TLV FL21 and FL32 QuickTrap series are universal balanced pressure thermostatic steam traps featuring a "fail open" design. These inline replaceable and cleanable two-bolt universal flange steam traps offer high air venting capability, making them ideal for steam mains, tracers, dryers, and heaters. The universal flange allows the trap to be positioned in the correct attitude regardless of pipeline configuration, and the two-bolt connector permits trap replacement or cleaning in minutes without disturbing the piping.

The rugged yet light construction withstands superheat and water hammer. It provides cyclic operation with fixed subcooling (up to 6°C) throughout the whole pressure range. Built-in screens in the connector and trap body protect the internals and keep trap module replacement costs low. The valve head and seat are made of hardened stainless steel for extended service life.

Specifications

Model	FL21	FL32
Connection	Screwed, Socket Welded, Flanged	Screwed, Socket Welded, Flanged
Size	1/2", 3/4", 1" / DN 15, 20, 25	1/2", 3/4", 1" / DN 15, 20, 25
Max. Operating Pressure (PMO)	21 barg	32 barg
Min. Operating Pressure	0.1 barg	0.1 barg
Maximum Back Pressure	90% of inlet pressure	90% of inlet pressure
Subcooling of X-element Fill	up to 6°C	up to 6°C
Type of X-element	C6	C6
Connector Unit	F46	F46
Trap Unit	L21	L32

Designed for use with the F46, F32 Connector Units and V1/V2 Trap Stations. Trap and Connector Units are sent as separate units for flexible installation.

WARNING

To avoid malfunctions, product damage, accidents or serious injury, install properly and DO NOT use this product outside the specification range. Local regulations may restrict the use of this product to below the conditions quoted.

Materials and Configuration

No.	Description	Material	ASTM/AISI
1	Trap Body	Cast Stainless Steel	A351 Gr.CF8
2	Connector Body	Cast Stainless Steel	A351 Gr.CF8
3	Connecting Flange	Carbon Steel	A105/A105M
4	Snap Ring	Carbon Steel	AISI 1055
5	Outer Connector Gasket	Graphite/Stainless Steel	-/AISI 304
6	Inner Connector Gasket	Graphite/Stainless Steel	-/AISI 304
7	Valve Seat	Stainless Steel	AISI 420F
8	Trap Cover	Carbon Steel	A105/A105M
10	Cover Gasket	Graphite/Stainless Steel	-/AISI 316L
11	Screen inside/outside	Stainless Steel	AISI 304/430
13	X-element	Stainless Steel	-
22	Steel Ball (Check Valve)*	Stainless Steel	AISI 440C

*For models FL21-C and FL32-C with built-in check valve.

Exploded View and Tightening Torques

Part & Number	Torque N·m (lbf·ft)	Distance Across Flats mm (in)
Cover Bolt 18	35 (26)	13 (1/2)
Valve Seat 7	35 (26)	19 (3/4)
Connector Bolt 8	39 (28)	14 (9/16)
Screen Holder (F46) 13	100 (73)	30 (1 3/16)

Dimensions

Screwed

Size	L (mm)	W (mm)	W1 (mm)	Weight (kg)
1/2"	80	169	105	1.8
3/4"	80	169	105	1.8
1"	96	171	109	2.1

Socket Welded

DN	L (mm)	W (mm)	W1 (mm)	φD (mm)	φC (mm)	h (mm)	Weight (kg)
15	80	169	105	36	21.8	12	1.8
20	80	169	105	36	27.2	12	1.8
25	96	171	109	44	33.9	14	2.1

Flanged (ASME Class 150RF / 300RF / 600RF)

DN	L (mm)	W (mm)	W1 (mm)	Weight (kg)*
15	150	169	105	3.4
20	150	169	105	4.3
25	160	171	109	4.8

*Weight is for DIN PN 25/40. Length and weight may vary for other standards.

Discharge Capacity

1. Differential pressure is the difference between the inlet and outlet pressure of the trap.
2. Recommended safety factor: at least 2.

Installation

TIP

Install the trap in the lowest part of the pipeline or equipment so the condensate flows naturally into the trap by gravity. The inlet pipe should be as short and have as few bends as possible.

1. The arrow on the connector body must point in the direction of condensate flow.
2. The connector body must be adjusted so that the connector flange face is in the vertical plane.
3. The nameplate on the trap unit must face upward.
4. Install a bypass valve to discharge condensate, and inlet and outlet valves to isolate the trap in the event of trap failure or maintenance.

Horizontal Piping Example:

Vertical Piping Example:

Separating/Attaching Trap and Connector Bodies

1. Loosen and remove the connector bolts, remove the entire trap unit from the connector body.
2. When reinstalling, new connector gaskets must be installed. Apply a small amount of suitable adhesive at 120° intervals around the outer edge of the gaskets to prevent loosening.
3. Align the bottom edge of the trap body with that of the connector body, making sure the gasket housings align with the corresponding recesses.
4. Insert the connector bolts and finger-tighten, keeping trap and connector bodies flush. Tighten to the proper torque.

Troubleshooting

If the expected performance is unachievable after installation, check the following points:

Problem	Cause	Remedy
Condensate is not discharged or discharge is poor	X-element is stuck to the valve seat	Clean
	Screens and/or inlet/outlet channels are clogged	Clean
	Steam-locking	Study piping
	Trap operating pressure exceeds maximum specified	Study inlet pressure
	Differential pressure is insufficient	Study inlet/outlet pressure
Steam leakage or blow-off	Valve closure is obstructed by rust or scale	Clean (inspect screens as well)
	X-element and/or valve seat are worn or damaged	Replace X-element and/or valve seat
	X-element is broken	Replace X-element
	Severe vibration of trap	Reinforce trap piping supports
Leakage from another location	Gaskets of connector, trap cover, screen holder or valve seat are worn	Repair gaskets
	Bolts or valve seat are loose	Tighten to proper torque
	Bypass valve is open or damaged	Repair or close valve

Optional Blowdown Valve BD2

The BD2 Blowdown Valve uses internal pressure to blow out condensate or steam (and scale/dirt) from inside the unit to atmosphere. Always wear eye protection and heat-resistant gloves when operating the blowdown valve. Do not use excessive force when opening the blowdown valve.