Product Overview

TLV J3X/JF3X series is a free float steam trap equipped with a thermostatic air vent, constructed from ductile iron or cast iron with tight sealing and reliable performance, specifically designed for small process equipment. The product achieves continuous, smooth, low-velocity condensate discharge through a self-adjusting free float, combined with a thermostatic bellows (X-element) that automatically vents low-temperature air. The built-in large flow area strainer ensures trouble-free operation, and in-line maintainable internals significantly reduce maintenance costs and downtime.

Key Features

1. Load-adaptive discharge: When process load changes, the free float automatically adjusts to achieve continuous, smooth, low-velocity condensate discharge, adapting to different operating conditions.
2. Extended service life: Contains only one moving part (the float), avoiding concentrated wear, virtually maintenance-free, effectively extending equipment service life.
3. Automatic air venting: Equipped with "fail-open" thermostatic bellows (X-element) that automatically vents air below saturated steam temperature, preventing air binding from affecting system efficiency.
4. High reliability design: Built-in large flow area strainer blocks debris from entering the valve, ensuring long-term stable operation.
5. Convenient maintenance: Supports in-line replacement of internals with simple cleaning procedures, reducing maintenance costs and downtime losses.
6. Rich optional accessories: Air binding release valve LR3 available upon request for special application requirements.

Technical Specifications

Basic Parameters

Parameter	J3X Series	JF3X Series
Connection Type	Threaded (NPT and other standards available)	Flanged (DIN and other standards available)
Size (mm)	15, 20, 25	15, 20, 25
Orifice Number	2, 5, 8, 10, 21	2, 5, 8, 10, 16
Max Operating Pressure (MPaG)	0.2, 0.5, 0.8, 1.0, 2.1	0.2, 0.5, 0.8, 1.0, 1.6
Max Differential Pressure (MPa)	0.2, 0.5, 0.8, 1.0, 2.1	0.2, 0.5, 0.8, 1.0, 1.6
Min Operating Pressure (MPaG)	0.01	0.01
Max Operating Temperature (°C)	220	220
Max Allowable Pressure (MPaG)	2.1	1.6
Max Allowable Temperature (°C)	220	220
X-Element Type	Standard C6, optional C11 (*)	Standard C6, optional C11 (*)
X-Element Subcooling (°C)	Within 6, optional within 11	Within 6, optional within 11

Note: * When selecting C11 type X-element, steam trap capacity will be slightly reduced. Contact TLV for details; 1MPa = 10.197 kg/cm².

Capacity Information

• Capacity definition: Continuous discharge rate of condensate at 6°C below saturated steam temperature (unit: kg/h).
• Differential pressure: Refers to the pressure difference between inlet and outlet of the steam trap.
• Orifice correspondence: Numbers marked on capacity curves are orifice numbers; different orifice numbers match different capacity requirements (J3X exclusive orifice 21, JF3X exclusive orifice 16).
• Recommended safety factor: Not less than 1.5.

Dimensions and Weight

J3X Threaded Connection Dimensions and Weight (Unit: mm)

Size	L	H	H₁	W	Weight (kg)
15	120	130	75	80	2.7
20	120	130	72.5	80	2.8
25	120	137	75	80	3.0

Note: Thread standard defaults to NPT; other standards available on request.

JF3X Flanged Connection (Unit: mm)

Size	L (ASME)	L (ASME)	L (ASME)	L (ASME)	H	H₁	Weight* (kg)
	125FF	(150RF)	250RF	(300RF)
(15)	—	175	—	175	130	80	3.8
(20)	—	195	—	195	135	90	5.1
25	203	215	215	219	140	95	6.0

Note: * Weight corresponds to 250RF/300RF; other flange standards including DIN available on request, dimensions and weight may vary, contact TLV for details; 125FF can connect with 150RF, 250RF can connect with 300RF; ASME standards have no corresponding cast iron material, can only be paired with steel flanges.

Component Materials

No.	Mark	Component	Material	JIS	ASTM/AISI*
①		Body	Ductile Iron/Cast Iron	FCD450/FCV400	A536/A842 Gr.400
②		Cover	Ductile Iron	FCD450	A536
③ⁿ	F	Float	Stainless Steel	SUS316L	AISI316L
④		Orifice Plug	Carbon Steel	S25C	AISI1025
⑤	MR	Plug Gasket	PTFE	PTFE	PTFE
⑥	R	Orifice	—	—	—
⑦	MR	Orifice O-Ring	Synthetic Rubber	EPR	D2000CA
⑧	R	Inner/Outer Strainer	Stainless Steel	SUS430/304	AISI430/304
⑨	MR	Cover Gasket	PTFE	PTFE	PTFE
⑩		Nameplate	Stainless Steel	SUS304	AISI304
⑪	R	Float Guard	Stainless Steel	SUS304	AISI304
⑫	R	X-Element Guide	Stainless Steel	SUS304	AISI304
⑬	R	X-Element	Stainless Steel	—	—
⑭	R	Spring Clip	Stainless Steel	SUS304	AISI304
⑮	R	Air Vent Seat	Stainless Steel	SUS420F	AISI420F
⑯		Connector	Stainless Steel	SUS416	AISI416
⑰		Cover Bolt	Carbon Steel	S45C	AISI1045
⑱		Plug	Carbon Steel	S25C	AISI1025
⑲	MR	Plug Gasket	PTFE	PTFE	PTFE
⑳		Drain Plug Gasket**	Soft Iron	SUYP	AISI1010
㉑		Drain Plug**	Carbon Steel	S25C	AISI1025

Note: (M) = Maintenance parts; (R) = Repair parts; (F) = Float

Usage Notes

1. Do not exceed specifications: To avoid abnormal operation, accidents, or personal injury, do not use beyond the product's rated pressure, temperature, and other specifications.
2. Follow local standards: If local technical standards or regulations have special requirements for product specifications, follow local regulations.
3. Differential pressure limitation: Do not exceed the maximum differential pressure of the steam trap during use, otherwise condensate will accumulate and affect normal equipment operation.
4. Flange pairing: JF3X flanged type can only be paired with steel flanges, not with non-steel material flanges.