

Spirax Sarco FTC32 carbon steel ball float steam trap features an integral automatic thermostatic air vent and BP99/32 capsule. Available in DN15 and DN20 sizes with threaded, socket weld, and flanged connections. Maximum operating pressure 32 bar g, maximum superheat temperature 300°C.

FTC32 is a carbon steel ball float steam trap with integral automatic thermostatic air vent. It is ideal for all process drainage applications as condensate is always removed efficiently and quickly over a wide range of fluctuating pressure and load conditions. Standard connections are horizontal from right to left (R-L) when viewed from the base.
Product Features
** DN15 and DN20 (½" and ¾")**
Note: Standard connections are horizontal from right to left (R-L).
| Parameter | Value |
|---|---|
| Body Design Conditions | PN40 / ANSI 300 |
| PMA - Maximum Allowable Pressure (PN40) | 40 bar g |
| PMA - Maximum Allowable Pressure (ANSI) | 50 bar g |
| TMA - Maximum Allowable Temperature | 400 °C |
| Minimum Allowable Temperature | 0 °C |
| PMO - Maximum Operating Pressure | 32 bar g |
| TMO - Maximum Operating Temperature | 300 °C |
| Minimum Operating Temperature | 0 °C |
Note: For lower operating temperatures consult Spirax Sarco. After internals have been installed, the test pressure of the trap must not exceed 48 bar, otherwise damage to internals may occur.
Maximum Differential Pressure (ΔPMX):
| Model | FTC32-4.5 | FTC32-10 | FTC32-14 | FTC32-21 | FTC32-32 |
|---|---|---|---|---|---|
| Maximum ΔP | 4.5 bar | 10 bar | 14 bar | 21 bar | 32 bar |
Designed for Maximum Cold Hydraulic Test Pressure:

Important
The product must not be used in the shaded region of the chart or beyond its operating range, as damage to the internals may occur.
Connection Type Key:

| No. | Part | Material | Standard |
|---|---|---|---|
| 1 | Body | Cast steel | ASTM A216 WCB / DIN 17245 GS C25N |
| 2 | Cover | Cast steel | ASTM A216 WCB / DIN 17245 GS C25N |
| 3 | Cover bolts M12 × 35 | Steel | ASTM A193 B7 / A 2.70 |
| 4 | Cover gasket | Reinforced exfoliated graphite | - |
| 5 | Main valve seat | Stainless steel | BS 3146 ANC 2 |
| 6 | 'O'ring | EPDM | - |
| 7 | Main valve assembly screws M3 × 6 | Stainless steel | BS 6105 CI A2 70 |
| 8 | Ball float and lever | Stainless steel | BS 1449 304 S11 |
| 9 | Air vent assembly | Stainless steel | - |
| 10 | SLR assembly | Stainless steel | BS 970 303 S21 |
| 11 | Air vent/SLR gasket | Stainless steel | BS 1449 304 S16 |
| 12 | SLR seal | Graphite | - |
| 13 | Pivot | Stainless steel | BS 970 431 S29 |
| 14 | Strainer screen (FTC32X only) | Stainless steel | ASTM A240 316L |
| 15 | Check valve assembly (FTC32CV only) | Stainless steel | - |
Note: For clarity some items are not identified on the drawing.


Minimum Additional Cold Water Capacity from Thermostatic Air Vent (TV) Under Start-up Conditions:
When condensate is cold during start-up conditions, the internal thermostatic air vent (TV) will be open and provides additional capacity to the main valve. The following table gives the minimum additional cold water capacities from the air vent:
| Pressure P (bar) | 0.5 | 2 | 3 | 4.5 | 7 | 10 | 14 | 21 | 32 |
|---|---|---|---|---|---|---|---|---|---|
| DN15 and DN20 (kg/h) | 70 | 140 | 250 | 380 | 560 | 870 | 1130 | 1500 | 2300 |
| Size | A | B | C | D | E | F | Weight |
|---|---|---|---|---|---|---|---|
| ½" and ¾" | 150 | 135 | 74 | 169 | 120 | 26 | 5.8 |

| Size | PN40 A1 | ANSI 150 A1 | ANSI 300/JIS 20K A1 | JIS 30K A1 | B | C | D | E | F | G | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DN15 and DN20 | 150 | 144 | 150 | 150 | 135 | 121 | 180 | 120 | 26 | 47 | 7.4 |
Spare parts are available as indicated. No other parts are supplied as spares.
Available Spares:
How to Order Spares: Always order spare parts by using the description given in the column headed 'Available spares' and state the size, model number and pressure rating of the trap. Example: 1 off Main valve assembly with float for a Spirax Sarco DN15 FTC32-10-C-X-CV (R-L) ball float steam trap.

| Item | Across Flats (mm) | Thread/Bolt Size | Torque (N·m) |
|---|---|---|---|
| 3 | 19 | M12 × 35 | 65 - 70 |
| 7 | - | M3 × 6 | 1 - 1.5 |
| 16 | 17 | - | 50 - 55 |
| 17 | 19 | - | 40 - 45 |
For full details see the Installation and Maintenance Instructions (IM-P602-12) supplied with the product.
Installation Note: The FTC32 must be installed with the direction of flow as indicated on the body, and with the float arm in a horizontal plane so that it rises and falls vertically.
This product is recyclable. No ecological hazard is anticipated with the disposal of this product providing due care is taken.
Example: 1 off Spirax Sarco DN15 FTC32-10 carbon steel ball float steam trap having EN 1092 PN40 flanged connections with integral automatic air vent and material certification to EN 10204 3.1.
Optional configurations:
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