TLV LA Series User manual

Copyright (C) 2020 by TLV Co., Ltd. All rights reserved.
881 Nagasuna, Noguchi, Kakogawa, Hyogo 675-8511, Japan
Tel: [81]-(0)79-422-1122 Fax: [81]-(0)79-422-0112
INSTRUCTION MANUAL
Keep this manual in a safe place for future reference
THERMOSTATIC AIR VENTS FOR STEAM
LA SERIES
LA13 / LA13L / LA21
LA13 LA21 LA13L
Manufacturer

Before beginning installation or maintenance, please read this manual to ensure correct usage of
the product. Keep the manual in a safe place for future reference.
The LA Series air vents LA13, LA21 and LA13L can be used for steam pipelines and medium
capacity steam-using equipment up to 1.3, or 2.1 MPaG (185, or 300 psig). These models
discharge air and condensate slightly below steam saturation temperature.
1 MPa = 10.197 kg/cG, 1 bar = 0.1 MPa
For products with special specifications or with options not included in this manual, contact TLV
for instructions.
The contents of this manual are subject to change without notice.
Introduction
1. Safety Considerations
• Read this section carefully before use and be sure to follow the instructions.
• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
• The precautions listed in this manual are designed to ensure safety and prevent
equipment damage and personal injury. For situations that may occur as a result of
erroneous handling, three different types of cautionary items are used to indicate the
degree of urgency and the scale of potential damage and danger: DANGER,
WARNING and CAUTION.
• The three types of cautionary items above are very important for safety; be sure to
observe all of them, as they relate to installation, use, maintenance, and repair.
Furthermore, TLV accepts no responsibility for any accidents or damage occurring as
a result of failure to observe these precautions.
Indicates an urgent situation that poses a threat of death or serious injury.
Indicates a DANGER, WARNING or CAUTION item.
Indicates that there is a potential threat of death or serious injury.
CAUTION
WARNING
DANGER
CAUTION Indicates that there is a possibility of injury, or equipment/product
damage.
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions, which may lead to serious accidents. Local regulations may
restrict the use of this product to below the conditions quoted.
Take measures to prevent people from coming into direct contact
with product outlets. Failure to do so may result in burns or other injury
from the discharge of fluids.
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the
product has cooled to room temperature. Disassembling or removing
the product when it is hot or under pressure may lead to discharge of
fluids, causing burns, other injuries or damage.
Continued on next page

A
D
F
I
E
B
H
C
G
B
A
G
D
F
C
E
H
CAUTION
Be sure to use only the recommended components when repairing
the product, and NEVER attempt to modify the product in any way.
Failure to observe these precautions may result in damage to the product
or burns or other injury due to malfunction or the discharge of fluids.
Use only under conditions in which no freeze-up will occur. Freezing
may damage the product, leading to fluid discharge, which may cause
burns or other injury.
Use under conditions in which no water hammer will occur. The
impact of water hammer may damage the product, leading to fluid
discharge, which may cause burns or other injury.
2. Specifications
To avoid malfunctions, product damage, accidents or serious injury,
install properly and DO NOT use this product outside the specification
range. Local regulations may restrict the use of this product to below the
conditions quoted.
CAUTION
Refer to the product nameplate for detailed specifications.
* Maximum allowable pressure (PMA) and maximum allowable temperature (TMA) are
PRESSURE SHELL DESIGN CONDITIONS, NOT OPERATING CONDITIONS.
** "Tag No." is displayed for products with options. This item is omitted from the nameplate
when there are no options.
A Model
B Nominal Diameter
C Maximum Allowable Pressure*
D Maximum Allowable Temperature* TMA
E Maximum Operating Pressure
F Maximum Operating Temperature TMO
G Production Lot No.
H Tag No.**
I X-element Type
2.1 Maximum Operating Temperature
:
:
250
(482)
220
(428)
200
(392)
150
(302)
100
(212)
00.5
(75)
1.0
(150)
1.3
(185)
1.5
(215)
Operating Pressure MPaG (psig)
Temperature °C(°F)
2.02.1
(300)
1 MPaG = 10.197 kg/cm2
235°C (455°F)
Operating Temperature Range
Saturated Steam Curve
LA21
LA13/LA13L

LA13
LA21
LA13L
w
r
i
e
u
t
q
w
r
y
e
u
t
q
y
u
t
o
q
w
i
e
r
3. Configuration
No.
1
2
3
4
5
6
7
8*
9**
Description
Body
Cover
X-element
Valve Seat
Screen
Nameplate
Spring Clip
Cover Gasket
X-element Guide
* LA13, LA13L ** LA13L

