Options Connectors for Steam Traps

Options Connectors for Steam Traps
Steam Trapping and
Steam Tracing Equipment
Steam Trap Options
Thermic Vent Buckets
Whenever steam is turned on and off, air will accumulate in the piping and
steam equipment. A trap equipped with a thermic bucket will discharge this
air 50 to 100 times faster than a standard bucket, reducing warm-up time.
Thermic vent buckets are suitable for pressures up to 130 psig (9 bar).
A large vent hole in the bucket can also solve air venting problems upon
start-up.
Thermic
Vent
Internal
Check
Valve
Internal Check Valves—1/2'' (15 mm) Thru 2'' (50 mm) NPT
Almost all Armstrong inverted bucket steam traps can be equipped with internal
check valves. A check valve is needed between the trap and the equipment
being drained in the following cases:
• When the trap is installed above the unit drained
• When sudden pressure drops may occur in the steam supply to the unit
• Whenever a back pressure exists in the condensate return line
Internal
Check
Valve
Armstrong spring-loaded, stainless-steel internal check valves can be screwed
directly into the trap inlet or into an extended inlet tube having a pipe coupling
at the top.
2.06
“In-Line” Check Valve—1/2'' (15 mm) and 3/4'' (20 mm) NPT
On 1800 and 2000 Series stainless-steel traps, an internal check valve cannot
be installed. Armstrong’s CVI “in-line” check valve will solve the problem.
Valve
Retainer
Pop Drain for Freeze Protection
In general, a properly selected and installed Armstrong trap will not freeze
as long as steam is coming to the trap. If the steam supply is shut off, a pop
drain should be used to automatically drain the trap.
Maximum Operating Conditions
Pressure: 600 psig (41 bar)
Temperature: 350°F (177°C)
184
SS
Polished
Ball
O-Ring
Body
Spring
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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Steam Trap Options
Steam Trapping and
Steam Tracing Equipment
Vacuum Breaker—3/8'' (10 mm) and 1/2'' (15 mm) NPT
Many times, condensate will be retained ahead of steam traps because of
the presence of a vacuum. To break a vacuum, air must be introduced into
the system by means of a vacuum breaker.
D
For maximum protection against freezing and water hammer in heating coils
under modulated control, for example, vacuum breakers are recommended
in conjunction with freeze protection devices.
B
Vacuum Breaker
Size
“B” Pipe Connections
in
mm
in
mm
1/2 NPT
15
3/8 NPT
10
3/8 NPT
10
1/4 NPT
6
“C” Height
1-1/4
32
1-3/32
28
“D” Width
7/8 Hex
22 Hex
11/16 Hex
17 Hex
C
Dirt Problems
Whenever dirt plugs the bucket vent, Armstrong recommends the use of
a scrubbing wire which, on each cycle, keeps the bucket vent hole open.
NOTE: On small size stainless-steel (only) bucket traps, a wiggle wire is
installed as standard.
3/8''
In normal conditions, the inverted bucket trap is not sensitive to dirt problems
(because of its orifice at the top of the trap), unlike most other traps, which
should be installed normally with a strainer (see Armstrong “Y” Type Strainers
page 445).
Socketweld Dimensions
Pipe Size
S-2
in
mm
in
mm
Scrub Wire
Flanged Connections
Flanged traps are furnished with the following ANSI B16.5 flanges as standard.
Flange facings comply with ANSI B16.5.
S-4 Min.
in
mm
1/2
15
0.855
22
3/8
10
3/4
20
1.065
27
1/2
13
1
25
1.330
34
1/2
13
1-1/4
32
1.675
43
1/2
13
1-1/2
40
1.915
49
1/2
13
2
50
2.406
61
5/8
16
2-1/2
65
2.906
74
5/8
16
3
80
3.535
90
5/8
16
Pressure Class Rating
Inlet Connection
Outlet Connection
150 and 300
1/16" Raised Face
1/16" Raised Face
600 and Higher
1/4" Raised Face
1/4" Raised Face
Other types of flanged connections (such as large male and female ring joint, large
or small tongue and groove, etc.) can be furnished. Flange requirements for both inlet
and outlet must be specified.
Socketweld Connection
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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185
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