The TLV JH7RH-B is a reliable and durable low alloy cast steel free float steam trap designed for use on medium-size process equipment. It is suitable for both superheated and extremely high-pressure applications up to 120 barg.

Features

• Self-modulating free float provides continuous, smooth, low-velocity condensate discharge as process loads vary.
• Precision-ground float, constant water seal and three-point seating design ensure a steam-tight seal, even under no-load conditions.
• Thermostatic bimetal air vent valve vents air automatically for rapid startup.
• Built-in screen with large surface area ensures extended trouble-free operation.
• Easy, inline access to internal parts simplifies cleaning and reduces maintenance costs.

Options

For higher pressure and temperature applications, the JH7RH-P and JH7RH-W are manufactured with a cover threaded plug or socket connection instead of the bimetal air vent, allowing operation up to 530 °C.

Configuration

No.	Description	Material	DIN	ASTM/AISI
1	Body	Low Alloy Cast Steel A217 Gr.WC9	1.7379	-
2	Cover	Low Alloy Cast Steel A217 Gr.WC9	1.7379	-
3	Float	Stainless Steel SUS316L	1.4404	AISI316L
4	Orifice	-	-	-
5	Orifice Gasket	Graphite/Stainless Steel SUS316	-/1.4401	-/AISI316
6	Orifice Locknut	Stainless Steel SUS303	1.4305	AISI303
7	Outlet Cover Gasket	Graphite/Stainless Steel SUS309S+cb	-	-
8	Outlet Cover	Stainless Steel SUS420J2	1.4031	AISI420
9	Cover Bolt	Alloy Steel SNB16	1.7711	A193 Gr.B16
10	Cover Nut	Alloy Steel SNB7	1.7225	A193 Gr.B7
11	Cover Gasket	Graphite/Stainless Steel SUS309S+cb	-	-
12	Outlet Cover Bolt	Alloy Steel SNB16	1.7711	A193 Gr.B16
13	Outlet Cover Nut	Alloy Steel SNB7	1.7225	A193 Gr.B7
14	Screen	Stainless Steel SUS430	1.4016	AISI430
15	Screen Holder	Stainless Steel SUS304	1.4301	AISI304
16	Snap Ring	Stainless Steel SUS304	1.4301	AISI304
17	Screen Holder Retainer	Stainless Steel SUS304	1.4301	AISI304
18	Nameplate	Stainless Steel SUS304	1.4301	AISI304
19	Bimetal Air Vent Unit	-	-	-
20	Air Vent Guide	Stainless Steel SUS303	1.4305	AISI303
21	Air Vent Unit Gasket	Stainless Steel SUS316L	1.4404	AISI316L

Dimensions

Socket Welded

DN	L (mm)	H (mm)	H1 (mm)	φW (mm)	φD (mm)	φC (mm)	h (mm)	Weight (kg)
15	390	371 (382)	270	258	53.5	21.8	13	76
20	390	371 (382)	270	258	53.5	27.2	13	76
25	390	371 (382)	270	258	53.5	33.9	13	76
( ) JH7RH-W

Flanged

DN	L (ASME Class 900RF/1500RF) (mm)	H (mm)	H1 (mm)	φW (mm)	Weight (kg)
15	572	371 (382)	270	258	94
20	572	371 (382)	270	258	95
25	572	371 (382)	270	258	98
( ) JH7RH-W

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 saturated steam temperature.
4. Recommended safety factor: at least 1.5.

WARNING

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

Proper Installation

• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/closing should be carried out only by trained maintenance personnel.
• Use the eyebolts for removing the cover only; DO NOT use the eyebolts for hoisting the product.
• Take measures to prevent people from coming into direct contact with product outlets.
• Install for use under conditions in which no freeze-up will occur.
• Install for use under conditions in which no water hammer will occur.

1. Before installation, be sure to remove all protective seals.
2. Before installing the trap, blow out the inlet piping to remove all dirt and oil.
3. When hoisting the product, hang the rope around the inlet/outlet as close to the body as possible.
4. Install the steam trap within the allowable inclination. Also make sure that the arrow mark on the body corresponds with the direction of flow.
5. 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.
6. Support the pipes properly within 800 mm (2.5 ft) on either side of the trap.
7. Install a bypass valve to discharge condensate, and inlet and outlet valves to isolate the trap in the event of trap failure or when performing maintenance.
8. Install a check valve at the trap outlet whenever more than one trap is connected to the condensate collection pipeline.
9. The use of unions is recommended to facilitate connection and disconnection of screwed models.

Inspection and Maintenance

Operational inspections should be performed at least twice per year, or as called for by trap operating conditions. Steam trap failure may result in temperature drop in the equipment, poor product quality or losses due to steam leakage.

DANGER

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

Parts Inspection Procedure

Part	Inspection Item
Body, Cover(s)	Check inside for damage, dirt, grease, oil film, rust or scale
Gaskets	Check for warping or damage
Bimetal Plate	Check for damage
Air Vent Valve (and Seat)	Check for damage
Screen(s)	Check for clogging, corrosion or damage
Float	Check for deformation, damage, oil film or water inside
Orifice Opening	Check for rust, scale, oil film, wear or damage

Tightening Torques (JH7RH-B)

Part	Torque (N·m)	Distance Across Flats (mm)
Cover Nut	700	46
Outlet Cover Nut	200	30
Orifice Locknut	250	32
Air Vent Valve Seat	30	19
Air Vent Guide	100	24

Troubleshooting

Problem	Cause	Remedy
No condensate is discharged (blocked) or discharge is poor	Float is damaged or filled with condensate	Replace the float
	Orifice, screen or piping are clogged with rust or scale	Clean
	The bimetal is damaged	Replace with new bimetal
	The trap operating pressure exceeds the maximum specified pressure, or there is insufficient pressure differential	Compare specifications and actual operating conditions
	Steam locking has occurred	Blowdown through the bypass or close the trap inlet valve and allow the trap to cool
Steam is discharged or leaks from the trap outlet (blowing) (steam leakage)	Rust and scale have accumulated around the valve seat or under the float	Clean
	Orifice is damaged	Replace with new orifice
	Float is deformed or coated with scale	Clean or replace the float
	Trap is installed above the maximum allowable inclination angle	Correct the installation
	Vibration of trap occurs	Lengthen inlet piping, then fasten it securely
	The bimetal air vent valve surface and/or the air vent valve seat has a build-up or is scratched	Clean or replace with new bimetal and/or air vent valve seat
	The bimetal is damaged	Replace with new bimetal
Steam leaks from a place other than the trap outlet	Deterioration of or damage to gaskets	Replace the gaskets
	Leakage from eroded cavities of body or cover	Replace the trap
	Improper tightening torque for cover was used	Tighten to the proper torque
Float is frequently damaged	Water hammer occurs	Examine the piping for problems that can cause water hammer