The TLV JH15S-21 is a high-capacity, cast steel, inline maintainable float dynamic steam trap featuring a free float and piston combination. Designed specifically for the discharge of high condensate flow rates, this product is ideal for use on large process heat exchangers, heaters, dryers, or other steam equipment where massive quantities of condensate are generated. The self-modulating free float pilot mechanism ensures discharge at near-to-steam temperatures, while the proven piston valve allows for "pulsing" discharge at high flow rates and intermittent discharge at low flow rates.

Features

• Self-modulating free float pilot mechanism: Ensures discharge at near-to-steam temperatures.
• Proven piston valve: Allows "pulsing" discharge of condensate at high flow rates and intermittent discharge at low flow rates.
• Steam chamber design: Prevents damage to the valve and valve seat on closure.
• Inline maintainable: All internal parts are easily accessible without having to remove the trap from the line.
• Built-in screens: Two built-in screens with a large surface area ensure trouble-free operation.

WARNING

NEVER apply direct heat to the float. The float may explode due to increased internal pressure, causing accidents leading to serious injury or damage to property and equipment.

Specifications

Model	JH15E-21, JH15M-21, JH15S-21
Connection	Flanged
Size (DN)	100
Max. Operating Pressure (PMO)	21 barg
Max. Differential Pressure (ΔPMX)	21 bar
Min. Differential Pressure	0.5 bar
Max. Operating Temperature (TMO)	400 / 425 °C
Maximum Allowable Pressure (PMA)	50 barg (Pressure shell design condition)

Note: The minimum differential pressure is 0.05 MPa (0.5 bar). Do not use this product with a differential pressure less than this.

Configuration and Materials

Key materials include:

• Body: Cast Steel A216/A216M Gr.WCB (1.0619)
• Float: Stainless Steel SUS316L (1.4404)
• Float Screen: Stainless Steel SUS430 (1.4016)
• Main Valve Screen: Stainless Steel SUS304/430

Dimensions

Size (DN)	L (DIN PN25/40)	L (ASME 150RF)	L (ASME 300RF)	H	H1	W1	Weight (kg)
100	750 mm	766 mm	792 mm	635 mm	440 mm	250 mm	171 (182)

(Weight is for DIN PN 25/40. Value in parentheses is for ASME 300RF.)

Discharge Capacity

1. Differential pressure is the difference between the inlet and outlet pressure of the trap.
2. Capacities are based on continuous discharge of condensate 6 °C below saturated steam temperature.
3. Select the closest model with a capacity greater than the actual condensate load multiplied by a safety factor of 1.2.

DANGER

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

Principles of Operation

Valve Opens

At start-up, air is discharged manually through operation of the air vent valve on the top of the cover. When condensate flows into the product, the float rises due to buoyancy and the condensate flows through the orifice into the cylinder, creating a secondary pressure there. This secondary pressure pushes the piston up, opening the main valve and discharging the condensate that is inside the product.

Valve Closes

When condensate discharge is complete, the float falls, closing the orifice. When this happens, the secondary pressure in the cylinder escapes to the outlet through the tiny holes in the piston, causing the inlet pressure to push the main valve back down and closed. In this manner, condensate is intermittently discharged.

Piping Installation

Firmly secure piping immediately before and after the product. During operation (opening/closing of the main valve), discharging condensate and return flow may cause vibration (strong shocks), which could lead to severe pipeline shaking.

1. Horizontal piping sized according to the condensate load with a nominal size of up to 300 mm fitted with an eccentric reducer should be installed at the product inlet, with as few bends as possible.
2. The horizontal section of the trap outlet piping should be fitted with an eccentric increaser.
3. A flash steam velocity of approx. 30 to 35 m/s and a condensate velocity of ≤ 2 m/s are recommended for the outlet piping.
4. Schedule 160 piping is recommended for the outlet piping.
5. The product should be installed horizontally (inclined no more than 5° horizontally and front-to-back).

Inlet Horizontal Piping Length vs. Size:

Length (m)	Size (mm)
1.0	300
1.25	250
1.5	200
2.5	150
3.5	125
5.0	100

INFO

As a large amount of condensate is discharged at once, vibrations associated with operation occur. The vibration during operation can be reduced by ensuring the horizontal portion of the outlet pipe is of sufficient volume to accommodate the condensate load.

Troubleshooting

If the product fails to operate properly, use the following table to locate the cause and remedy.

Problem	Cause	Remedy
No condensate is discharged (blocked) or discharge is poor	The float is damaged or filled with condensate	Replace with a new float
	There is no inflow of condensate	Inspect and correct the piping
	The orifice opening or piping are clogged with rust and scale	Clean parts
	The trap operating pressure exceeds the maximum specified pressure or insufficient pressure differential	Compare specifications and actual operating conditions
	Air binding or steam-locking has occurred	Operate the lock release valve, perform a bypass blowdown or close the trap inlet valve and allow the trap to cool
Steam is discharged or leaks from the outlet (blowing/steam leakage)	The piston or cylinder is damaged or the exhaust holes in the main valve stem have become enlarged	Replace with a new piston, cylinder or main valve
	The piston or cylinder has a build-up of sticky scale	Clean parts
	The cylinder is installed in an incorrect orientation	Reinstall the piston with the correct orientation
	The small holes in the piston have become clogged	Clean parts
	The main valve has a build-up of sticky scale	Clean
	The main valve, cylinder or orifice is worn	Replace with new parts as required
Steam is leaking from a place other than the outlet	Gasket deterioration or damage	Replace with new gasket(s)
	Improper tightening torques were used	Tighten to the proper torque
Float is frequently damaged	Water hammer has occurred	Study and correct the piping