refer to Figure “6”. Consult Jamesbury linkage manual for
accessory linkage kits.

QP1C-QP2A Actuators

Figure 4

QP Actuators

Figure 5

IMO 11/17

8 IMO-031 EN

5. REPAIR KITS/SPARE PARTS

SERVICE KITS

Model Complete Diaphragm

Series QP1 Actuator RKQ-54 RKQ-59

Series QP2 Actuator* RKQ-55 RKQ-60

Series QP3 Actuator RKQ-56 RKQ-61

Series QP4 Actuator RKQ-57 RKQ-62

Series QP5 Actuator RKQ-58 RKQ-63

Series QP6 Actuator RKQ-64 RKQ-66

Series QP7 Actuator RKQ-65 RKQ-67

* Note: QPZA uses Complete Kit RKQ-81 and Diaphragm Kit RKQ-60.

We recommend that actuators be directed to our service
centers for maintenance. The service centers are equipped
to provide rapid turn-around at a reasonable cost and oer
new actuator warranty with all reconditioned actuators.

NOTE: When sending goods to the service center for

repair, do not disassemble them. Clean the actuator prior to
shipping.

For further information on spare parts and service or
assistance visit our web-site at www.metso.com/valves.

NOTE: When ordering spare parts, always include the
following information:

a. Actuator catalog code from label,

b. If the valve is serialized – the serial number (from

identication plate)

c. From Figure 3, the ballooned part number, part

name and quantity required

QP1C-QP2A Actuators

Figure 6

ISO Mount

QP1, 2, 3, 4, 5, 6

J Mount

QP1, 2, 4, 5

J Mount

QP3

IMO 11/17

IMO-031 EN 9

IMO 11/17

10 IMO-031 EN

IMO 11/17

IMO-031 EN 11

Subject to change without prior notice.

Metso Flow Control Inc.

Europe, Vanha Porvoontie 229, P.O. Box 304, FI-01301 Vantaa, Finland. Te l. [phone]. Fax [phone]

North America, 44 Bowditch Drive, P. O. Box 8044, Shrewsbury, M A 01545, USA. Tel. [phone]. Fax [phone]

South America, Av. Independéncia, 2500-Iporanga, 18087-101, Sorocaba-São Paulo, Brazil. Tel. [phone]. Fax [phone]

Asia Pacic, 238B Thomson Road, #17-01 Novena Square Tower B, Singapore 307685. Tel. [phone]. Fax [phone]

China, 11/F, China Youth Plaza, No.19 North Rd of East 3rd Ring Rd, Chaoyang District, Beijing 100020, China. Tel. [phone]. Fax [phone]

Middle East, Roundabout 8, Unit AB-07, P. O. Box 17175, Jebel Ali Freezone, Dubai, United Arab Emirates. Tel. [phone]. Fax [phone]

www.metso.com/valves

12 IMO-111 EN