Installation and maintenance instructions for Class 150 knife gate valves
GENERAL INFORMATION
Mating line flanges must be properly aligned.
The Keystone OS1700 knife gate valve is a bidirectional zero leakage ASME Class 150 rated
knife gate valve. Designed for the rigors of high
pressure slurry and oil sands applications.
Please take note of specific installation tags
provided with each OS1700 series valve.
Compliance to ASME B16.34 Class
150, Valves—Flanged and MSS SP 135
(Short Face-to-Face).
Bi-directional valve, no special concerns in
relation to direction of flow are required when
installing the valve.
3M28CHX8CZZUCRCC6Z11CAB00000001
Part numberManufacturer’s Part Number11011101
Serial numberManufacturer’s Serial Number55555-5555-555
SizeNPS Valve size28
ClassPressure rating per conforming standard150
DutyN/AN/A
Ring materialN/AN/A
Service limitLimits in pressure and temperature operation 285psi/100F
ConformanceStandard used for design and manufactureASME B16.34, MSS SP-135
CRNCanadian registration number0C13921.2
Body materialCompliance standard for body materialWCB/LCB
Gate materialCompliance standard for gate material17-4
Seat materialSeat materialHNBR
Packing material Packing materialAFPL#3
1. Examine entire valve and report any damage
or discrepancies immediately.
2. Accessories, if any, including solenoids,
limit switches, positioners, etc., are
tested for functionality prior to shipment.
Examine carefully for damage which may
occur during shipment.
3. Operators: Standard manual hand wheels
may be shipped loose for field installation.
It is necessary to use a pipe wrench or large
ØF
C2
C1
C
G
crescent wrench to properly tighten the hand
wheel retaining nut. Be sure to fully tighten.
4. Packing assembly: The packing gland bolts
should be checked and adjusted to obtain a
first time packing seal. Packing gland nuts
may become slightly loose when valve is
shipped. Field adjustment is expected and
desired. (Tighten just enough to stop any
leakage. Overtightening may increase valve
operating torque and shorten packing life).
OS1700 standard flange configuration is
“flanged” where port flange mounting holes are
in tapped flange holes in chest area to prevent
damage to internal wall profile.
drilled and tapped. Flange mounting holes in
chest area are limited to a depth of 1 x flange
bolt diameter, and other flange bolt holes have
NOTE
Optional through bolting configurations are also available.
a minimum depth of 1.5 x flange bolt diameter.
It is recommended that studs be used on all
flange mounting holes in chest area.
OS1700 Series valves are designed to suit flanges
compliant to ASME B16.5 and B16.47, and
gaskets designed to ASME VIII-1 Appendix 2, and
ASME B16.20 and B16.21. Torque on Flange bolt
should not exceed values shown in Table 1.
Maximum torque should not be exceeded to insure
threaded flange holes in valve body are not damaged.
The recommended bolt length assumes; final gasket
thickness = .125", min F436 flatwasher thickness 1x
bolt diameter thread depth, and common heavy hex
bolt lengths. Use the below equation to calculate
flange bolt length per your application. It is strongly
recommended stud to be used to achieve maximum
thread engagement length.
1x Bolt dia
Gasket thickness
Bolt
length
A is the raised face on the body
Valve body
raised face
Flange thickness including raised face
A
Washer
thickness (F436)
Stud
oval
is the raised face
A
on the body
Nut height
(heavy hex)
Flange thickness
including raised face
Washer thickness (F436)
Extra length
Bolt length = Washer thickness + Flange thickness + Flange raised face + Gasket thickness + 1 x Bolt dia
Stud length = Nut Height + Washer thickness + Flange thickness + Flange raised face + Gasket thickness + 1 x Bolt dia + Extra Length
GASKET DETAIL - FIGURE 5
Gasket ID
matched to
Port ID
Gasket
Valve body
ACTUATION
OS1700 has four options for actuation:
Hydraulic cylinder (HC), Bevel gearbox (BG) with
manual hand wheel, Manual handwheel (MH),
and Pneumatic cylinder (AC).
Hydraulic cylinder option:
Designed to operate with hydraulic fluid
pressure of less than 2000 psi.