Body Body
Body
Screen
Valve seat
Spring Clip
X-element guide
Cover gasket**
Cover gasket**
Screen
Nameplate
Nameplate
X-element
X-element
Cover
Cover
Spring Clip
4. Exploded View
LA13* LA21* LA13L
* Shown upside-down for maintenance.
** LA13, LA13L

Sample Installation
LA13/LA21 LA13L
Steam-using
equipment
Pit Pit
Steam-using
equipment
DO NOT submerge the pipe in water
6. Piping Arrangement
Check to make sure that the pipes connected to the air vent have been installed properly.
1. Has the piping work been done as shown on the sketch below?
2. Is the pipe diameter suitable?
3. Has the air vent been installed with the arrow on the nameplate or body (LA13L) pointing in the
direction of flow?
4. Has sufficient space been secured for maintenance?
1. Before installation, be sure to remove all protective seals.
2. Before installing the product, blow out the inlet piping to remove any piping scraps, dirt and
oil. Close the inlet valve after blowdown.
3. Install the air vent at a point where air tends to collect (essentially a place away from the
steam inlet of the equipment). To increase the effectiveness of air removal also install an air
vent in front of the steam-using equipment.
4. Install the air vent vertically (LA13, LA21) with the arrow on the nameplate or body (LA13L)
pointing in the direction of flow. DO NOT install the air vent upside down.
5. To protect people from hot air or steam from the outlet of the air vent connect a pipe leading
to a pit but do not submerge the pipe in water; this may result in air vent failure if the pipe
sucks up water containing rust and dirt.
6. The use of unions is recommended to facilitate connection and disconnection of the air vent.
5. Proper Installation
• Installation, inspection, maintenance, repairs, disassembly, adjustment
and valve opening/closing should be carried out only by trained
maintenance personnel.
• Take measures to prevent people from coming into direct contact with
product outlets.
• Do not use excessive force when connecting threaded pipes.
• Install for use under conditions in which no freeze-up will occur.
• Install for use under conditions in which no water hammer will occur.
CAUTION

Cover LA13, Size 15 mm ( )
Cover LA13, Size 20, 25 mm ( , 1 )
Cover LA21
Cover LA13L
Valve Seat LA13L
7. Operational Check
Normal: The sound of flow can be heard while air is discharged. When air
discharge finishes, the valve closes along with slight discharge of steam.
Blocked (no discharge): No air is discharged. The air vent is quiet and its surface temperature
is low.
Blowing: Live steam continually blows from the outlet and there is a continuous
metallic sound.
Steam Leakage: Live steam is leaking through the outlet, accompanied by a high-
pitched sound.
A visual inspection can be done to help decide about necessary immediate maintenance or repair
if the air vent is open to atmosphere.
Use diagnostic equipment such as TLV Pocket TrapMan if the air vent does not discharge to
atmosphere.
If drawings or other special documentation were supplied for the product,
any torque given there takes precedence over values shown here.
Gasket
Screen
X-element
Valve seat
Body, Cover
Check for warping or damage (LA13, LA13L only).
Check for clogging or corrosion damage.
Check for rust, scale, oil film, wear or damage.
Check for rust, scale, oil film, wear or damage.
Check inside for rust and scale.
ProcedurePart
Parts Inspection
8. Inspection and Maintenance
• Installation, inspection, maintenance, repairs, disassembly, adjustment
and valve opening/closing should be carried out only by trained
maintenance personnel.
• Before attempting to open the vent, close the inlet isolation valve of the equipment and
wait until the air vent has cooled to room temperature. Failure to do so may result in
burns or injury.
• LA13L can be maintained without being removed from the pipeline, on the condition that
the surrounding pipes are securely supported. If the pipes are not properly supported,
they may be damaged when torque is applied in the loosening or tightening of the cover.
Such damage could result in steam spraying out and causing serious injury.
• If using a vise when dismantling the air vent, screw a nipple or pipe end into the outlet to
prevent deformation of the threaded connection.
• Be sure to use the proper components and NEVER attempt to modify the product.
CAUTION
Operational inspections should be performed at least twice per year, or as called for by trap
operating conditions. Faulty air vents may result in losses due to steam leakage. Follow the
instructions below for disassembly and reassembly when cleaning or repair is necessary.
1 N m 10 kg cm
Tightening Torque and Distance Across Flats
Part Tightening torque
80
80
120
80
35
(59)
(59)
(88)
(59)
(26)
Nm
Distance across flats
27
41
27
32
19
mm (in)(lbf ft)
(1116)
(158)
(1116)
(114)
(34)
2
1
/
4
3
/

