Tuthill KVA Series User manual

KINNEY®
Single Stage Rotary Vane Pumps
KVA Series
Models
KVA12 KVA40 KVA160 KVA630
KVA21 KVA63 KVA250
KVA25 KVA100 KVA400
OPERATOR’S MANUAL
Manual 1865 Rev B p/n 001865 0000
Tuthill Vacuum & Blower Systems tuthillvacuumblower.com 800.825.6937
WARNING: Do Not Operate Before Reading Manual
Operator’s Manual: Tuthill KVA Series Single Stage Rotary Vane Pumps
Copyright © 2018 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and specications subject to change.

Disclaimer Statement:
All information, illustrations and specications in this manual are based on the latest information available at
the time of publishing. The illustrations used in this manual are intended as representative reference views only.
Products are under a continuous improvement policy. Thus, information, illustrations and/or specications to
explain and or exemplify a product, service or maintenance improvement may be changed at any time without
notice.
Rights Reserved Statement:
No part of this publication may be reproduced or used in any form by any means - graphic, electronic or me-
chanical, including photocopying, recording, taping or information storage and retrieval systems - without the
written permission of Tuthill Vacuum & Blower Systems.
Copyright © 2018 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and specications subject to change.
The employees of Tuthill Vacuum & Blower Systems thank you for your purchase!
Tuthill Vacuum & Blower Systems proudly manufactures
Kinney®vacuum pumps and M-D PneumaticsTM blowers and
vacuum boosters in Springeld, Missouri, USA. We bring
100+ years of engineering experience and solid, hands-
on care to help customers keep their processes running.
Your satisfaction is important to us so please take time to
provide your Tuthill sales representative with performance
feedback. We love to hear from our customers!
Tuthill is a family owned business that was started by James
B. Tuthill in 1892. At that time, Tuthill manufactured com-
mon brick to Chicago construction companies who were
fueling the city’s rapid expansion. Fast forward to today
and Tuthill now serves sustaining, global markets like agri-
culture, chemical, construction, energy, food and beverage,
pharmaceuticals and medical, transportation, and utilities.
While the company has changed in what it manufactures,
one thing remains throughout every Tuthill line of business
– we are a company with HEART. Our slogan is “Pump Your
Heart Into It” and everyday our employees do just that as
they represent the Tuthill brand and dare to make better.
Thank you for making Tuthill Vacuum & Blower Systems
part of your company’s process! FIND OUT MORE AT
TUTHILL.COM
A company with heart
right from the start.

i
Manual 1865 Rev B p/n 001865 0000
Table of Contents
Introduction .................................................................................. 1
Safety ............................................................................................ 2
Graphic Conventions Used in this Manual............................................ 2
Safety Instruction Tag ........................................................................... 2
Safety Precautions for Vane Pumps...................................................... 2
Installation .................................................................................... 4
Unpacking............................................................................................. 4
Location ................................................................................................ 4
Power Requirements............................................................................. 4
Vacuum Connections ............................................................................ 5
Filling the Pump With Oil ....................................................................... 5
Operation ...................................................................................... 6
Start-Up................................................................................................. 6
Stopping the Pump ............................................................................... 6
Gas Ballast............................................................................................ 6
Maintenance ................................................................................. 7
Inline (Inlet) Filter................................................................................... 7
Oil Level ................................................................................................ 7
Oil Type and Quantity ........................................................................... 7
Oil Change ............................................................................................ 7
Oil Spin-On Filter................................................................................... 8
Exhaust Filter......................................................................................... 8