Pneumatic cylinder option:
Manual handwheel option:
Designed to operate with a rim-pull of less than
80 lb.
Bevel gear option:
Designed to operate with a rim-pull of less than
80 lb.
Designed to operate with air pressure of 75 psiWARNING
To minimize stress concentration on raised face,
ensure flange gasket ID is matched with port ID
as shown in Figure 5.
Yoke with bevel gear actuator and
manual handwheel
MANUAL HANDWHEEL ACTUATION
Figure 9
Yoke with manual handwheel
5
Page 6
KEYSTONE KNIFE GATE VALVE
FIGURE OS1700
OPERATIONAL CONSIDERATIONS
1. All valves should be operated within their
design pressure and temperature ranges.
Under no circumstances should the valves
be operated at conditions outside these
parameters.
2. The operator should have an understanding
of the effects of opening/closing the valve
with regards to its role in the overall piping
system. Take caution to ensure that the
valve is in good operating condition prior to
operating it under pressure.
3. Care should be taken when processes
contain hazardous and/or otherwise
unstable media to ensure the operator is
aware of the specific health and safety risks
associated with that medium.
4. Stand clear of any moving parts such as the
stem and/or gate assembly, beware of pinch
points, use of gloves is suggested when
operating manual valves to minimize the
risk of injury.
5. All manual handwheel operated valves
are designed for hand input. Do not apply
excessive input torque via pipe wrenches,
'cheater bars', or other devices. If a manual
handwheel actuated valve is difficult to
operate due to torque requirements, it is
recommended that the valve be supplied
with or converted to a bevel gear, air/
hydraulic cylinder or electric motor
actuator.
6. Electric motor actuated valves should be
left in their factory set condition unless
the system operating parameters dictate
a change. If changes are necessary, they
should be performed in small increments
using the lightest/lowest setting possible
to achieve the desired performance and
then the valve/actuator function inspected.
Excess torque and/or thrust in the motor
settings may damage or lockup the valve.
7. The OS1700 valve is position seated and
should never be torque seated. Do not use
the motor torque settings to seat the valve.
8. Care should be taken to ensure that
electrical motors are wired correctly.
Incorrect phasing of 3-phase wiring may
cause valve/motor damage.
LOCKOUT DESIGN
Options
1. Cable lockout standard for manual hand
wheel.
2. Bevel gear lockout is standard for use on
BG actuators.
3. Lockout pin on both open and closed
positions standard on hydraulic cylinder and
pneumatic cylinder actuators
4. Lockout pin style for open and closed
positions are optional for MH valves.
5. Energy lockouts for hydraulic cylinder
actuators.
Figure 10
Lockout design for bevel gearbox
Figure 11
Lockout design for OS1700-18
Safety
1.
Pin-style lockouts will assume potential
energy of actuator has been removed through
other means and will be designed to prevent
gate movement caused by line pressure.
They are not designed to overcome or resist
an energized hydraulic cylinder actuator.
2. Pin-style lockouts positions will be designed
to resist unauthorized manual unassisted
operation of the valve and prevent gate
movement caused by line pressure.
3. Pin style lockouts not available on BG
actuated valves.
Figure 13
Lockout design for OS1700-28
Figure 14
Lockout design for OS1700-3
NOTE
Lockout design may vary between sizes. All lockouts
(except BG) include a pin to secure lockout in position
and lanyard to tie lockout pin to valve body.
Figure 12
Lockout design for OS1700-8
NOTE
Lockout pin may differ from illustration
6
Page 7
KEYSTONE KNIFE GATE VALVE
FIGURE OS1700
GENERAL MAINTENANCE
Emerson recommends that all Keystone
OS1700 series valves be inspected every 60
days.
The following points should be examined and
corrected as required:
1. Cylinder rods, rod boots: Look for excessive
corrosion, media or material build-up, tears
in rod boot, etc. Check rod boot connections
and for cylinder rod seal blow-by.
