Products › Steam Systems › Steam Traps › Float & 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

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
UNA 45-46

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
UNA 38-39

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
UNA 45 MAX / 46 MAX / 46A MAX

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
UNA 16A

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
UNA 46A

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

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
FT14 and FT14HC

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

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
FlLT 20

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
FlLT 21

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
FlLT 25

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
FlLT 27

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
FLT 29

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)
FLT 30

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
FLT 31

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
FLT 35

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
FLT 37

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
FLT 39

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
FLT 39TW

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
FLT 41

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
FLT 45

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
FLT 47

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
FLT 49

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
FLT 49TW

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