INSTRUCTION MANUAL
Thank you for purchasing the Steam Trap Module
P46Y used to retrofit the series 711/721 made by
Yarway Corp.
This product has been thoroughly inspected before
being shipped from the factory. When the product is
delivered, before doing anything else, check the
specifications and external appearance to make sure
nothing is out of the ordinary. Before beginning
installation or maintenance, please read this manual to
ensure correct usage of the product.
This instruction manual is needed not only for installation, but for subsequent
troubleshooting. Please keep it in a safe place for future reference.
The contents of this manual are subject to change without notice.
1. Safety Considerations
2. Specifications
* Maximum allowable pressure (PMA) and maximum allowable temperature (TMA) are
PRESSURE SHELL DESIGN CONDITIONS (
NOT
OPERATING CONDITIONS)
** Valve No. is displayed for products with options. This item is omitted from the
nameplate when there are no options
Refer to the product nameplate for detailed specifications.
Model
Max. Allowable
Temperature TMA*
Nominal Diameter
Maximum Operating
Pressure PMO
Max. Operating
Temperature TMO
Production Lot No.
Valve No.**
3. Configuration
Steam Trap Module
P46Y
1
2
3
4
5
7
8
6
No.
Name
1
2
3
4
5
6
7
8
Module Valve Seat
Air Vent Ring
Disc Holder Ring
Disc
Cover
Module Gasket
Cap
Nameplate
Max. Allowable
Pressure PMA*
Keep this manual in a safe place for future reference
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.
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/closing
should be carried out only by trained maintenance personnel.
DO NOT subject the trap to condensate loads that exceed its
discharge capacity.
Failure to observe this precaution may lead to
condensate accumulation upstream of the trap, resulting in reduced
equipment performance or damage to the equipment.
CAUTION
5. Inspection and Maintenance
Operational Check: A visual inspection can be carried out to determine whether the
steam trap is operating properly or has failed. Periodically (at least biannually) the
operation should also be checked using diagnostic equipment such as TLV TrapMan
or TLV Pocket TrapMan.
(When conducting a visual inspection, flash steam is sometimes mistaken for steam
leakage. For this reason, the use of diagnostic equipment is highly recommended.)
6. Disassembly / Reassembly
Use the following procedures to remove components. Use the same procedures in
reverse to reassemble.
7. Troubleshooting
881 Nagasuna, Noguchi, Kakogawa, Hyogo 675-8511, Japan
Tel: [81]-(0)79-422-1122 Fax: [81]-(0)79-422-0112
Manufacturer:
Copyright 2015 by TLV Co., Ltd. All rights reserved
Printed on recycled paper
Rev. 4/2016 (M)
Procedure
(P46Y only; follow Yarway's manual for the body)
Cover
Gaskets
Valve Seat Surface:
Disc
Disc Holder Ring
Air Vent Ring
Check inside for damage, dirt, grease, oil film, rust, scale
Check for warping or damage
Check for scratches or wear
Check for damage or wear
Check for damage or wear
Check for damage or wear
Screen is clogged with rust or scale
(Model 721)
Air vent ring (bimetal) is broken or worn,
causing air-binding
Disc holder ring is broken or worn, causing
air binding
Disc is sticking to valve seat (due to oil etc.)
Valve closure is obstructed by scale, etc.
Disc or module valve seat is worn
Air vent ring (bimetal) or disc holder ring is
broken, obstructing valve closure
Disc is sticking to top of cover (due to oil, etc.)
Foreign matter or oil film on disc or module
valve seat
Scratches or wear on disc or module valve
seat
Bypass valve is damaged or open
Module valve seat gasket is damaged
Cover is loose or sealing surface between
cover and module valve seat is damaged
Inlet and discharge channels may be
connected, due to erosion
Clean
Replace air vent ring
Replace disc holder ring
Clean
Clean or replace screen
Replace worn parts
Replace broken parts
Clean
Clean
Replace disc or module
valve seat
Replace or close valve
Replace module gasket
Tighten or replace cover,
or replace module valve
seat
Replace trap (study trap
capacity)
No
condensate
discharged
(blocked) or
discharge is
poor
Steam
leakage or
blowing
from valve
seat
Valve
chattering
(leakage)
Leakage
from a
location
other than
valve seat
c
(P46Y only; follow Yarway's manual for the body)
Part
During Disassembly
During Reassembly
Remove with a 1 " (41 mm)
socket wrench
Remove, being careful not to
scratch the lapped surface
Remove without bending, as it
will not return to its proper
shape
Remove without bending
Remove, being careful not to
scratch the lapped surface
Do not remove
Coat threads with anti-seize and
tighten to 87 lbf
・
ft (119 N
・
m)
Make sure the seat surface (the
lapped side) is facing down, toward
valve seat
Make sure that it does not stick up
higher than the valve seat surface
Reinsert without bending
Insert into the body levelly, do not tilt
If gasket is damaged, replace module
valve seat
Cover
Disc
Disc Holder
Ring
Air Vent Ring
Module Valve
Seat
Module
Gasket
4. Proper Installation
1. Before installation, be sure to remove all protective seals.
2. Remove the module valve seat unit of the steam trap
711/721.
3. After removal and disposal of the module clean out dirt
and scale from the trap body. Check that the seat threads
have not been eroded due to steam leakage. If they are
damaged the trap cannot be used. A TLV steam trap
P46SRN should replace it.
4. To retrofit the existing steam trap install the P46Y parts
as shown.
5. Mount air vent ring, disc holder ring and disc on module
valve seat (the module gasket is already attached).
6. Insert the module into the body.
7. Coat cover threads with anti-seize, put it on top and tighten
to the proper torque.
8. If there is a problem, see the "Troubleshooting" section.
8
5
/
