Steam Traps - Thermostatic Capsule - TSC | BLU ZAC | Philippopoulos s.a.
Steam Traps - Thermostatic Capsule - TSC | BLU ZAC | Philippopoulos s.a.

Steam Traps - Thermostatic Capsule - TSC | BLU ZAC

BLU ZAC TSC22 – Thermostatic Capsule Steam Trap

The BLU ZAC TSC22 is a thermostatic steam trap designed for condensate removal in standard industrial steam applications. The body is made from machined forged material, featuring an integrated inlet strainer to protect the seat from solid particles.

Operating Principle

At startup, the capsule remains open due to low temperature, allowing air and cold condensate discharge. As steam approaches, the liquid inside the capsule heats, expands, and presses the shutter against the seat. With new condensate accumulation, the capsule cools, and the steam trap reopens.

Materials and Sealing

  • Body: ASTM A105, ASTM A350 LF2, ASTM A182 F304/F316, or ASTM A182 F22 Cl.3.
  • Cover: ASTM A350 LF2, ASTM A182 F316L, or ASTM A182 F22 Cl.3.
  • Seat: AISI 420.
  • Seat Gasket: AISI 304.
  • Cover/Plug Gaskets: Graphite with 316 winding.
  • Capsule/Diaphragm Valve: Stainless Steel.
  • Strainer: AISI 316.

Capsule Selection

The standard capsule operates with a subcooling of approximately 10 °C. Options for 5 °C, 30 °C, and 40 °C are available, depending on the desired discharge temperature, backpressure, and whether the application requires rapid drainage or greater sensible heat recovery.

Installation and Maintenance

The TSC22 can operate in any position, with horizontal installation preferred. Maintenance involves line isolation, cover removal, body cleaning, seat and gasket replacement, and cleaning or replacing the strainer from the bottom plug.

Typical Applications

  • Steam tracing,
  • Steam network drainage,
  • Small heat exchangers and heating elements,
  • Startup points requiring venting,
  • Lines where controlled condensate subcooling is acceptable.

FAQ

When is a 5 °C capsule selected?
When discharge near saturation temperature is required.

When is 30–40 °C selected?
In tracing or applications where greater subcooling before discharge is permissible.

Is an upstream strainer necessary?
The body includes a strainer, but additional upstream protection is recommended in networks with contaminants or new welding.

Datasheet and documents

Description

The thermostatic capsule type of steam trap is created for standard applications, designed for standards customer’s requirements, it’s obtained from a machined forged billet.

Steam traps suitable for high pressures and capacities, usable for all applications.

How it works:

  1. The membrane inside the capsule, which is attached to the housing, is raised.
  2. Start-up: when the condensate begins to circulate, the capsule is prevented from reacting to the low temperature, keeping the membrane and the shutter in the open position.
  3. As the system heats up, the condensate reduces and steam begins to arrive, heating the fluid inside the capsule and expanding its volume. The thrust this generates presses the shutter onto the housing, blocking the flow and trapping the steam.
  4. As more condensate accumulates, the fluid inside the capsule cools, making the membrane contract, opening the housing and discharging the excess condensate.

Certificates

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