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Steam traps

Velan steam traps provide efficient condensate discharge while retaining live steam, with advanced designs tailored for both low and intermediate capacities. These traps can incorporate check valves, optional strainers, or blow-off valves, offering a cost-effective solution that guarantees reliable performance, easy maintenance, and zero steam loss, ideal for drip, tracing, and heating applications.

Four-step illustration of a piston and crankshaft mechanism. Each step shows the piston moving inside the cylinder: 1) down, 2) up, 3) further up, and 4) down again, illustrating the cycle of motion in a combustion engine.

The original “multi-segmented” bimetal principle actuates Velan steam traps. The individual segments of the bimetallic element act consecutively, developing forces in close relation to the saturated steam curve. This permits sensitive, efficient trap operation at all pressures.

Illustration of a mechanical device with internal components, including a coil spring, a metal ball, and various threaded parts. The device is sectioned to show its internal structure and functionality, with an arrow indicating fluid flow direction.

Valve closing force of bimetallic elements follows the saturated steam curve permitting sensitive, efficient trap operation at all pressures.

Pipes and valves with metal coverings are attached to a corrugated metallic wall, arranged vertically and horizontally. The setup includes several small hand-turn valves and features various shades of silver and yellow.

Every Velan steam trap closes tightly on saturated steam temperature. There is no leakage of live steam at saturation temperature. Incoming Positive closing for long periods on dry superheated steam has enormous advantages in power plant and marine service

Cutaway diagram of a mechanical device showing fluid flow. Arrows indicate the direction of movement through the system, with components such as a ball valve, spring, and filter visible. Blue shading represents the fluid path.

Integral check valve operation built-in to the main valve to prevent backflow.

Pressureup to 4000 psi (276 bar)
SizeNPS 3/8-3 (DN 10-80)
Tests and Design StandardsASME Sec VIII-1; ASME B16.34; ASE B31.3
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