50
845.778.5566 ● Fax: 845.778.7123 ●
www.nicholsonsteamtrap.com
REPAIRABLE
STAINLESS STEEL
DURA-FLO
INVERTED BUCKET STEAM TRAPS
Pressures to 650 PSIG (45 barg)
Temperatures to 497ºF (258ºC)
Easy Trap Replacement — Universal two bolt swivel
mounting option simplifies removal from system.
Simple Installation — Stainless mounting Block mounts
permanently into system. Trap installs via two bolt universal
mount connection.
Hardened Chrome Steel Valve and Seat — Long life and
maximum corrosion resistance.
Stainless Steel Bucket — Long lasting, rugged and naturally
resistant to water hammer.
Inexpensive — Low maintenance and initial cost.
Stainless Steel Body — Durable heavy wall construction
provides years of reliable service and resists corrosion and
freezing.
Suitable for Wide Variety of Loads/Applications —
Horizontal models in three body sizes.
Resists Dirt and Scale — Valve and seats positioned at top
of traps ensure long service.
Repairable Model (TSBT-_R & USBT-_R) — Removable
cover allows pressure change or repair with existing Dura-Flo
PCA kits.
MODELS
NPT CONNECTION, REPAIRABLE
● TSBT-LR – Low Capacity, 200 PSIG
● TSBT-MR – Medium Capacity, 400 PSIG
● TSBT-HR – High Capacity, 650 PSIG
UMT CONNECTION, REPAIRABLE
● USBT-LR – Low Capacity, 200 PSIG
● USBT-MR – Medium Capacity, 400 PSIG
● USBT-HR – High Capacity, 650 PSIG
UMT CONNECTOR BLOCKS
● UMTC–Standard connector (1/2" & 3/4" only)
● UMTCY-RH–Right Hand Connector w/Y strainer*
● UMTCY-LH–Left Hand Connector w/Y strainer*
● UMTVS-BB–Connector with Isolation Valves, Strainer,
Blowdown Valve and Test Port
APPLICA TIONS
●
Steam Lines
● Process Equipment
● Steam Cookers
● Steam Heated Vats
● Pressing Machinery
● Unit Heaters
● Oil Preheaters
● Converters
● Coils
● Rotating Drum
Canadian Registration # OE10389.52
After trap is installed and primed, steam entering the
trap collects in the top of the bucket, floating the
bucket and forcing the valve into its seat. As
condensate begins to flow into the trap, steam and
air are forced from the bucket. This causes the
bucket to begin losing buoyancy, tending to pull the
valve from its seat. When enough condensate has
OPERA TION
entered the trap, displacing the steam and air, the bucket
drops, pulling the valve from the seat and allowing
condensate and air to discharge. As the flow of
condensate stops, steam enters the trap and re-floats
the bucket, forcing the valve into its seat. The cycle then
repeats as more condensate reaches the trap.
For information on Big Block UMTVS-BB Connector
SEE PAGE 116
845.778.5566 ● Fax: 845.778.7123 ●
www.nicholsonsteamtrap.com
51
REPAIRABLE
STAINLESS STEEL
DURA-FLO
INVERTED BUCKET STEAM TRAPS
SPECIFICATION
Furnish and install as shown on the plans, inverted bucket traps
capable of discharging condensate, air and other non-condensable gases without loss of steam. These traps shall have a stainless steel sealed body, hardened chrome steel valve and seat and
an all stainless steel linkage and bucket. It shall also have a universal mount connection option. The repairable traps shall have a
removable cover to allow repair or orifice change.
MAXIMUM OPERATING
CONDITIONS
PMO:Max. Operating Pressure See Orifice Selection
TMO: Max. Operating Temperature Saturated at PMO
PMA: Max. Allowable Pressure -
LR 200 psig (13.8 barg) at 450ºF (232ºC)
MR 420 psig (29.0 barg) at 450ºF (232ºC)
HR 650 psig (44.8 barg) at 497ºF (258ºC)
TMA: Max. Allowable Temperature 800ºF (425ºC)
MATERIALS OF CONSTRUCTION
Body ………………………………………ASTM A351 CF8
Cover ………………………………………ASTM A351 CF8
Bucket……………………………………………AISI 304 SS
Bucket Clip ………………………………………AISI 304 SS
Lever ……………………………………………AISI 304 SS
Inlet Tube ………………………………………AISI 304 SS
Valve ……………………Hardened Chrome Steel AISI D3
Valve Seat ………………Hardened Chrome Steel AISI D3
Swivel Connector ………………………………AISI 304 SS
Cover Gasket ………………Spiral Wound 304 SS wIth Grafoil
For Kg/Hr Multiply by .454
A
B
C
D
E
Differential Pressure
Trap
Orifice
5 10 15 30 40 70 80 125 200 250 300 400 650
Size MOP (0.34) (0.69) (1.03) (2.07) (2.76) (4.83) (5.52) (8.62) (13.79) (17.24) (20.69) (27.59) (44.83)
TSBT-LR, USBT-LR
3/32 200 85 120 145 200 230 300 325 400 500
1/4 15 800 920 1040
3/16 30 540 690 800 1000
TSBT-MR, 5/32 70 390 490 560 700 790 940
USBT-MR
1/8 125 260 325 400 530 600 750 800 970
7/64 200 200 265 315 410 470 580 610 720 900
3/32 250 155 200 240 315 360 440 480 560 690 750
5/64 400 100 130 155 210 235 280 310 360 440 460 510 580
1/4 40 1040 1350 1580 2000 2350
3/16 80 680 930 1120 1550 1775 2400 2300
TSBT - HR
1/8 250 320 42 510 700 790 1020 1090 1300 1650 1800
USBT-HR
7/64 300 220 280 325 430 500 630 685 800 1000 1100 1200
3/32 650 175 225 270 370 400 510 540 650 800 870 930 1050 1300
Maximum Capacity—(lbs/hr)
USBT REPAIRABLE SERIES
Inches (mm)
Weight
Model
AB CDE
lbs(kg)
USBT- 27⁄8 63⁄8 23⁄4 55⁄8 41⁄4 7.25
LR
(73) (161) (70) (143) (108) (3.3)
USBT- 27⁄8 73⁄8 23⁄4 65⁄8 41⁄4 8
MR
(73) (186) (70) (168) (108) (3.6)
USBT- 41⁄8 93⁄4 23⁄4 83⁄4 61⁄4 25
HR
(104.8) (247.7) (70) (222.3) (158.8) (11.33)
DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)
Inches (mm)
Weight
Model
AB CD
lbs(kg)
TSBT-LR
27⁄
8 6
1
⁄
4 4
5
⁄
16 5
9
⁄
16 6.6
(73) (159) (110) (141) (3.0)
TSBT-MR
27⁄
8 7
1
⁄
4 4
5
⁄
16 6
9
⁄
16 7.2
(73) (184) (110) (166) (3.2)
TSBT-HR
41⁄
8 9
1
⁄
2 58
1
⁄
2 22
(104.8) (241.3) (127) (215.9) (10)
DIMENSIONS inches (mm)
AND WEIGHTS pounds (kg)
A
B
C
D
TSBT REPAIRABLE SERIES
Connections: 3/8" – 1" NPT
Connections:
Universal Mount Two Bolt Swivel Connection
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