2. Packing gland: Check for leaks or worn
packing. If leakage is occurring around the
packing gland, tighten the packing gland
bolts evenly at all points, being careful not to
overstress the bolting. (On some valves this
will require two wrenches, one to tighten
the nut and the other to hold the packing
bolt from turning.) If the valve requires
repacking, see additional instructions for
repacking below.
3. Resilient seats: Examine seat for cracks,
cuts, corrosion, erosion or swelling.
Evidence of any above defects may justify
Packing gland
Packing
17.4PH
Cast body
Figure 15
Major components
replacement if seat has recorded evidence
of leaking when closed, or condition is
considered to be at risk of pending failure.
To replace a seat, disassembly of valve is
required.
Gate support
HNBR seat
4. If possible stroke the valve through the full
open and closed position to make sure it is
functioning properly.
REPACKING INSTRUCTIONS
1. Each packing piece is cut a bit longer to add
some compression within each layer and to
accommodate for fraying strands of packing
at each end. The size, length, and quantity
of each piece can be found in the relevant
Table. Each layer shall alternate, as shown
in Figure 16.
2. Method of installing packing is shown in
Figure 17. Place one end of packing along
face of gate and within the range, as shown
in Figure 18. The other end should touch
initial packing piece once installation of
packing commences.
3. Start at the hump of each packing piece
and pack the packing with a packing tool, as
shown in Figure 18. Packing with a packing
tool is required to fill in any gaps that can or
cannot be seen. Each layer will require this
step.
NOTE
Do not let packing material to twist during installation.
4. Each layer of packing should be stacked in
a specific way so that a layer of packing is
sitting on top of a split line from the previous
layer, as shown in Figure 19.
5. Install packing gland with studs, Bellville
Washers, flat washers and nuts as
shown in Figure 20. Purpose of Belleville
washers are to act as a lock washer
for nut. For initial tightening of packing
gland, tighten packing gland to achieve a
compression between 0.125-0.375”. Use
Loctite 262 (Red) on studs to secure in body.
6. Tension must be placed on nut to prevent
nut from backing out. First stack starts
on bottom, cupped up on flat washer and
alternates, as shown in Figure 21.
NOTE
Ensure each stack is facing the opposite direction and
the final stack is cupped downward before adding the
nut.
Figure 16
Installation of packing (OS1700-24 Shown)
NOTES
1. Stop all small leaks as soon as possible as
considerable damage can be done to the valve
and the surrounding area if leakage is allowed to
continue.
2. Replacement parts including replacement liners,
hand wheel and yoke assemblies, gates, packing
glands, and packing can be provided from our
factory. If valve requires further repair, please
contact our office for an estimate of feasibility and
cost of repair.
3. Use packing tool for packing, starting at the hump
of each piece of packing
Figure 17
Installation of packing (OS1700-24 Shown)
7
Page 8
KEYSTONE KNIFE GATE VALVE
FIGURE OS1700
25% of the
gate width
Range to keep split
line of packing
Figure 18
Installation of packing (OS1700-24 Shown)
Figure 19
Packing layers alternating (OS1700-24 Shown)
OPTIONAL LIVE-LOADED GLAND
Install packing gland with studs, Belleville
washers, and nuts, as shown in Figure 21.
Belleville washers are stacked in a specific
order to achieve live loading. First stack starts
on gland.
Figure 21
Stacking of Belleville washers for optional
live-loading (OS1700-12 Shown)
Figure 20
Stacking of Belleville washers to act as
lockwashers (OS1700-20 Shown)
BELLEVILLE WASHER STACKING PATTERN FOR OPTIONAL LIVE-LOADING
Valve size
NPS (DN)
2 (50)2 Down2 Up2 Down1 Up1 Down1 Up1 Down
3 (80)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
4 (100)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
6 (150)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
8 (200)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
10 (250)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
12 (300)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
14 (350)2 Down2 Up2 Down1 Up1 Down1 Up1 Down
16 (400)2 Down2 Up2 Down1 Up1 Down1 Up1 Down
18 (450)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
20 (500)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
24 (600)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
26 (650)2 Down2 Up2 Down1 Up1 Down1 Up1 Down
28 (700)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
30 (750)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
32 (800)4 Down4 Up4 Down1 Up1 Down1 Up1 Down
36 (900)3 Down3 Up3 Down1 Up1 Down1 Up1 Down
CYLINDER SUPPORT METHODS FOR
HORIZONTALLY OR OFF-VERTICAL MOUNTING
Cylinders may require additional support when
mounted in the other than vertical position.
