Process Technologyof Pennsylvania, Inc.
Series 41

TEMPTROL Valves

A very energy-efficient steam trap for winterization or instrumentation tracing. A wax-filled thermostat holds the discharge at a set temperature regardless of inlet pressure.

Max pressure
300 psi (21 bar)
Max temperature
450 °F (232 °C)
Discharge temp.
180 °F or 240 °F
Sizes
3⁄8" and 1⁄2" NPT
Request a quote Dimensions & weights
PT Series 41 TEMPTROL valve

Applications

Winterization or instrumentation tracing with condensate discharge to atmosphere or open drain systems. TEMPTROL Valves with a 240 °F (116 °C) discharge temperature can also be applied to systems with closed return.

Operating principle

A wax-filled thermostat senses the trap inlet temperature and maintains it at around the discharge temperature regardless of inlet pressure.

Design features

  • 100% thermal efficiency
  • Long service life
  • Subcooled condensate discharge
  • Fail-open
  • Self-draining and freeze-proof
  • Insensitive to pressure variation
  • Noiseless operation
  • Compact and light weight; easy installation
  • All stainless steel trap

Discharge temperature

Discharge temperature can be either 180 °F (82 °C) or 240 °F (116 °C). Other discharge temperatures are available on request.

Capacities and seat orifices

Capacity chart: trap flow rate versus inlet pressure
Capacities measured at the discharge temperature.

Parts and materials

Cross-section drawing of the Series 41 valve with numbered parts
ItemPartMaterial
1Inlet fittingStainless steel
2Body housingStainless steel
3Name plateAluminum
4Return springStainless steel
5Guide ringStainless steel
6Body plateStainless steel
7Outlet fittingStainless steel
8ValveVirgin Teflon
9SpringStainless steel
10Valve guideStainless steel
11ThermostatBrass
12Adjustment screwStainless steel
13Lock nutStainless steel
14Mounting plateStainless steel

Dimensions and weights

End connectionin (DN)“D” Øin (mm)“L”in (mm)Weightlb (kg)
3⁄8 (10)1 13⁄16 (46)3 5⁄8 (92)0.48 (0.22)
1⁄2 (15)1 13⁄16 (46)3 15⁄16 (100)0.56 (0.25)

Installation

Install valve horizontally or vertically downward with a strainer at the valve inlet.