ii
Table of Contents
Manual 1865 Rev B p/n 001865 0000
Overhaul Kit and Accessories............................................................... 8
Maintenance Schedule ......................................................................... 8
Specications............................................................................... 9
Troubleshooting......................................................................... 10
Exploded Views and Parts Lists............................................... 13
KVA12 / KVA21 Exploded View Drawing ............................................ 14
KVA12 / KVA21 Parts List.................................................................... 15
KVA25 / KVA40 Exploded View Drawing ............................................ 16
KVA25 / KVA40 Parts List.................................................................... 17
KVA63 / KVA100 Exploded View Drawing .......................................... 18
KVA63 / KVA100 Parts List.................................................................. 19
KVA160 Exploded View Drawing ........................................................ 20
KVA160 Parts List ............................................................................... 21
KVA250 Exploded View Drawing ........................................................ 22
KVA250 Parts List ............................................................................... 23
KVA400 Exploded View Drawing ........................................................ 24
KVA400 Parts List ............................................................................... 25
KVA630 Exploded View Drawing ........................................................ 26
KVA630 Parts List ............................................................................... 27
Warranty – Vacuum Products ................................................... 27
Operating Data Form / Product Registration........................... 28

1
Manual 1865 Rev B p/n 001865 0000
CONGRATULATIONS on your purchase of a new
KINNEY®KVA oil lubricated, rotary vane vacuum
pump from Tuthill Vacuum & Blower Systems.
Please examine the pump for shipping damage,
and if any damage is found, report it immediately to
the carrier. If the pump is to be installed at a later
date, make sure it is stored in a clean, dry location
and rotated regularly. Make sure covers are kept
on all openings. If the pump is stored outdoors, be
sure to protect it from weather and corrosion.
KINNEY KVA vacuum pumps are built to exacting
standards and, if properly installed and maintained,
will provide many years of reliable service. Read
and follow every step of these instructions when
installing and maintaining the pump.
This manual covers KVA model vacuum pumps.
Please identify the model number and serial
number when ordering parts.
WARNING
!
Serious injury can result from operating or
repairing this machine without rst reading the
service manual and taking adequate safety
precautions.
OTE:NRecord the model and serial numbers of
the pump in the OPERATING DATA form
on the inside back cover of this manual.
Use this identication on any replacement
part orders, or if service or application
assistance is required.
INTRODUCTION
01

2
Manual 1865 Rev B p/n 001865 0000
GRAPHIC CONVENTIONS USED IN
THIS MANUAL
The following hazard levels are referenced within
this manual:
DANGER
!
Indicates a hazardous situation that, if not
avoided, will result in death or serious injury.
WARNING
!
Indicates a hazardous situation that, if not
avoided, could result in death or serious
injury.
CAUTION
!
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
injury.
Indicates a situation that can cause damage
to the engine, personal property, and/or
the environment or cause the equipment to
operate improperly.
OTE:NIndicates a procedure, practice, or
condition that should be followed in
order for the equipment to function in the
manner intended.
SAFETY INSTRUCTION TAG
CAUTION
!
Do not valve or restrict pump discharge
opening.
Use oil mist eliminator when operating pump,
ensure adequate ventilation when discharging
indoors.
Refer to manual safety instructions.
SAFETY PRECAUTIONS FOR VANE
PUMPS
Please read the following safety information before
operating the vacuum pump.
• Do not operate the pump without the guards
properly attached. Disconnect the pump motor
from the electrical supply at the main disconnect
before removing the guards. Replace the belt
guard before reconnecting the power supply to
the pump motor. Operating the pump without the
belt guard properly installed exposes personnel
in the vicinity of the pump to risk from rotating
drive components.
SAFETY
02

