ProductsSteam SystemsSteam TrapsFloat & Thermostatic

STEAM TRAPS

Float & Thermostatic Steam Traps

Float-operated traps with integral thermostatic air vent — continuous proportional condensate drainage from low to high pressures. Available from Gestra, Spirax Sarco and Valsteam ADCA.

Gestra

Gestra float & thermostatic steam traps from the UNA ball float series — engineered for reliable continuous condensate drainage across SG iron, carbon steel, and stainless steel body options, covering pressures from PN 25 up to PN 160 for demanding industrial steam applications.

UNA Series — Carbon Steel

Full range from standard to extreme high-pressure applications. UNA 45 for high-capacity process plants; UNA 38/39 for power generation.

  • Body: Carbon Steel
  • Sizes: DN 15–65 (½”–2½”)
  • Pressure: PN 40 up to PN 160
  • Max Temp: 350°C (UNA 39)
UNA 14 -16

GESTRA

UNA 14 & UNA 16

Body: Carbon Steel • Sizes: DN15–DN25 • Max Pressure: 25–40 bar • Max Temp: up to 300–400°C • Max ΔP: up to 13–22 bar • Max Flow: high condensate capacity • Connections: Flanged/Screwed/Welded

Best for: Medium pressure steam systems

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

SPIRAX SARCO

UNA 45 / UNA 46

Body: Carbon Steel / Stainless Steel • Sizes: DN15–DN65 • Max Pressure: up to 40 bar • Max Temp: up to 300–350°C • Max ΔP: up to 32 bar • Max Flow: high capacity • Connections: Flanged/Screwed/Welded

Best for: High load industrial steam systems

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

SPIRAX SARCO

UNA 38 / UNA 39

Body: Carbon Steel • Sizes: DN15–DN50 • Max Pressure: PN100–160 • Max Temp: up to 550°C • Max ΔP: up to 80–140 bar • Max Flow: very high capacity • Connections: Flanged/Welded

Best for: High pressure steam applications

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

SPIRAX SARCO

UNA 45 MAX / UNA 46 MAX / UNA 46A MAX

Body: Carbon Steel / Stainless Steel • Sizes: DN40–DN65 • Max Pressure: 40 bar • Max Temp: up to 350°C • Max ΔP: up to 32 bar • Max Flow: very high capacity • Connections: Flanged/Screwed/Welded

Best for: Heavy condensate loads & high capacity systems

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

UNA Series — Stainless Steel

Full stainless steel construction for corrosive media, hygienic processes and aggressive chemical environments.

  • Body: Stainless Steel (1.4408)
  • Sizes: DN 15–150 (½”–6″)
  • Max Pressure: PN 40 / Class 300
  • Max Temp: 250°C

GESTRA

Body: Stainless Steel  ·  Sizes: DN 15–25 (½"–1")  ·  Max Pressure: PN 40 (40 bar) Max Temp: 250°C  ·  Application: Corrosive & hygienic media  ·  Connections: Flanged / Screwed

GESTR

Body: Stainless Steel  ·  Sizes: DN 15–25 (½"–1")  ·  Max Pressure: PN 40 (40 bar) Max Temp: 250°C  ·  Application: Corrosive & hygienic media  ·  Connections: Flanged / Screwed

Spirax Sarco

Spirax Sarco FT series float & thermostatic steam traps — robust and efficient for process heating, unit heaters, heat exchangers and steam distribution across cast iron and carbon steel construction.

FT Series — Cast Iron

Proven float & thermostatic traps for unit heaters, process heating and low-pressure steam distribution.

  • Body: Cast Iron
  • Sizes: DN 15–50 (½”–2″)
  • Max Pressure: 14 bar
  • Max Temp: 198°C
FT14 (Flanged & Screwed)

SPIRAX SARCO

FT14(Flanged/BSP)

Body: Cast Iron • Sizes: ½"–1" (DN 15–25) • Max Pressure: 14 bar • Max Temp: 198°C • Max ΔP: up to 14 bar • Max Flow: 1,060 kg/h • Connections: Screwed BSP/NPT / Flanged PN16

Best for: Low capacity steam applications

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

SPIRAX SARCO

FT14C

Body: Cast Iron • Sizes: ½"–1" (DN 15–25) • Max Pressure: 14 bar • Max Temp: 198°C • Max ΔP: up to 14 bar • Max Flow: 1,060 kg/h • Connections: Screwed BSP/NPT / Flanged PN16

Best for: Low capacity steam applications

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

FT Series — Carbon Steel

Higher-pressure float traps for demanding process heating, heat exchangers and steam distribution up to 42 bar.

