PTC-Series
Pumping Trap Combination — PTC
Traps under normal pressure, pumps when the exchanger stalls — it senses and switches itself.
Product overview
A combined trap and pump unit that drains a heat exchanger as a trap while positive pressure exists, and switches automatically to pumping when the exchanger stalls.
The problem it solves
A temperature-controlled heat exchanger stalls at low load: the steam pressure inside falls below the return line pressure and condensate stops draining. The exchanger floods, temperature control becomes erratic and waterhammer follows.
Working principle
Under positive differential the unit passes condensate as a conventional float trap. When the differential disappears, the float admits motive steam and the unit displaces the condensate against the back-pressure.
Applications
- Temperature-controlled shell and tube exchangers
- Air heater batteries and jacketed pans
- Any exchanger on modulating control that stalls at turndown
Advantages
- Eliminates stall flooding and waterhammer
- One unit instead of a trap, receiver and pump set
- No electrical supply or level instrumentation required
Specifications
- MotiveSteam or compressed air
- Max motive pressure10 bar g
- Max temperature198 °C
- Body materialCI / CS
- ConnectionsFlanged