3
02
Safety
Manual 1865 Rev B p/n 001865 0000
• Do not operate the pump with oxygen-enriched
gas (greater than 21% by volume) in the suction
line, unless the pump has been prepared with
an inert uid suitable for the application and
equipped with seal and start/stop purge system.
WARNING
!
Pumping oxygen-enriched gases with mineral
oil or other non-inert uids and without
proper purges can cause re or explosion
in the pump, resulting in damage or serious
bodily injury.
• Take precautions to avoid prolonged or
excessive exposure to oil mist or process
materials emanating from the discharge of the
pump.
• Do not allow the pump to discharge into a
closed or inadequately ventilated room. Where
process vapor contains environmentally
unfriendly chemical vapor, pump discharge must
be connected to the properly sized scrubber
system to neutralize the harmful chemicals
prior to the discharge to the atmosphere. Laws
and ordinances may pertain to your local area
regarding discharge of oil mist, oil vapor, or
chemical vapor to atmosphere. Check local laws
and ordinances before operating the pump with
discharge to outside atmosphere.
• Do not restrict the pump discharge in any way or
place valves in the discharge line. The vacuum
pump is a compressor and will generate high
pressures without stalling the motor when
operated at low suction pressures. Excessive
pressure could cause damage or serious bodily
injury.
• Disconnect the pump motor from the electrical
supply at the main disconnect before
disassembling or servicing the pump. Make
sure that the pump is completely reassembled,
the guards are properly installed, and all ll and
drain valves are installed and closed before
reconnecting the power supply. Accidental start-
up or operation of the pump while maintenance
is in progress could cause damage or serious
bodily injury.
• Lift the pump only by the lifting lugs supplied
with the pump. Never lift equipment attached to
the pump by the pump lifting lugs.
• Do not touch hot surfaces on the pump. In
normal operation at low pressures, surface
temperatures will not normally exceed 180°F
(82°C). Prolonged operation at 200 Torr (267
mbar) may cause surface temperatures as high
as 220°F (104°C).

4
Manual 1865 Rev B p/n 001865 0000
UNPACKING
Inspect the box and pump carefully for any signs
of damage incurred in transit. Since all pumps
are ordinarily shipped F.O.B. from our factory or
regional warehouse, such damage is normally the
responsibility of the carrier and should be reported
to them.
The vacuum pump is bolted to the skid. To free the
pump, remove the fasteners.
The inlet and exhaust of the pump are covered
with plastic caps to prevent dirt and other foreign
substances from entering the pump. Leave these
caps in place until you are ready to pipe the pump
to your equipment.
LOCATION
Install the pump in a horizontal position on a level
surface so that the pump is evenly supported on
its rubber feet. Leave 12 – 18 in. (30 – 46 cm) of
access around the pump to allow proper cooling.
Provide adequate ventilation for the fans, radiator,
and motor.
Allow easy access to the oil sight glass for
inspection of the oil level, and allow easy access to
the exhaust port for lter changes. Do not tip over
the pump if it is lled with oil.
POWER REQUIREMENTS
A schematic diagram for the electrical motor
terminal connections is located in the junction box
of the motor or on the motor nameplate.
Connect the motor according to the electrical
codes through a fused switch in order to protect
the motor against electrical or mechanical overload
conditions. Set the overload of the motor starter at
a level equal to the full load motor current listed on
the motor nameplate.
If the pump is supplied with a motor starter, it
is preset at the factory according to customer
specications. Check that these settings are in line
with the voltage at your location. If the voltage is
different, please contact Tuthill Vacuum & Blower
Systems for motor and starter information.
Correct direction of rotation is marked by an arrow
on the motor fan housing and is counterclockwise
when looking at the motor from the motor’s fan
side.
OTE:NAfter electrical connections have been
made but before oil has been added,
check the rotation of the motor. If rotation
is backward, reverse any two leads of the
three at the power connection.
INSTALLATION
03

