Control Products TA502 User Manual

18

845.778.5566 ● Fax: [phone] ●

www.nicholsonsteamtrap.com

Thermal actuator is filled at it’s free length with a
liquid having a lower boiling point than water. As
assembled, valve is normally open. When very
hot condensate enters trap, thermal actuator fill
vaporizes to a pressure higher than line pressure.
This forces valve into seat orifice to prevent any
further flow. As condensate collects, it takes
heat from the actuator, lowering internal

pressure. Line pressure will then compress thermal
actuator to open valve and discharge condensate. Valve
opening automatically adjusts to load conditions from
minimum on very light loads to full lift at maximum load.
Restricted orifice in TA502 (small opening at bottom of
valve seat) prevents trap from discharging continuously
on light loads such as are encountered on tracer lines.

TA SERIES

THERMOSTATIC

STEAM TRAPS

Pressures To 650 PSIG (44.8 barg)

Temperatures to 750°F (400°C)

Sealed Stainless Steel Body — Lightweight, compact

and corrosion resistant. No bolts or gaskets. Eliminates
body leaks.

Self Centering Valve — Leak tight shutoff. Improved

energy savings. Assembly of actuator and valve to
impingement plate allows valve to self-align with center
of valve seat orifice. Provides long lasting valve and seat.

Temperature Sensitive Actuators — One moving part.

Stainless Steel, fail open or fail closed, welded actuator
for maximum corrosion, thermal and hydraulic shock
resistance.

For Superheated Steam Applications — Because the

trap closes at saturated steam temperature, superheated
steam cannot reach trap.

Thermal and Hydraulic Shock Resistant —

Impingement plate plus welded construction prevent
damage to actuator.

Hardened Stainless Steel Valve and Seat — Long life.

Lapped as a matched set for water tight seal.

Inexpensive — Low initial cost.
Maintenance Free — Sealed unit. Replacement traps

cost less than repair of more expensive in-line repairable
traps.

Freeze Proof — Self draining when installed vertically.
Directional Discharge — Pipe thread erosion prevented

by directing discharge to center of pipe.

Air Vent — Efficient steam service air vent when

equipped with ISO Bellows and installed in air vent
location.

Guaranteed — Guaranteed against defects in materials

or workmanship for 3 years.

MODELS*

● TA502–Reduced capacity

● TA503–Standard capacity

● TA504–High capacity

*Add (-FC) for fail closed or (-FO) for fail open to end of model number

APPLICA TIONS

●

Unit Heaters

● Air Vents

● Steam Tracing

● Drip Legs

● Platen Presses

● Plating Tanks

● Sterilizers

● Tire Presses

● Cooking Equipment

● Laundry Equipment

● Other Process Equipment

OPTIONS

●

ISO - ISO Filled Actuator

● SLR - SLR Orifice

● SW - Socketweld

Canadian Registration # 0E0591.9

See page 9

OPERA TIONOPERA TION

845.778.5566 ● Fax: [phone] ●

www.nicholsonsteamtrap.com

19

Connections:

3/8" – 1" NPT or socketweld

TA SERIES

THERMOSTATIC

STEAM TRAPS

SPECIFICATION

Steam trap shall be of balanced pressure design with stainless
steel welded actuator capable of discharging condensate within
10°F of saturated temperature. Where greater sensitivity is
required or pr otection from flash steam locking, a SLR orifice shall
be available to allow condensate and flash steam evacuation at
or near saturated temperatures. Where subcooling of
condensate is desired alternate thermostatic actuator will be
available to allow condensate evacuation at or near 40°F below
saturated temperatures. Thermostatic actuator shall employ a
conical valve lapped in matched sets with the seat ring assuring
tight shut off. A minimum of three orifice sizes shall be available
allowing for custom capacity sizing. Trap shall be stainless steel
bodied suitable for pressures to 650 psig and available in 3/8"
through 1" NPT or socketweld.

MAXIMUM OPERATING CONDITIONS

Standard Traps
PMO:Max. Operating Pressure 500 psig (34.5 barg)
TMO: Max. Operating Temperature 600°F (316°C)

ISO Option Traps
PMO:Max. Operating Pressure 650 psig (44.8 barg)
TMO: Max. Operating Temperature 650°F (343°C)

All Traps
PMA: Max. Allowable Pressure 650 psig (44.8 barg)
TMA: Max. Allowable Temperature 750°F (400°C)

MATERIALS OF CONSTRUCTION

Body & Cover …………ASTM A351 Grade CF3M (316L)
Actuator……………………………Welded Stainless Steel
Valve & Sea ………………Hardened 416 Stainless Steel

Dimensions

NPT or

inches

Weight

Socket (mm) Lbs.

weld A B (kg)

3

/8, 1/2"

33/

4 1

3

/

4 1.1

(95) (44) (0.5)

3

/4"

315/16 13/4 1.2

(100) (44) (0.54)

1"

43/8 13/4 1.6

(111) (44) (0.73)

Maximum Capacity—lbs/hr 10°F Below Saturation (Kg/hr 5°C Below Saturation)

Trap

Orifice Differential PSIG (barg)

Inch 5 10 20 50 100 125 150 200 250 300 350 400 450 500 550* 600* 650*

(mm) (0.34) (0.7) (1.4) (3.5) (6.9) (8.62) (10.3) (13.8) (17.2) (20.7) (24.1) (27.6) (31.0) (34.5) (37.9) (41.4) (44.8)

TA502

1/8 216 265 375 592 778 838 890 980 1055 1121 1180 1235 1284 1331 1377 1425 1471

(3) (98) (120) (170) (269) (354) (381) (405) (445) (480) (510) (536) (561) (584) (604) (625) (646) (667)

TA503

1/4 550 825 1210 1975 2825 3140 3425 3650 3960 4100 4230 4420 4600 4760 4910 5060 5190

(6) (249) (374) (549) (896) (1281) (1424) (1554) (1656) (1796) (1860) (1919) (2005) (2086) (2161) (2232) (2297) (2359)

TA504

5/16 860 1220 1725 2725 3575 3850 4090 4505 4850 5155 5425 5675 5900 6110 6310 6480 6625

(8) (390) (554) (783) (1237) (1623) (1748) (1857) (2045) (2202) (2340) (2463) (2576) (2679) (2774) (2868) (2945) (3011)

* Nicholson recommends ISO filled Actuator above 500 psi (34.5 bar) and for superheated steam.

B

A

B

A

3/8" - 3/4" BODY

1" BODY