Failure to do so could lead to premature
failure of cylinder and/or valve.
The following illustrations are suggestions;
specific details will have to be determined by
customer so support best suits surrounding
area. It is important that the cylinder/
gate alignment be maintained during valve
operation. Supports should be designed
to maintain alignment and support bulk of
cylinder weight.
RECOMMENDED LONG TERM STORAGE
The following are recommendations for
storage procedures to retain maximum product
integrity during long term storage of 1 to 5
years.
Storage facility
The preferred storage location is a clean, dry
protected warehouse. If valves are to be stored
outside, precautions should be taken to keep
valves clean and dry. Standard packaging
materials cannot be considered sufficient for
outdoor storage.
HANDWHEEL OR BEVEL GEAR OPERATED
VALVES
Equipment orientation
Valves may be stored in the vertical or
horizontal position
Preparation for storage
Valves may be stored as shipped, provided
the storage facility and equipment orientation
instructions above are followed. If valve
packaging is altered or removed for receiving
inspection, repackage valve as originally
received. Standard packaging materials cannot
be considered sufficient for outdoor storage.
INSTALLATION AINSTALLATION B
Appropriate tie-in capable of supporting load
Turnbuckle for adjustment saddle style hanger
Saddle style support
Appropriate tie-in capable of supporting load
INSTALLATION C
Appropriate tie-in capable of supporting load
Turnbuckle for adjustment
Appropriate head-support,
saddle style perferred
9
Page 10
KEYSTONE KNIFE GATE VALVE
FIGURE OS1700
Storage inspection
Visual inspection shall be performed on a semiannual basis and results recorded. Inspection
as a minimum shall include reviewing the
following:
- Packaging
- Flange covers
- Dryness
- Cleanliness
Maintenance
Maintenance shall consist of correcting
deficiencies noted during inspection. All
maintenance shall be recorded. Contact factory
prior to performing any maintenance if valve is
still covered under warranty.
CYLINDER OPERATED VALVES
Equipment orientation
The preferred orientation for optimum
protection is with the cylinder in the vertical
position. This position gives the best support to
the cylinder rod and helps reduces the chance
of a “flat spot” developing on the cylinder seals.
An acceptable alternate position for valves
with cylinder diameters of less than 6 inches
(150 mm) is with the cylinder in the horizontal
position.
Preparation for storage
Valves may be stored as shipped, provided
the storage facility and equipment orientation
instructions above are followed. If valve
packaging is altered or removed for receiving
inspection, repackage valve as originally
received. Standard packaging materials cannot
be considered sufficient for outdoor storage
Cylinder storage
These cylinder storage instructions are not
intended to replace the instructions of the
specific cylinder manufacturer and are to be
used as a guide only. If specific instructions are
required, please contact our office. For storage
of up to 3 years; Squirt a high quality grade
of hydraulic oil or synthetic lubricant into the
cylinder ports and operate cylinder 6-12 times
on a yearly basis. For storage 3-5
years; Lubricate as above. Additionally, extend
cylinder rod until the valve is fully closed. Coat
cylinder rod with high quality heavy grease or
synthetic lubricant. Retract cylinder rod until
valve is fully open, drawing lubricant into rod
end of cylinder. Securely plug cylinder ports
with pipe plugs, if cylinder is not prepiped to
control accessories. If cylinder is prepiped to
accessories, plug all input and output ports of
accessories.
Storage inspection
Visual inspection shall be performed on a
semi-annual basis and results recorded.
Inspection as a minimum shall include
reviewing the following:
- Packaging
- Flange covers
- Dryness
- Cleanliness
Maintenance
Maintenance shall consist of correcting
deficiencies noted during inspection.
All maintenance shall be recorded.
Contact factory prior to performing any
maintenance if valve is still covered under
warranty.
10
Page 11
Page 12
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Keystone is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed
as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and
conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
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