5
03
Installation
Manual 1865 Rev B p/n 001865 0000
VACUUM CONNECTIONS
Use a pipe size that is at least equal to the size of
the pump inlet connections. Smaller lines result in
a reduced pump capacity and performance.
For pumps operating in parallel on a common main
line, install a manual or automatic operated shut-off
valve or a positive action check valve in the suction
line adjacent to the pump suction ange. Do not
use the built-in anti-suckback valve as a shut-off
valve for the vacuum system.
Remove the plastic protective cap from the inlet
port before connecting the pump to the system.
Should process gas contain dust or other foreign
particles, connect a suitable inline (inlet) lter to
the inlet port. Consult Tuthill Vacuum & Blower
Systems for recommendations.
Design the vacuum piping so that no liquids such
as condensate or liquid carried over from the
process can reach the pump. If this possibility
exists, install a knock-out liquid separator.
Consult Tuthill Vacuum & Blower Systems for
recommendations.
If an exhaust manifold is connected, install a drip
leg and drain near the pump exhaust to prevent
exhaust condensation from entering the exhaust
box. The thread sizes in Table 3-1 are standard on
KVA pumps:
Table 3-1
PUMP MODEL INLET SIZE EXHAUST
SIZE
KVA12 / KVA21 1/2 in. NPT Open Grid
KVA25 / KVA40 1-1/4 in. NPT 1-1/4 in. NPT
KVA63 / KVA100 1-1/4 in. NPT 1-1/4 in. NPT
KVA160 / KVA250 2 in. NPT 2 in. NPT
KVA400 3 in. NPT 3 in. NPT
KVA630 3 in. NPT 3 in. NPT
FILLING THE PUMP WITH OIL
The pump is shipped without oil. After level
installation and correct rotation has been
established, ll the pump with the recommended
motor oil through the oil ll port. The oil level
should be at the 3/4 mark on the oil sight glass.
Use a non-detergent oil. Oil detergent additives
can clog exhaust lters and shorten their
service life. Tuthill Vacuum & Blower Systems
recommends KV-100 oil for normal duty operation
or S500 oil for severe duty operation.
Table 3-2 gives the approximate quantities of oil
required for each model.
Table 3-2
PUMP MODEL OIL CAPACITY
KVA12 / KVA21 0.5 qt (0.5 L)
KVA25 / KVA40 1.5 qt (1.4 L)
KVA63 / KVA100 2.6 / 2.9 qt (2.5 / 2.7 L)
KVA160 / KVA250 7.4 qt (7.0 L)
KVA400 20.0 qt (19.0 L)
KVA630 20.0 qt (19.0 L)
WARNING
!
Do not add or ll oil with pump running or
through the inlet or exhaust ports! Do not
overll.

6
Manual 1865 Rev B p/n 001865 0000
START-UP
Check rotation of the motor as described in Power
Requirements on page 4. Fill the pump with
oil as described in Filling the Pump With Oil on
page 5.
Start the pump with the inlet closed. Run the pump
for a few minutes and then shut it down. Check
the oil level again and make sure the oil level is
between the 3/4 mark and the FULL mark on the
upper oil sight glass.
Add oil, if necessary. Add pump oil only when the
pump is off and circulating oil has sufcient time to
return to the oil sump.
STOPPING THE PUMP
To stop the pump, turn off the power. A built-in anti-
suckback valve will prevent oil in the oil reservoir
from being sucked back into the cylinder after the
pump is shut down. Do not use the anti-suckback
valve as a check valve. Consult Tuthill Vacuum &
Blower Systems for proper check valves.
GAS BALLAST
KVA pumps are equipped with a gas ballast. The
gas ballast valve is located between the inlet port
and the exhaust box. Its main function is to prevent
water vapor from condensing in the pump, which
causes emulsication of the oil that can result in
pump failure.
In applications when the quantity of water vapor
is moderate, Tuthill Vacuum & Blower Systems
recommends running the pump for 10 minutes to
its normal operating temperature prior to going on
process. Also operate the pump off process for
10 minutes prior to shutdown. A slight air bleed
(purge) is recommended during these 10-minute
cycles to prevent the vapor from condensing in the
pump.
OPERATION
04

