4
YARWAY
SERIES 460D3 AND 515D3 INTEGRAL STRAINER HIGH PRESSURE DISC TRAPS
INSTRUCTION, OPERATION AND MAINTENANCE MANUAL
SERVICING
After disassembly, clean internal parts
with a cloth and non-corrosive solvent.
Replace the capsule, screen and gaskets for
best performance.
The capsule gasket is not furnished with the
repair kit and should be ordered separately.
If required, the trap capsule may be
disassembled by holding the cap in a vice with
soft copper or aluminum jaws, inserting a
short rod in the seat inlet port, and the seat
extracted with a twisting, pulling motion.
The sealing gasket will remain in the cap.
Inspect the disc and seat for dirt and wear.
Remove adhered dirt using a soft cloth and
non-corrosive solvent. If the seat and disc are
serviceable and capsule reassembly is desired,
remove the capsule gasket from the cap;
use care to avoid damage to the cap sealing
surface. Verify the gasket metal end caps have
been removed from the cap; reassemble the
capsule using a new gasket. The capsule can
then be placed in the trap.
An alternate method of capsule assembly is to
partially compress the gasket before placing
the capsule in the trap. The gasket may be
compressed by placing the capsule in an arbor
press, protecting the gasket and cap surfaces,
and applying sufficient load to reduce the space
between the cap and seat approximately 50%.
It is not necessary for the cap to contact the
seat. The space between seat an cap contact
will increase when load is removed, due to
gasket springback. The seated gasket holds the
parts together, and creates a single part that is
easily handled and simplifies trap assembly.
SPARE PARTS
To cover a one year service period, it is
recommended that spare parts be stocked as
follow:
Renewal kit -
one (1) for every four (4) traps.
Minimum number of kits one (1) and sufficient
gaskets for trap inspection.
Other replacement parts
Conversion kit -
consisting of (1) bonnet,
(1) capsule assembly, (1) screen, (1) seat to
body gasket, (1) bonnet gasket.
Steam trap figure no.
Conversion kit part no.
460 A, B, C to 460D3
972401-04
515 A, B, C to 515D3
972376-03
Renewal kit -
consisting of (1) capsule
assembly, (1) screen, (1) seat to body gasket, (1)
bonnet gasket.
Steam trap figure no.
Renewal kit part no.
360D3
972401-02
515D3
Gaskets, 460D3 and 515D3
Bonnet gasket
965924-02
Seat gasket
965924-01
Capsule gasket
972400
REASSEMBLY
1. Clean sealing surfaces and all internal parts.
2. Clean studs and nuts, lubricate studs and
nut faces with high temperature lubricant.
3. Push screen into body recess. Place capsule
in bonnet. With bonnet and seat gaskets in
place, lower bonnet over studs.
4. Replace bonnet nuts, hand tighten, then
tighten alternately to the torque listed.
BONNET NUT TORQUE VALUES
Figure no.
ft·lbs
(Nm)
460D3
65 - 70
(88 - 95)
515D3
110 - 130
(149 - 176)
