172-65288MA-02 (SW1U-A/SW1U-B) 6 Feb 2019
12
Table of Tightening Torques
Part
SW1U-A
SW1U-B
Torque
Distance Across
Flats
Torque
Distance Across
Flats
N
⋅
m
(lbf·ft)
mm
(in)
N
⋅
m
(lbf·ft)
mm
(in)
Cover Nut
300
(220)
30
(1
3
/
16
)
1,200
(890)
46
(1
13
/
16
)
Valve Seat
Body Bolt
100
(73)
24
(
15
/
16
)
350
(260)
30
(1
3
/
16
)
Valve
Holder Bolt
100
(73)
24
(
15
/
16
)
120
(88)
24
(
15
/
16
)
Lever Bolt
35
(26)
16
(
5
/
8
)
150
(110)
24
(
15
/
16
)
NOTE: -Coat all threaded portions with anti-seize.
-If drawings or other special documentation were supplied for the
product, any torque given there takes precedence over values
shown here.
(1 N
⋅
m
≈
10 kg
⋅
cm)
Troubleshooting
NEVER apply direct heat to the float. The float may explode due to
increased internal pressure, causing accidents leading to serious injury
or damage to property and equipment.
WARNING
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.
CAUTION
When the product fails to operate properly, use the following table to locate and
cause the remedy.
Problem
Cause
Remedy
No condensate
is discharged
The float is damaged or filled with
condensate
Replace with a new float unit
The valve is stuck closed
Disassemble, inspect, clean
The inlet strainer has become clogged
Clean the strainer
Condensate
discharge is
poor
The inlet pressure is too small or the
back pressure is too large
Adjust the pressure
The inlet strainer has become clogged
Clean the strainer
Steam is
blowing
The valve or valve seat body have a
build-up of dirt
Disassemble, inspect, clean
The valve or valve seat body are
damaged or deformed
Replace with a new valve
and/or valve seat body
The valve is stuck closed
Disassemble, inspect, clean