7
Manual 1865 Rev B p/n 001865 0000
KVA Series vacuum pumps require very little
maintenance. To ensure optimum performance,
perform the following maintenance procedures.
INLINE (INLET) FILTER
Check the inline (inlet) lter on a weekly basis.
Clean or replace the lter cartridge when it is dirty.
Consult Tuthill Vacuum & Blower Systems for
replacement element information.
CAUTION
!
Depending on the mounting position of the
lter, be careful not to allow accumulated
foreign material to fall in the pump suction inlet
when removing the lter cartridge. Horizontal
lter installation is recommended to prevent
this.
OIL LEVEL
Under normal circumstances, adding oil between
oil changes should not be necessary. A signicant
drop in oil level means there is either an oil leak, a
defective exhaust lter or O-ring, or a leaking anti-
suckback valve.
If the pump is smoking excessively, the exhaust
lter may be installed improperly.
It is normal for the oil to be foamy or lightly colored
in an operating pump. This may be normal aeration
of the oil. If the oil appears milky or dark colored, it
is contaminated or burned and must be changed.
Check the oil level only when the pump is shut off.
Replenish oil if it drops below the 1/4 mark of the
top sight glass. Add oil through the oil ll port only.
CAUTION
!
Do not add oil while the pump is running, since
hot oil can escape from the oil ll port.
OIL TYPE AND QUANTITY
See “Filling the Pump With Oil” on page 5
for details on oil type and quantity.
OIL CHANGE
Oil change frequency depends on the application
and ambient temperature. Tuthill Vacuum & Blower
Systems recommends that the customer monitor
the condition of the oil. When using KV-100 oil,
Tuthill Vacuum & Blower Systems recommends
changing the oil every 500 – 750 operating hours.
When using S500 oil, Tuthill Vacuum & Blower
Systems recommends changing the oil every 750 –
1,000 operating hours.
MAINTENANCE
05

8
05
Maintenance
Manual 1865 Rev B p/n 001865 0000
OIL SPIN-ON FILTER
Replace the spin-on lter at every oil change.
Please consult Tuthill Vacuum & Blower Systems’
authorized representative for part numbers.
EXHAUST FILTER
Replace the exhaust lters every 9 to 18 months
of operation or as necessary. The service life of
the exhaust lters varies depending upon the
application and frequency of oil change. It is
necessary to change the exhaust lters only when
they become clogged. Indications of clogged
exhaust lters are smoke or oil mist coming from
the exhaust of the pump, a higher than normal
motor current, and an exhaust pressure gauge
reading of 3 psig (21 kPa) or greater.
Do not clean or re-use exhaust lters. Dispose
of the exhaust lters properly as they might
contain toxic substances carried over from the
process. Replace the O-rings on the exhaust
lter when changing it.
Please consult Tuthill Vacuum & Blower Systems’
authorized representative for part numbers.
OVERHAUL KIT AND ACCESSORIES
An overhaul kit contains a set of gaskets, O-rings,
vanes, bearing, bearing sleeves, shaft seals,
and taper pins. Please consult Tuthill Vacuum &
Blower Systems’ authorized representative for part
numbers.
MAINTENANCE SCHEDULE
The operating life of the pump is greatly affected
by the oil quality and lter condition. Periodic
maintenance will ensure a reliably operating
vacuum pump.
Daily: Visually check oil level and color.
Weekly: Inspect inline (inlet) lter.
Monthly: Check the exhaust lter’s function.
Every 2 – 6 months: Drain and discard oil from
pump while hot. Rell with fresh oil.
Every 9 – 18 months: Replace exhaust lter
elements and O-ring.
Every 500 – 2,000 Operating hours: Change the
oil and oil lter. In models equipped with the oat
valve with a return line, check the oat valve’s
operating conditions.
See the motor manufacturer’s manual for the
periodic motor maintenance.

9
Manual 1865 Rev B p/n 001865 0000
KVA12 KVA21 KVA25 KVA40 KVA63 KVA100 KVA160 KVA250 KVA400 KVA630
NOMINAL
DISPLACEMENT
60 HZ
CFM
7 14 21 28 45 71 124 177 300 460
50 HZ 6 12 18 24 38 60 103 147 247 388
60 HZ
m3/h
12 24 36 48 78 120 210 300 505 780
50 HZ 10 20 30 40 65 100 175 250 420 660
ULTIMATE
PRESSURE
Torr 1.50 1.50 0.12 0.12 0.11 0.11 0.11 0.23 0.07 0.08
mbar 2.0 2.0 0.16 0.16 0.14 0.14 0.15 0.30 0.09 0.11
MOTOR 3 Phase Hp 0.75 1.0 1.5 2 3 5 7.5 10 15 25
ROTATIONAL SPEED 60 Hz 1740 3480 1740 1740 1740 1740 1740 1740 1160 1160
NOISE LEVEL dba 60 Hz 59 62 67 67 68 68 77 77 78 79
OIL CAPACITY Quarts 0.5 0.5 1.5 1.5 2.6 2.9 7.4 7.4 20 20
Liters 0.5 0.5 1.4 1.4 2.5 2.7 7 7 19 19
CONNECTIONS Inlet NPT 1/2" 1/2" 1 1/4" 1 1/4" 1 1/4" 1 1/4" 2" 2" 3" 3"
Outlet NPT 1 1/4" 1 1/4" 1 1/4" 1 1/4" 1 1/4" 1 1/4" 2" 2" 3" 3"
APPROX. WEIGHT
(w/pump & motor;
no oil)
lbs 44 44 104 117 146 165 362 406 1,111 1,550
kg 20 20 47 53 66 75 164 184 504 703
06
SPECIFICATIONS

