Flanged condensate drains
How to choose a flanged steam trap by pressure and diameter
The selection begins with the condensate flow rate and operating pressure drop. The starting load, when the cold equipment warms up, and the normal operating mode are taken into account. The performance is checked according to the manufacturer's schedule or table. The connection diameter is selected after checking the throughput, and not simply equal to the size of the steam pipe.
Each steam trap has permissible temperature, pressure and back pressure limits. The designation DN describes the nominal size (diameter), PN - the nominal pressure, related to the performance characteristics. Additionally, check:
- flange standard;
- sealing surfaces;
- location of holes;
- installation length.
Types of flanged steam traps
The choice of mechanism depends on how condensate is formed and how much the load changes. For a heat exchanger, timely removal of liquid is important at different steam supply. For mains drainage, the compactness of the unit, the operating difference and the ability to operate under given conditions are also evaluated.
Float flange
When the liquid fills the housing, the float rises and opens the outlet valve. After the level drops, the passage is closed. The flanged float drain drains the liquid according to its flow. This operation is suitable for heat exchange equipment with variable load.
Thermodynamic flanged
In this version, the operation of the disk is controlled by pressure changes associated with the movement of the medium and the formation of secondary boiling steam. The condensate is released in separate cycles. The D111 model belongs to the thermodynamic UKSPAR series. For selection, check the operating range and backpressure: too small a pressure difference can disrupt the operation of the mechanism.
Manufacturing materials: steel, cast iron
The body takes up the pressure of the environment and temperature loads. The product can be made of high-strength cast iron EN-GJS400-15 or steel EN 1.0619. The material of a specific size is specified when ordering. The seat, valve and gaskets must also meet the operating conditions.
If the flanged condensate drain operates with frequent starts, evaluate the warm-up mode and the condition of the drainage system. Choosing a stronger housing does not eliminate the causes of water hammer. Correct pipe slopes, timely water drainage, and coordinated operation of the fittings are required.
Advantages of flange connection for large diameters
Flanges form a detachable connection, thanks to which the assembly can be removed without cutting the pipe. This facilitates repair and replacement of equipment. This method of connection is convenient for industrial piping, in particular with increased diameters, although flange models also exist in small sizes.
For tightness, compatible surfaces, a correctly selected gasket and uniform tightening of fasteners are required. Bolts do not correct pipe misalignment. After installation, the connections are checked according to the accepted procedure. Space is left nearby for access to the cover, filter and shut-off valves.
Where are flanged steam traps used?
They are used in steam systems of enterprises, boiler rooms, heat exchange units, drying and other technological equipment. The type of device is coordinated with the needs of a specific consumer. It is important to consider where the drained condensate goes and what pressure is maintained in the return line.
Buy flanged condensate drain with delivery across Ukraine
To order from UKSPAR, prepare data on pressure, temperature, condensate amount, DN and connection dimensions. Add a description of the load and return line parameters. The manager will clarify the availability of the desired model, cost and equipment. Delivery terms in Ukraine are agreed upon when placing an order.