IM-P071-02
CMGT Issue 3
9
HP70 Series Bimetallic Steam Trap
The Spirax Sarco HP70 is a bimetallic steam trap.
This trap operates on the basis of two opposing forces acting on the valve - an opening force created by the
valve opening spring, and a closing force resulting from the condensate temperature acting on the bimetallic
elements.
It operates with no loss of steam and automatically and quickly drains air, non-condensable gases and large
quantities of cold water on start-up.
After installation or maintenance ensure that the system is fully functioning. Carry out tests on
any alarms or protective devices.
Note: During commissioning the valve may need resetting to take account of any backpressure
in the return line.
4. Commissioning
5. Operation