10
Manual 1865 Rev B p/n 001865 0000
Although Tuthill Vacuum & Blower Systems blowers are well designed and manufactured, problems may occur
due to normal wear and the need for readjustment. The following chart lists symptoms that may occur along
with probable causes and remedies.
SYMPTOM PROBABLE CAUSE REMEDIES
Pump smokes at the
exhaust side or expels
oil droplets from the
exhaust.
Exhaust lters are not
properly installed with
O-ring. Check exhaust lter placement and replace if needed.
Filter media is
damaged.
Exhaust lters are
clogged with foreign
particles.
Replace lter and O-ring.
Oil is not recirculating
properly. Check oil quality and make certain oil lines are clean.
Pump is running too
hot. (Typical operating
temperature of KVA
pumps is
120° – 200°F
[49° – 93°C].)
Not enough oil in the
oil reservoir or oil
is badly burned or
carbonized
Drain oil and rell with the proper oil. Change oil more
frequently.
Not enough air
ventilation to pump
Clean radiator and motor ns. Make certain a sufcient
amount of fresh air is supplied to the pump.
Pump will not operate
(seized up).
Pump operated without
oil and vanes broke
Call Tuthill Vacuum & Blower Systems for service and
repair.
Liquid carry over into
pump cylinder broke
vanes while pump was
running
Install knock-out pot at inlet of pump.
TROUBLESHOOTING
07

11
07
Troubleshooting
Manual 1865 Rev B p/n 001865 0000
SYMPTOM PROBABLE CAUSE REMEDIES
Pump does not reach
end pressure. This is
the lower absolute (best
vacuum) when running
with the inlet closed.
Oil condition is most
often the cause of not
reaching end vacuum.
Drain oil from pump and rell with fresh oil. Run pump
with fresh oil for 15 minutes, and then take a new
pressure reading.
Inlet screen clogged
with debris Clean screen and check inlet lter element.
Shaft seal leak Replace shaft seal, from overhaul kit, or call Tuthill
Vacuum & Blower Systems for service and repair.
Vane stuck in rotor slot
Drain oil with ushing oil. Run pump for 15 minutes and
drain. Replace uid with fresh oil, exhaust lter, and
spin-on lter.
Replace vane.
Call Tuthill Vacuum & Blower Systems for service and
repair.
Anti-suckback valve
stuck in closed
position due to oil
contamination
Disassemble valve and screen, and clean as required.
Drain old oil and replace with fresh oil.
No oil or low oil level in
reservoir
Shut down pump, drain balance of oil, and rell with
fresh oil.
Vacuum tting or hose
is not leak-tight. Check hose and pipe connections for leaks.
Radial clearance
between rotor and
cylinder is no longer
adequate.
Overhaul pump, or call Tuthill Vacuum & Blower
Systems for service and repair.
Pump operation is very
noisy.
Coupling insert is worn. Replace coupling insert in motor/pump coupling.
Vanes stuck Replace vane, or call Tuthill Vacuum & Blower Systems
for service and repair.
Bearing noise Replace bearings, or call Tuthill Vacuum & Blower
Systems for service and repair.

