Clarkson Manuals: Model KS1 Severe Service Knife Gate Valve IOM, Clarkson-EN Manuals & Guides

CLARKSON SEVERE SERVICE KNIFE GATE VALVE

MODEL KS1

Installation and maintenance instructions

GENERAL INFORMATION

The KS1 has many features designed to
improve service life and lower cost of
ownership. It is suitable for a wide range of
severe service slurry applications in:

• Mining and mineral processing

• Coal preparation plants

• Pulp and paper plants

• Oil sands processing

• Power

• Steel processing

IMPORTANT FEATURES

• True bi-directional flow and zero leakage
shut-off; can be installed in either direction

• Heavy cross section precision-molded
elastomer seat provides more surface area
for superior isolation

• Field-adjustable patent-pending gate edge
seal and transverse seal prevent leakage
through top of valve

• Enclosed body design prevents any leakage to
the outside environment

• Full round port and seat design offers low
pressure drop across valve and longer service
life in abrasive applications

• Dual replaceable and rotatable integral
Ni-resist wear rings extend service life

• Modular frame design allows for installation
of any standard accessory without
modification

• Fully piggable

• Available in raised or flat face

LABEL CONTENTS

Item Description Example

MAWP Maximum Allowable Working Pressure 2000 kPa
Comply Standard B31.3 & SP135
Manuf. ref. Manufacturer's Reference Unique identifier
CRN Canadian Registration Number TBC
Patent Patent TBC
Size Valve nominal size DN 250
Flange Valve mounting flange standard ASME 150
Body Body material ASTM A439-D2
Gate Gate material 2205 S/S
Temp Maximum working temperature 80°C (NR)

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COMPLIANCE LABEL

VCIOM-16296-EN 21/09

CLARKSON SEVERE SERVICE KNIFE GATE VALVE

MODEL KS1

INITIAL INSPECTION

1. Examine entire valve and report any
damage or discrepancies to supplier prior to
installation.

2. Inspect accessories, if any, including
solenoids, limit switches, positioners, etc.
for functionality prior to installation.

3. Large manual hand wheels may sometimes
be shipped loose in container.

4. Packing screws should be checked
and adjusted to torque stated in IOM as
these could loosen during transport —
overtightening will reduce seal life.

WARNING

Take safety precautions to avoid risk to personnel
from unexpected leakage through packing when
valve is first exposed to pressure.

FLANGE BOLTING AND INSTALLATION INSTRUCTIONS

1. KS1 standard pipe connection is “flanged” where port flange mounting holes are tapped.

2. All flange holes in a valve size are same depth.

3. KS1 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.

WARNING

Incorrect bolt or stud length may damage thin
wall at bottom of flange hole and risk integrity of
pressure boundary.

4. Torque on flange bolt should not exceed values shown in Table 1.

TABLE 1 - MAXIMUM TORQUE ON FLANGE BOLTS OR STUDS

Recommended no.

Valve size Bolt size Torque

NPS DN in ft·lb Nm - in mm - in mm

2 50 ⅝-11 210 280 1 1.50 40 1 2.50 65
3 80 ⅝-11 210 280 3 2.00 50 1 2.75 70
4 100 ⅝-11 210 280 3 2.00 50 1 2.75 75
6 150 ¾-10 340 460 2 2.00 50 1 3.00 75

8 200 ¾-10 340 460 2 2.25 60 1 3.25 80
10 250 ⅞-9 500 680 2 2.25 60 1 3.50 90
12 300 ⅞-9 500 680 1 2.25 60 1 3.50 90
14 350 1-8 750 1020 2 2.50 60 1 3.75 95
16 400 1-8 750 1020 1 2.50 60 1 4.00 100
18 450 1-1/8-8 940 1270 2 2.50 60 1 4.25 110
20 500 1-1/8-8 940 1270 1 3.00 75 1 4.50 115
24 600 1-1/8-8 1150 1550 2 3.25 80 1 5.00 125

of washer for bolt

Recommended

bolt length

Recommended no.
of washer for stud

Recommended

stud length

NOTES

1. Maximum torque (assuming lubricated bolts) should not be exceeded to ensure threaded flange holes in valve body are
not damaged.

2. Recommended bolt length assumes; Gasket thickness = 0.125 in.; F436 Flat washer thickness; Min 6 threads
engagement; Common heavy hex bolt heights.

3. Below diagrams provide details on calculation of flange bolt/stud length.

4. Incorrect bolt or stud length may damage thin wall at bottom of flange hole and risk integrity of pressure boundary.

5. Consult sales for recommended torques for hole sizes other than ASME.

BASIS OF BOLT LENGTH AND STUD LENGTH CALCULATION

Thread

depth

Stud

length

Flange

thickness

Nut weight
(Heavy hex)
As per ANSI/ASME
B18.2.2-1987

Gasket

thickness

Flange

thickness

Gasket
thickness

Washer
thickness
(F436)

Bolt length = Washer thickness + Flange thickness + Flange raised face + Gasket thickness + Valve body recess + 1 x Bolt diameter

Thread

depth

Gasket
thickness

Washer
thickness
(F436)

2

CLARKSON SEVERE SERVICE KNIFE GATE VALVE

MODEL KS1

OPERATIONAL CONSIDERATIONS

WARNING

Valves must be operated within published design
pressure and temperature limits stated on
Emerson Label.

1. An operator should have an understanding
of the effects of opening/closing a valve
within overall piping system and should
ensure a valve is in good operating condition
prior to operating it under pressure.

2. An operator should be aware if media
contains hazardous material and specific
health and safety risks associated with that
medium, as a damaged liner can result in
leakage between body halves.

3. Stand clear of any moving parts such as
stem and/or gate assembly when operating
and use gloves when operating manual
valves to minimize risk of injury.

4. All manual-handwheel-operated valves are
designed for hand input of less than 88 lbs
(40 kg); do not apply excessive input torque
via pipe wrenches, 'cheater bars', or other
devices.

5. If a manual-handwheel-actuated valve
is difficult to operate due to torque
requirements, valve should be serviced.

6. Electric motor actuated valves should be
left in their factory-set condition unless
system operating parameters dictate a
change. In these cases, perform cycling
in small increments using the lightest/
slowest settings possible in order to achieve
desired performance, as excessive torque
may result in unexpectedly high thrust and
damage the valve.

7. KS1 valves are position-seated and should
never be torque-seated; do not use motor
torque settings to seat a 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.

9. ACME thread on stem in manual handwheel
and bevel gearbox actuations should always
be well lubricated with a suitable lubricant
(Shell Gadus S2 OG 85 or equivalent), as
failure to do so may result in damage to
valve or excessive thrust to actuate.

LIFTING LOCATION AND LOCKOUTS

WARNING
Product limitation

Mechanical lockouts on a linear-actuated valve
are designed to prevent gate movement caused
from line pressure or gravity and to provide a
visual indication of gate position.

1. KS1 valves may be supplied with optional
lifting lugs either at yoke connection bolts or
on top of pneumatic cylinder.

2. Mechanical lockout for open/closed is
provided as standard on all valves.

3. Handwheel-style lockouts are also provided
on bevel gearbox valves.

4. Energy lockouts are required for electric,
pneumatic and hydraulic cylinder actuators
to remove energy and avoid damage to
mechanical lockout and valve itself.

Lifting lug on pneumatic actuator

Mechanical lockout
pin and lanyard

Lifting lugs on yoke
connection bolt

3