The TLV J3S-X S1 and J3S-X S2 are cast stainless steel free float steam traps with thermostatic air venting (X-element), designed especially for use in rubber vulcanizer applications up to 1.4 MPaG (14 barg). They feature a cover plug for retrofitting a lock release valve against steam locking, a drain plug for installing a blowdown valve, and an internal screen with (S2) or without (S1) wire mesh. The traps discharge condensate continuously and automatically at a temperature slightly lower than saturation.

Features

1. Self-modulating free float provides continuous, smooth, low-velocity condensate discharge as process loads vary.
2. Precision-ground float, constant water seal, and three-point seating design ensure a steam-tight seal, even under no-load conditions.
3. Special thermostatic capsule (X-element) with "fail open" feature vents air automatically until close-to-steam temperature.
4. Cover plug can be removed to allow an LR3 lock release valve to be installed for combating steam locking.
5. Drain plug allows a manual or automatic valve to be installed for condensate blowdown.
6. S1 model eliminates wire mesh from the internal screen to help avoid clogging with rust and scale.

Specifications

Model	J3S-X S1	J3S-X S2
Connection	Screwed, Flanged	Screwed, Flanged
Size (Screwed)	1/2", 3/4", 1"	1/2", 3/4", 1"
Size (Flanged)	DN 15, 20, 25	DN 15, 20, 25
Orifice No.	10, 14	10, 14
Max Operating Pressure (PMO)	1.0, 1.4 MPaG	1.0, 1.4 MPaG
Max Differential Pressure (ΔPMX)	1.0, 1.4 MPa	1.0, 1.4 MPa
Max Operating Temperature (TMO)	220 °C	220 °C
Subcooling of X-element	up to 11 °C	up to 11 °C
Type of X-element	C11	C11
Internal Screen	φ1.2 mm punched hole (16 mesh eq.)	φ1.2 mm punched hole + wire mesh (60 mesh)

PRESSURE SHELL DESIGN CONDITIONS

(NOT OPERATING CONDITIONS):

• Maximum Allowable Pressure (PMA): 2.1 MPaG (21 barg)
• Maximum Allowable Temperature (TMA): 220 °C

Configuration and Materials

No.	Description	Material	DIN / ASTM
1	Body	Cast Stainless Steel	1.4312 / A351 Gr.CF8
2	Cover	Cast Stainless Steel	1.4312 / A351 Gr.CF8
3	Float	Stainless Steel	1.4404 / AISI 316L
4	Orifice Plug	Cast Stainless Steel	1.4312 / A351 Gr.CF8
6	Orifice	-	-
8	Screen	Stainless Steel	1.4016, 1.4301 / AISI 430, 304
9	Cover Gasket	Fluorine Resin PTFE	PTFE
13	X-element	Stainless Steel	-
20	Drain Plug	Stainless Steel	1.4305 / AISI 303
21	Cover Plug	Stainless Steel	1.4305 / AISI 303

Dimensions

Screwed Models

Size	L (mm)	H (mm)	H1 (mm)	W (mm)	Weight (kg)
1/2"	120	130	75	80	2.5
3/4"	120	130	72.5	80	2.6
1"	120	137	75	80	2.8

Flanged Models

DN	L (DIN PN25/40)	H (mm)	H1 (mm)	Weight (kg)
15	150	132	84	3.4
20	150	140	90	3.6
25	160	147	92	4.6

Discharge Capacity

1. Line numbers within the graph are orifice numbers.
2. Differential pressure is the difference between the inlet and outlet pressure of the trap.
3. Capacities are based on continuous discharge of condensate 6°C below saturation temperature.
4. Recommended safety factor: at least 1.5.

DANGER

DO NOT use this product under conditions that exceed maximum differential pressure, as condensate backup will occur!

Usage in Rubber Vulcanizers

In steam-using rubber vulcanizers, the heat plate moves up and down making it easy for steam locking to occur. This can result in condensate backup, which causes temperature drops.

Lock Release Valve (LR3)

The S series has a plug in the cover that can be removed to allow an LR3 lock release valve to be installed for combating steam locking. By opening the valve a tiny amount to release "locked" steam, the proper temperature can be ensured.

Blowdown Piping

A drain plug at the bottom of the body is equipped as standard. By removing the plug and installing a manual or automatic valve, condensate blowdown can be carried out when there is a temperature drop. (Note: Since the thread standard is G 1/4, a thread conversion fitting is needed for piping).

Proper Installation

Install the steam trap within the allowable inclination, as shown below. Also make sure that the arrow mark on the body corresponds with the direction of flow.

Piping Arrangement Requirements

• Install a catchpot with the proper diameter.
• Make sure the flow of condensate is not obstructed.
• To prevent rust and scale from flowing into the trap, connect the inlet pipe 25-50 mm above the base of the T-pipe.
• When installing on a blind end, make sure nothing obstructs the flow of condensate.

Inspection and Operational Check

Operational inspections should be performed at least twice per year, or as called for by trap operating conditions.

Condition	Description
Normal	Condensate is discharged continuously with flash steam and the sound of flow can be heard.
Blocked	No condensate is discharged. The trap is quiet and makes no noise, and surface temperature is low.
Blowing	Live steam continually flows from the outlet and there is a continuous metallic sound.
Steam Leakage	Live steam is discharged through the trap outlet together with the condensate and there is a high-pitched sound.

Troubleshooting

Problem	Cause	Remedy
No condensate is discharged (blocked)	Float is damaged or filled with condensate Orifice, screen or piping is clogged Steam-locking has occurred X-element is damaged	Replace the float Clean Blowdown through bypass or close inlet to cool trap Replace the X-element
Steam is discharged or leaks (blowing)	Rust and scale accumulated around orifice or under float Orifice is damaged Float is deformed or coated with scale Trap installed above maximum inclination	Clean Replace the orifice Clean or replace the float Correct the installation