12
07
Troubleshooting
Manual 1865 Rev B p/n 001865 0000
SYMPTOM PROBABLE CAUSE REMEDIES
Pump starts, but it
labors and draws high
amperage.
Oil is too viscous. Drain and change with fresh oil.
Exhaust lter is
clogged.
Replace exhaust lters, maintain proper oil condition
and oil level, and use KV-100 oil. Use S500 oil
for severe duty operation. Make sure inlet lter is
operational to prevent particulate carryover.
Loose connection in
motor terminal box
wired for wrong voltage
Check wiring diagram for proper connections, and
tighten or replace loose connections.
Foreign particles in
pump Overhaul pump, or call Tuthill Vacuum & Blower
Systems for service and repair.
Broken vanes or
seized bearings
The pump is overlled
with oil or the wrong
kind of oil is in the
pump.
Drain oil and replace with the correct type and
appropriate amount of oil.
Pump runs in wrong
direction.
Check for correct rotation. If rotation is incorrect, switch
any two leads.
Pump will not start.
Supply voltage is
not proper or is
overloaded. Motor
starter overload
settings are too low
or improper; fuses are
burned; or wire size is
too small or too long,
causing a voltage drop.
Check voltage supply and overload settings in
motor starter for size and settings according to
motor nameplate. Install proper size wire. If ambient
temperature is high, use the next larger size overloads
or adjust settings 5% above motor nameplate valve.
Turn pump fan by hand. If it will not turn, remove motor
from pump and check motor and pump separately.
Repair or replace if needed, or call Tuthill Vacuum &
Blower Systems for service and repair.

13
Manual 1865 Rev B p/n 001865 0000
For your convenience, Tuthill has prepared a
variety of kits to serve all levels of routine and
atypical maintenance of your KVA vane pump.
Pump Module
This is an assembled bare pumping chamber,
including items 1-66 (as applicable); see Exploded
Views and Parts Lists on the following pages for
details.
A pump module is often an economical option to
replacing a pump, which reuses the existing oil-
handling assembly, motor, and accessories, while
replacing the rotating components and pumping
chamber.
Rebuild Kit
This kit includes (as applicable): a full set of vanes,
o-rings, lters, gaskets, bearing, bearing sleeve,
shaft seal, coupling boot, and inlet screen.
Gasket Kit
This kit includes (as applicable): shaft seal, end
plate o-ring, oil ll o-ring, oil drain o-ring, exhaust
lter o-rings, oil sump gasket, service cover gasket,
exhaust cover gasket, exhaust valve seat, cylinder
gasket, check valve plate o-ring, oat valve o-ring.
Filter Kit
This kit includes (as applicable): a full set of
exhaust lters, oil lter, oil ll o-ring, oil drain o-ring,
exhaust lter o-rings, cover gasket, bafe strainer.
Coupling Kit
This kit includes (as applicable): the motor- and
pump-side coupling halves and cooling fan.
Inlet Check Valve Kit
This kit includes (as applicable): inlet screen, inlet
ange, o-rings, check valve spring, check valve
guide, check valve plate.
Vanes
Sold individually, three required per pump; a full set
is included in the Rebuild Kit.
Exhaust Filters
Sold individually, refer to Item 120 in the relevant
Parts List on the following pages for quantities; a
full set is included in the Filter Kit.
Spin-On Oil Filters
Also included in the Filter Kit.
Shaft Seals
Also included in the Rebuild Kit.
08
EXPLODED VIEWS AND PARTS LISTS

14
08
Exploded Views and Parts Lists
Manual 1865 Rev B p/n 001865 0000
KVA12 / KVA21 EXPLODED VIEW DRAWING

