Spirax Sarco Liquid Expansion Steam Traps are thermostatic traps. They have an oil filled element that expands when the system is heated up and the valve gets too close to the seat. Then the trap will self adjust which will let the temperature of the trap release between 60 degrees Celsius and 100 degrees Celsius. This range in temperature is perfect for expelling large amounts of air and cold condensate at the start up of the system.
Here are 3 different types of the Liquid Expansion Steam Traps. The Freezeton II Temperature Actuated Trap, the No 8 Liquid Expansion Steam Traps and the Thermoton Liquid Expansion Steam Trap.
The PMO (Maximum Operating Pressure on the Freezeton III Temperature Actuated Drain Trap is 200 PSIG. It is available in one size, 1/2″ with NPT connections. These traps are made from Stainless Steel and Brass.
The Maximum Temperature Operation is 180 degrees Fahrenheit. These are the limiting operating conditions. The Pressure Shell Design Conditions are PMA of 200 psig and a TMA of 388 degrees Fahrenheit.
These drain traps consist of a Body Inlet Side, Valve Seat, Valve Seat, Valve head, Spring, Body Seal, Thermal Actuator and the Body Outlet Side. All of these parts are made by Stainless Steel, EPDM or Brass.
Basic applications for these drain traps are for freeze protection for the Float and Thermostatic Traps, Coils, Tanks, Water Lines on Docks, Eyewash Stations, Safety Showers and Tracing Condensate Manifolds just to name a few.
The Operation of the Freezeton III will be for any application that the water flow is necessary to reset the temperature in order to prevent freezing of float and thermostatic traps.
Some basic specs of these traps are that the temperature actuated drain traps have a stainless steel body with a brass thermostatic actuator located inside. This trap can work in either a vertical or a horizontal position. The actuators on these traps are tamper proof and have a sealed in unit. The actuator will open at about 35 degrees Fahrenheit and will be completely open at 35 degrees. The actuator will close when the temps reach about 40 degrees. The drain trap is set to function at 0-to 200-psig pressure ranges.
When these traps are installed, you will see a marking on the trap, this will tell the flow direction that the trap should be placed on the water line. If you don’t properly install these traps they will not work and may cause other problems down the line .You will need an isolation valve to be installed in front of the trap for the removal of the trap without actually having to drain the entire system.
Before installing any traps in any system, always read the manuals and the instructions so you can install and maintain them properly. You don’t want to have any problems where you are going to have to shut down your system. Proper maintenance is key to a great running system.