Installation of X-element
Figure A Figure B
Spring clip
Slot Slot
X-element
X-element guide
Cover
9. Troubleshooting
If the expected performance is unachievable after installation of the air vent, read chapter 5 and
chapter 6 again and check the following points to take appropriate corrective measures.
No air is
discharged
(blocked) or
discharge is
poor
The X-element is stuck to the valve seat
The valve seat is blocked
Clean parts
Steam is
discharged or
leaks from
the outlet
(blowing)
(steam leakage)
There is rust or scale between the
X-element valve and valve seat
Clean parts
Steam is leaking
from a place other
than the outlet
The X-element is broken Replace with a new X-element
Improper installation Correct the installation
Air vent vibration
Lengthen the inlet piping and fasten it securely
Gasket deterioration or damage Replace with a new gasket
Improper tightening torques were
used
Tighten to the proper torque
The X-element valve and valve seat
are damaged
Replace with a new X-element and/or
cover (LA13L: also the valve seat)
Clean the valve seat, or replace with
a new valve seat (LA13L) or cover
The screen is clogged Clean parts
The air vent operating pressure exceeds
the maximum specified pressure, or
there is insufficient pressure differential
between the air vent inlet and outlet
Compare specifications and actual
operating conditions
Cause Remedy
Problem
Part & No.
Body 1 /
Cover 2
Cover Gasket 8
(LA13, LA13L)
Replace with a new gasket only if worn
or damaged
Spring Clip 7
X-element 3
Valve Seat 4
(LA13L)
X-element Guide 9
(LA13L)
Screen 5
Insert carefully without bending
During Disassembly During Reassembly
Use a wrench to remove
Remove gasket only if worn or
damaged
Use appropriate pliers to remove
Use pliers to grip ball at the tip of
the X-element
Use a wrench to remove
Be careful not to bend
Be careful not to bend
Clean seating surfaces between cover
and body, coat threads (only LA21) with
anti-seize, tighten to the proper torque
Insert securely into the 3 slots on the X-
element guide or cover (figure A)
Insert right side up making sure not to
catch the guide or cover (figure B)
Tighten to the proper torque
Fix with Valve Seat and make sure X-
element can be inserted smoothly
Disassembly/Reassembly (to reassemble, follow procedures in reverse)

10. Express Limited Warranty
Subject to the limitations set forth below, TLV Corporation, a North Carolina corporation (“TLV”)
warrants that products which are sold by it or TLV International, Inc., a Japanese corporation
(“TII”), which products (the “Products”) are designed and manufactured by TLV Co., Ltd., a
Japanese corporation (“TLVJ”), conform to the specifications published by TLV for the
corresponding part numbers (the “Specifications”) and are free from defective workmanship
and materials. With regard to products or components manufactured by unrelated third parties
(the “Components”), TLV provides no warranty other than the warranty from the third party
manufacturer(s).
Duration Of Warranty
This warranty is effective for a period of the earlier of: (i) three (3) years after delivery of Products
to the first end user in the case of sealed SST-Series Products for use in steam pressure service
up to 650 psig; (ii) two (2) years after delivery of Products to the first end user in the case of
PowerTrap®units; or (iii) one (1) year afterdelivery of Products to the first end user in the case of
all other Products. Notwithstanding the foregoing, asserting a claim under this warranty must be
brought by the earlier of one of the foregoing periods, as applicable, or within five (5) years after
the date of delivery to the initial buyer if not sold initially to the first end user.
ANY IMPLIED WARRANTIES NOT NEGATED HEREBY WHICH MAY ARISE BY OPERATION OF
LAW, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE AND ANY EXPRESS WARRANTIES NOT NEGATED HEREBY, ARE
GIVEN SOLELY TO THE INITIAL BUYER AND ARE LIMITED IN DURATION TO ONE (1) YEAR
FROM THE DATE OF SHIPMENT BY TLV.
Exclusive Remedy
THE EXCLUSIVE REMEDY UNDER THIS WARRANTY, UNDER ANY EXPRESS WARRANTY OR
UNDER ANY IMPLIED WARRANTIES NOT NEGATED HEREBY (INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE), IS
REPLACEMENT; PROVIDED: (a) THE CLAIMED DEFECT IS REPORTED TO TLV IN WRITING
WITHIN THE APPLICABLE WARRANTY PERIOD, INCLUDING A DETAILED WRITTEN
DESCRIPTION OF THE CLAIMED DEFECT AND HOW AND WHEN THE CLAIMED DEFECTIVE
PRODUCT WAS USED; AND (b) THE CLAIMED DEFECTIVE PRODUCT AND A COPY OF THE
PURCHASE INVOICE IS RETURNED TO TLV, FREIGHT AND TRANSPORTATION COSTS
PREPAID, UNDER A RETURN MATERIAL AUTHORIZATION AND TRACKING NUMBER ISSUED
BY TLV. ALL LABOR COSTS, SHIPPING COSTS, AND TRANSPORTATION COSTS
ASSOCIATED WITH THE RETURN OR REPLACEMENT OF THE CLAIMED DEFECTIVE
PRODUCT ARE SOLELY THE RESPONSIBILITY OF BUYER OR THE FIRST END USER. TLV
RESERVES THE RIGHT TO INSPECT ON THE FIRST END USER'S SITE ANY PRODUCTS
Exceptions To Warranty
This warranty does not cover defects or failures caused by:
1. improper shipping, installation, use, handling, etc., by other than TLV or service
representatives authorized by TLV; or
2. dirt, scale or rust, etc.; or
3. improper disassembly and reassembly, or inadequate inspection and maintenance by other
than TLV or service representatives authorized by TLV; or
4. disasters or forces of nature; or
5. abuse, abnormal use, accidents or any other cause beyond the control of TLV; or
6. improper storage, maintenance or repair; or
7. operation of the Products not in accordance with instructions issued with the Products or
with accepted industry practices; or
8. use for a purpose or in a manner for which the Products were not intended; or
9. use of the Products in a manner inconsistent with the Specifications; or
10. failure to follow the instructions contained in the TLV Instruction Manual for the Product.
8

