Comprehensive Solution For Steam And Heat System

Thermodynamic disc Steam Trap

Steam trap is a device that can automatically remove non-condensable gases such as steam condensed water and air in heating equipment or steam pipes, with no steam leak.

Thermodynamic traps are widely used in low, medium and high pressure steam delivery pipes, process heat tracing, and small displacement equipment due to their small size, large displacement, energy saving, long life, and low temperature resistance.

The technical advantages of VMV traps are: unique and reasonable structure + high-precision internals!

High Strength Corrosion Resistance

Using A105 (15CrMo) material, the corrosion allowance, minimum shell wall thickness, pressure and temperature grade are fully considered in the design.

Unique Valve Seat And Valve Disc

The valve seat and valve plate are made of martensitic stainless steel. The unique heat treatment can provide low temperature (less flash steam) and saturated condensate removal solutions according to different working conditions.

Stainless steel insulation cover

Stainless steel insulation cover ensures that the internal transformer chamber will not be affected by the outdoor environment to eliminate the number of runaways and movement developments.

Built-in Filtering Device

Effectively prevent pipeline impurities from entering the valve, ensure the normal operation of the trap.

Structural Features

VMV thermal power trap low pressure trap valve body uses A105, medium pressure trap valve body adopts 15CrMo.

According to Bernoulli's equation, after repeated calculations and a large number of experiments, it is finally determined that each product can provide low temperature type and saturated type. The low-temperature type discharges low temperature (large subcool-ing) and with low noise but poor air discharge capacity; the saturated type discharges condensed water close to the saturation temperature (low subcooling), with greater noise and good air discharge capability.

Thermodynamic steam traps work on the difference in flow rates between steam and condensate. When the condensed water passes through the valve seat, the flow rate is small, and the valve plate opens to remove the condensed water; when the steam enters the valve seat, the valve seat is closed due to the high flow rate. The low-temperature trap is a flash steam to close the valve seat.

VMV breaks through the problems of thermal power traps that are not energy-saving, noisy, and emit original steam, and become the best steam pipe guide trap. Its advantages are small size, long life, reliable action, convenient maintenance, and low noise ( Low temperature type) No original steam leakage.

The body and bonnet of the thermodynamic steam trap is made of ASTM A105 (15CrMo), the internals are made of stainless steel, and with built-in filter.

  • ● Nominal pressure: PN25;
  • ● Maximum allowable temperature: 425℃
  • ● Maximum working pressure: 1.6MPa;
  • ● Maximum working temperature: 400/425℃;
  • ● Connection method: threaded RC or flange (GB/T9115.1—2000; HG/T20615-2009; HG/T20592-2009, etc.)

Thermal Power Trap Selection and Installation

Thermodynamic steam traps are intermittent drainage. Normally, STD16 traps have a subcooling degree of 5-10°C, and STD42 has a subcooling degree of 20-50°C. If there is a requirement for subcooling, indicate when ordering. The back pressure rate of thermodynamic traps can reach 80% (back-end pipeline pressure/steam pressure), which is suitable for pipelines and small equipment to remove condensate. In general, the safety factor is 2-3 times.

Warm reminder: The condensed water volume and pressure difference of steam equipment are important indicators for type selection.

The displacement of the same type of trap increases as the pressure difference increases. Please check the displacement curve in detail. Please don't mistake it for a large-diameter trap with a large displacement.