15
05
Exploded Views and Parts Lists
Manual 1865 Rev B p/n 001865 0000
KVA12 / KVA21 PARTS LIST
ITEM NO. DESCRIPTION
12
QTY
21
QTY
1 Cylinder 1 1
15 Rotor 1 1
18 Sleeve, Bearing 2 2
22 Vane 3 3
25 A-end Plate 1 1
26 B-end Plate 1 1
30 Bearing 2 2
35 Shaft Seal 1 1
36 O-Ring, Bracket 1 1
37 Bracket 1 1
38 Hexagon Head Screw 3 3
50 O-Ring, End Plate 2 2
53 Hexagon Head Screw 6 6
54 Spring Lock Washer 6 6
60 Taper Pin 4 4
65 Shaft Key 1 1
75 Oil Sump 1 1
83 Oil Sight Glass 1 1
84 Gasket, Oil Sight Glass 1 1
88 Plug, Oil Fill 1 1
89 O-Ring, Oil Fill Plug 1 1
95 Plug, Oil Drain 1 1
96 O-Ring, Oil Drain Plug 1 1
120 Exhaust Filter 1 1
121 O-Ring, Exhaust Filter 1 1
125 Filter Spring 1 1
126 Slotted Cheese Head Screw 1 1
145 Exhaust Cover (w/ Threaded Flange) 1 1
145-1 Rubber Flap for 02145 1 1
145-2 Washer for 02145 1 1
145-3 Slotted Cheese Head Screw for 02145 1 1
150 Gasket, Exhaust Cover 1 1
155 Allen Bolt 4 4
156 Outlet Screen 1 1
159 Exhaust Valve Assembly (159.1~ 159.6) 1 1
159-1 Exhaust Valve Fixed Bolt 1 1
159-2 Exhaust Valve Washer 1 1
159-3 Exhaust Valve Spring 1 1
159-4 Exhaust Valve Plate 1 1
159-5 Exhaust Valve Lock Nut 1 1
159-6 Exhaust Valve Seat Plate 1 1
186 Allen Bolt 4 4
190 Spring Lock Washer 4 4
200 Plug, Drum 1 1
201 O-Ring, Drum Plug 1 1
221 Elbow Hydraulic Fitting 1 1
ITEM NO. DESCRIPTION
12
QTY
21
QTY
222 Elbow Hydraulic Fitting 1 1
223 Straight Hydraulic Fitting 1 1
231 Oil Tube (B) 1 1
233 Elbow Hydraulic Fitting 1 1
240 Cooling Spiral 1 1
251 Check Valve Plate 1 1
252 Check Valve Guide 1 1
253 O-Ring, Check Valve Plate 1 1
254 Check Valve Spring 1 1
255 O-Ring, Inlet Part 1 1
260 Inlet Flange, KVA Type 1 1
260 Inlet Flange, ORL to Inlet Only 1 1
261 Inlet Screen 1 1
262 Retaining Ring for Bores 1 1
265 Hexagon Head Screw 4 4
266 Spring Lock Washer 4 4
285 Oil Recirculating Screw 1 1
286 Banjo Fitting 1 1
285S-1** Sealing Ring for 285** 1 2
285S-2** Sealing Ring for 285** 2 2
290 Oil Return Tube 1 1
291 Elbow Hydraulic Fitting 1 1
295S*** Sealing Ring for 295** 2 2
295 Oil Return Valve 1 1
296 Banjo Fitting 1 1
297 Oil Return Tube 1 1
300 Motor Mounting Bracket 1 1
301 Allen Bolt 3 3
302 Spring Lock Washer 3 3
310 Coupling Set (311 ~313) 1 1
311 Coupling, Pump Side 1 1
312 Coupling, Sleeve 1 1
313 Coupling, Motor Side 1 1
316 Set Screw (Pump Side) 2 2
317 Set Screw (Motor Side) 2 2
400.3 Motor Fan Blade 1 1
400.4 Motor Fan Cover 1 1
401 Hexagon Head Screw 4 4
402 Spring Lock Washer 4 4
416 Slotted Set Screw 1 1
417 Foot Mounting Screw 2 2
419 Sleeve 1 1
421 Rubber Foot 3 3
430 Motor 1 1
431 Directional Arrow Label 1 1
433 Nameplate 1 1

16
08
Exploded Views and Parts Lists
Manual 1865 Rev B p/n 001865 0000
KVA25 / KVA40 EXPLODED VIEW DRAWING