CLAIMED TO BE DEFECTIVE BEFORE ISSUING A RETURN MATERIAL AUTHORIZATION.
SHOULD SUCH INSPECTION REVEAL, IN TLV’S REASONABLE DISCRETION, THAT THE
CLAIMED DEFECT IS NOT COVERED BY THIS WARRANTY, THE PARTY ASSERTING THIS
WARRANTY SHALL PAY TLV FOR THE TIME AND EXPENSES RELATED TO SUCH ON-SITE
INSPECTION.
Exclusion Of Consequential And Incidental Damages
IT IS SPECIFICALLY ACKNOWLEDGED THAT THIS WARRANTY, ANY OTHER EXPRESS
WARRANTY NOT NEGATED HEREBY, AND ANY IMPLIED WARRANTY NOT NEGATED
HEREBY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, DO NOT COVER, AND NEITHER TLV, TII NOR TLVJ WILL IN
ANY EVENT BE LIABLE FOR, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING,
BUT NOT LIMITED TO LOST PROFITS, THE COST OF DISASSEMBLY AND SHIPMENT OF
THE DEFECTIVE PRODUCT, INJURY TO OTHER PROPERTY, DAMAGE TO BUYER’S OR THE
FIRST END USER’S PRODUCT, DAMAGE TO BUYER’S OR THE FIRST END USER’S
PROCESSES, LOSS OF USE, OR OTHER COMMERCIAL LOSSES. WHERE, DUE TO
OPERATION OF LAW, CONSEQUENTIAL AND INCIDENTAL DAMAGES UNDER THIS
WARRANTY, UNDER ANY OTHER EXPRESS WARRANTY NOT NEGATED HEREBY OR
UNDER ANY IMPLIED WARRANTY NOT NEGATED HEREBY (INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE)
CANNOT BE EXCLUDED, SUCH DAMAGES ARE EXPRESSLY LIMITED IN AMOUNT TO THE
PURCHASE PRICE OF THE DEFECTIVE PRODUCT. THIS EXCLUSION OF CONSEQUENTIAL
AND INCIDENTAL DAMAGES, AND THE PROVISION OF THIS WARRANTY LIMITING
REMEDIES HEREUNDER TO REPLACEMENT, ARE INDEPENDENT PROVISIONS, AND ANY
DETERMINATION THAT THE LIMITATION OF REMEDIES FAILS OF ITS ESSENTIAL
PURPOSE OR ANY OTHER DETERMINATION THAT EITHER OF THE ABOVE REMEDIES IS
UNENFORCEABLE, SHALL NOT BE CONSTRUED TO MAKE THE OTHER PROVISIONS
UNENFORCEABLE.
Exclusion Of Other Warranties
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, AND ALL
OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSLY
DISCLAIMED.
Severability
Any provision of this warranty which is invalid, prohibited or unenforceable in any jurisdiction
shall, as to such jurisdiction, be ineffective to the extent of such invalidity, prohibition or
unenforceability without invalidating the remaining provisions hereof, and any such invalidity,
prohibition or unenforceability in any such jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.
13901 South Lakes Drive, Charlotte, NC 28273-6790, U.S.A.
Tel: [1]-704-597-9070 Fax: [1]-704-583-1610




Printed on recycled paper.
Tel: [81]-(0)79-422-1122
Fax: [81]-(0)79-422-0112
Rev. 9/2020 (M)PAC-65348-a
881 Nagasuna, Noguchi, Kakogawa,
Hyogo 675-8511, Japan
Manufacturer: