The Yoshitake TSF-13 series float steam traps are designed for steam condensate applications, featuring a double-port structure that ensures reliable performance and a large discharge capacity. The series includes the standard TSF-13 (screwed), TSF-13F (flanged), and the TSF-13CF (cast steel flanged) models. All main internal parts, such as valves, seats, air vents, and floats, are constructed from stainless steel to offer excellent corrosion resistance and durability.

Features

1. Reliable performance and large discharge capacity ensured by double-port structure.
2. All main parts such as valves, seats, air vents and floats are made of stainless steel that offer excellent corrosion resistance and durability.
3. By adopting the air vent, to exhaust the air in the steam piping system quickly, significantly shorten the equipment start-up time.
4. Stable operation realized by adopting large float.

Specifications

Model	TSF-13	TSF-13F	TSF-13CF
Nominal size	40A, 50A	40A, 50A	40A, 50A
Application	Steam Condensate	Steam Condensate	Steam Condensate
Max. working pressure	1.6 MPa	1.0 MPa / 1.6 MPa	1.0 MPa / 1.6 MPa / 3.2 MPa
Max. differential pressure (ΔPMX)	0.5 / 1.0 / 1.4 MPa	0.5 / 1.0 / 1.4 MPa	0.5 / 1.0 / 3.2 MPa
Min. differential pressure	0.01 MPa	0.01 MPa	0.01 MPa
Max. temperature	220°C	220°C	240°C
Body Material	Ductile cast iron	Ductile cast iron	Cast steel (WCB)
Float / Valve Material	Stainless steel	Stainless steel	Stainless steel
Connection	JIS Rc / NPT screwed	JIS 10K/20K RF, ASME 150/300, EN PN16/25	JIS 30K RF, ASME 150/300, EN PN25/40

Installation Caution

Install a strainer (mesh size of 80 or more is recommended) at the inlet side of the product. Due to the double-port structure, foreign substances stuck on the valve and valve seat may cause significant steam leakage.

Operation

At start-up: Since the float is down, the valve set is closed. In this state, air in the system and piping is discharged out through the air vent which is opened.

During condensate inflow: When condensate flows into the product, the float lifts up and opens the valve set, and then discharges condensate. Air is continuously discharged out from the air vent. When steam flows into the product, internal pressure of the air vent rises by steam temperature, and the air vent closes. According to the amount of condensate inflow, the float position moves up and down changing the opening degree of the valve set, and thus condensate is continuously discharged.

Maximum Continuous Discharge Capacity

The discharge capacity shown in the charts below is the maximum value. In designing a system, select a steam trap with a sufficient safety factor (at least twice). That is, for example, if a discharge capacity of 2000 kg/h is required, select a steam trap capable of discharging more than 4000 kg/h (maximum discharge).

Maximum Continuous Discharge Capacity of 40A

Maximum Continuous Discharge Capacity of 50A

Dimensions (mm) and Weights (kg)

TSF-13 (Screwed)

Nominal size	Connection	d	L	A	A1	H	Weight
40A	JIS Rc	Rc 1-1/2	270	313	281	290	19
50A	NPT	Rc 2	300	328	291	290	20

TSF-13F (Flanged)

Nominal size	Connection	d	L	A	A1	H	Weight
40A	JIS 10KRF/20KRF	40	228	423	353	290	24
40A	EN 1092 PN16 or PN25	40	230	428	353	290	24.5
40A	ASME Class 150	40	221	416	353	290	23
40A	ASME Class 300	40	221	431	353	290	25.7
50A	JIS 10KRF/20KRF	50	239	436	358	290	25
50A	EN 1092 PN16 or PN25	50	230	441	358	290	25.3
50A	ASME Class 150	50	220	433	358	290	24.5
50A	ASME Class 300	50	239	441	358	290	26.8

Installation and Piping

Piping Guidelines

• Pipe size of the outlet side of the product should be large enough so that the discharged condensate flows without any resistance.
• If the product is installed close to a regulating valve, make sure to install the product at the inlet side of the regulating valve.
• To discharge condensate from the steam main, be sure to install the product on piping taken from the lower part of drip leg.
• Install the products for each device independently.
• When collecting condensate, connect the trap discharge pipe to the top of the condensate collecting pipe and install a check valve to prevent backflow.
• Provide a bypass line around the product, and install stop valves at the outlet side of the product.

Installation Posture

The mounting position of the product is horizontal piping. Do not tilt the product during use. Do not install in vertical piping. Allowable tilt from horizontal line is within ±5°. Support the product cover when it is necessary.

Maintenance and Troubleshooting

Conduct daily and periodic inspections in order to maintain the optimal performance of the product.

Trouble	Cause	Remedy
Condensate is not discharged	1. Blockage of foreign substances in the valve seat. 2. Float is broken. 3. Breakage as a result of abnormal pressure rising. 4. Steam locking. 5. Product is in wrong posture.	1. Clean the valve set. 2. Change it into new one. 3. Replace the product with new one. 4. Change the piping system layout. 5. Install it correctly.
Continuous blowout	1. Foreign substances stuck on valve or valve seat. 2. Scratches on the valve or valve seat. 3. Insufficient capacity of the product. 4. Product is in wrong position.	1. Clean the valve set. 2. Replace the valve set. 3. Replace the product with another model of sufficient capacity. 4. Install it correctly.
Steam leakage	1. Leakage due to loosening of the nut fixing the body and cover, or damage due to deterioration of body gasket. 2. Leakage as a result of abnormal pressure rising.	1. Replace the body gasket with new one, and retighten the nut. 2. Replace the product with new one.

Exploded Drawing and Parts

40A Exploded Drawing

50A Exploded Drawing

Note: The Air Vent cannot be removed from the Cover. The Valve Set cannot be disassembled.

Parts List:

1. Body (Ductile Cast Iron / WCB)
2. Cover (Ductile Cast Iron / WCB)
3. Body Gasket (Non Asbestos)
4. Stud Bolt (Steel)
5. Nut (Steel)
6. Name Plate (Aluminium)
7. Valve Set (Stainless Steel)
8. Valve Gasket (Non Asbestos)
9. Spacer (Stainless Steel - 50A only)
10. Float Protector (Stainless Steel)
11. Stud Bolt (Stainless Steel - 50A only)
12. Stud Bolt (Stainless Steel - 50A only)
13. Nut (Stainless Steel - 50A only)
14. Bolt (Stainless Steel - 40A only)
15. Float (Stainless Steel)
16. Air Vent (Stainless Steel)
17. Airvent Gasket (Stainless Steel)

Disassembly and Reassembly

Disassembly:

1. Remove the nut that secures the body with a spanner (width across flats: 19 mm), and remove the body and the body gasket from the cover.
2. Remove the float from the float arm with a wrench (width across flats: 17 mm).
3. Clean the upper and lower valve and valve seat of the valve set with a cleaning agent.
4. For 40A: Remove the hexagon bolt with a spanner (10 mm). Remove the float protector and remove the valve set from the cover.
5. For 50A: Remove the nut with a spanner (13 mm) and remove the float protector. Remove the spacer and remove the valve set from the cover.

Reassembly:

1. Apply a paste-like lubricant to the valve gasket, and attach it to the valve set.
2. For 40A: Attach the float protector and tighten the hexagon bolt to a torque of 9 Nm.
3. For 50A: Attach the float protector and spacer, and tighten the nut to a torque of 15 Nm.
4. Apply adhesive to the threads of the float. Then attach the float to the float arm.
5. Apply paste-like lubricant to the body gasket, and attach it to the body.
6. Attach the cover to the body and tighten the nut to a torque of 70 N·m (for TSF-13, 13F) or 100 N·m (for TSF-13CF).

Steam Lock Release (SLR) Accessory

If you need the product with Steam Lock Release (SLR), please let us know when you purchase. It cannot be attached to the standard product later. Steam locking occurs when the pipe to the trap is filled with steam and the steam prevents condensate from flowing into the trap. The SLR bypasses the Air Vent to discharge steam and prevent steam locking.

How to use SLR:

• To open the Air Vent: Turn the slotted head of SLR in the direction of A by a flathead screwdriver. The more you screw in, the more the Air Vent opens. Do not screw in beyond E ring stopper.
• To use the Air Vent normally: Turn the slotted head of SLR in the direction of B until it stops. At the time of product shipment, the SLR is in this state.

How to replace SLR:

1. Remove the SLR from Cover with a spanner (23 mm).
2. Apply a paste-like lubricant to the SLR Gasket, and attach it to the Cover.
3. Tighten the SLR with a wrench (23 mm) to a torque of 50 Nm.