  • Body: Carbon Steel
  • Sizes: DN 15–50 (½”–2″)
  • Max Pressure: 42 bar (FT64)
  • Max Temp: 256°C
FT44-46-47

SPIRAX SARCO

FT44 / FT46 / FT47

Body: Carbon Steel / Stainless Steel / SG Iron • Sizes: DN15–DN100 • Max Pressure: up to 32 bar • Max Temp: up to 300°C • Max ΔP: up to 21–32 bar • Max Flow: high capacity (model dependent) • Connections: Flanged

Best for: Medium to high pressure industrial steam systems

✔ IBR Approved    ✔ Long Service Life    ✔ Low Maintenance

Valsteam ADCA

Valsteam ADCA FLT series — the most comprehensive range of float & thermostatic steam traps available in SG iron, carbon steel and stainless steel for pressures up to 130 bar and temperatures up to 350 ºC.

FLT Series — SG Iron

Comprehensive SG iron float traps covering light-duty to medium industrial applications up to 16 bar.

  • Body: SG Iron
  • Sizes: DN 15–50 (½”–2″)
  • Max Pressure: 16 bar
  • Max Temp: 250°C
FlLT 16

FLT16

VALSTEAM ADCA

Body: SG Iron  ·  Sizes: ½”–¾” (DN 15–20)  ·  Max Pressure: 14 bar  ·  Max Temp: 198°C  ·  Max Flow: 495 kg/h  ·  Connections: Threaded Rp·NPT / Flanged PN16

VALSTEAM ADCA

FLT20

Body: SG Iron  ·  Sizes: ½”–1″ (DN 15–25)  ·  Max Pressure: 14 bar  ·  Max Temp: 250°C  ·  Max Flow: 595 kg/h  ·  Connections: Threaded / Flanged PN16 / ASME CL150

VALSTEAM ADCA

FLT21

Body: SG Iron  ·  Sizes: ½”–1″ (DN 15–25)  ·  Max Pressure: 14 bar  ·  Max Temp: 250°C  ·  Max Flow: 710 kg/h  ·  Connections: Threaded / Flanged PN16 / ASME CL150

VALSTEAM ADCA

FLT25

Body: SG Iron  ·  Sizes: 1″ (DN 25)  ·  Max Pressure: 14 bar  ·  Max Temp: 198°C  ·  Max Flow: 600 kg/h  ·  Connections: Threaded Rp·NPT / Flanged PN16

VALSTEAM ADCA

FLT27

Body: SG Iron  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 14 bar  ·  Max Temp: 250°C  ·  Max Flow: 3,000 kg/h  ·  Connections: Threaded / Flanged PN16 / ASME CL125

VALSTEAM ADCA

FLT29

Body: SG Iron  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 16 bar  ·  Max Temp: 220°C  ·  Max Flow: 3,000 kg/h  ·  Connections: Threaded / Flanged PN16 / ASME CL125

FLT Series — Carbon Steel

The widest range — from standard process draining to extreme 130 bar high-pressure power plant applications.

  • Body: Carbon Steel
  • Sizes: DN 15–80 (½”–3″)
  • Pressure: 14–130 bar
  • Max Temp: 350°C (FLT312/314)
VALSTEAM ADCA

FLT30

Body: Carbon Steel  ·  Sizes: ½”–1″ (DN 15–25)  ·  Max Pressure: 30 bar  ·  Max Temp: 250°C  ·  Max Flow: 710 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT31

Body: Carbon Steel  ·  Sizes: ½”–1″ (DN 15–25)  ·  Max Pressure: 30 bar  ·  Max Temp: 250°C  ·  Max Flow: 710 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT35

Body: Carbon Steel  ·  Sizes: ½”–1½” (DN 15–40)  ·  Max Pressure: 32 bar  ·  Max Temp: 250°C  ·  Max Flow: 1,100 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT37

Body: Carbon Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 32 bar  ·  Max Temp: 250°C  ·  Max Flow: 5,000 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT39

Body: Carbon Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 32 bar  ·  Max Temp: 250°C  ·  Max Flow: 5,000 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT39TW

Body: Carbon Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 32 bar  ·  Max Temp: 250°C  ·  Note: TW element  ·  Connections: Threaded / Flanged PN40

FLT Series — Stainless Steel

Full stainless steel construction for aggressive, hygienic or high-purity steam systems up to 40 bar.

  • Body: Stainless Steel
  • Sizes: DN 10–50 (⅜”–2″)
  • Max Pressure: 40 bar
  • Max Temp: 300°C
FLT 40
VALSTEAM ADCA

FLT40

Body: Stainless Steel  ·  Sizes: ⅜”–¾” (DN 10–20)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Max Flow: 495 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT41

Body: Stainless Steel  ·  Sizes: ⅜”–1″ (DN 10–25)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Max Flow: 710 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT45

Body: Stainless Steel  ·  Sizes: ½”–1½” (DN 15–40)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Max Flow: 1,100 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT47

Body: Stainless Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Max Flow: 5,000 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT49

Body: Stainless Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Max Flow: 5,000 kg/h  ·  Connections: Threaded / Flanged PN40 / ASME CL150–300

VALSTEAM ADCA

FLT49TW

Body: Stainless Steel  ·  Sizes: ½”–2″ (DN 15–50)  ·  Max Pressure: 40 bar  ·  Max Temp: 300°C  ·  Note: TW element  ·  Connections: Threaded / Flanged PN40

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