Miyawaki TB7N-SR Temperature Control Steam Trap

Manufacturer: MIYAWAKI Inc.
Model: TB7N-SR

Features

Takes only 1/10th of the previous time required to remove scale
Disassembly before cleaning is no longer needed. Remove scale instantly by simply turning a handle with no need to stop the flow of steam. The time required is approximately 3 minutes per trap.

Elimination of flow channel-blocking scale
Lots of scale builds up in the flow channel (valve hole inlet and outlet) of temperature control traps. Scale removal work is performed from below the valve hole, so it is possible to get rid of all scale.

Pre-emptive action before closing performance deteriorates
This product enables efficient regular scale removal work. Poor closing performance caused by scale can be prevented through regular scale removal.

Superb durability
The MIYAWAKI SCCV (Self Closing and Centering Valve) System has the effect of increasing durability by achieving soft closing during operation.
Consisting of a free rotating valve that is centered and guided by the condensate flow, hence perfectly fitted in the valve seat even under extreme conditions of high pressure applications. This significantly reduces wear and erosion of the valve components.

Typical applications

Suitable for steam main lines, trace lines, and other such applications.

Dimensions/Weight

Screwed / Socket Weld

Size	Dimensions (mm)				Dimensions (in)				Weight
	L	H1	H2	W	L	H1	H2	W	(kg)	(lb)
1/2”	70	82	54	56	2.8	3.2	2.1	2.2	1,0	2.2
3/4”	80				3.2				1,1	2.4
1”									1,2	2.7

Flanged

JIS,ASME

Size	Dimensions (mm)				Dimensions (in)				Weight (kg)					Weight (lb)
	L	H1	H2	W	L	H1	H2	W	JIS(FF,RF)		JIS(RF)	ASME/JPI(RF)		JIS(FF,RF)		JIS(RF)	ASME/JPI(RF)
									10K,16K	20K	30K	150lb	300lb	10K,16K	20K	30K	150lb	300lb
1/2”	145	82	54	56	5.7	3.2	2.1	2.2	2,5	2,6	2,7	2,1	2,6	5.5	5.7	6.0	4.6	5.7
3/4”									2,9	3,0	3,1	2,6	3,5	6.4	6.6	6.8	5.7	7.7
1”									4,0	4,2	4,3	3,3	4,3	8.8	9.3	9.5	7.3	9.5

DIN PN40

Size	Dimensions (mm)				Dimensions (in)				Weight
	L	H1	H2	W	L	H1	H2	W	(kg)	(lb)
DN15	150	82	54	56	5.9	3.2	2.1	2.2	2,7	6.0
DN20									3,5	7.7
DN25	160				6.3				4,1	9.0

*Customized face-to-face dimensions on request.
*Please contact MIYAWAKI for further information.

Specifications

Model

Connection

Max. operating pressure

Max. operating differential pressure

Max. operating temperature

Adjustable range

Standard set temperature

Body material

Type

Size

PMO

(MPa)

PMO

(psig)

(MPa)

(psig)

TMO

(℃)

TMO

(℉)

(℃)

(℉)

(℃)

(℉)

TB7N-SR

Screwed

Rc,NPT

1/2”

2,1

305

2,1

305

230

446

50 – 200

122 – 392

100

(at 1,0MPa)

212
(at 145psig)

Forged steel

A105

3/4”

1”

TB7NF-SR

Flanged

FF,RF

1/2”

3/4”

1”

TB7NW-SR

Socket Weld

1/2”

3/4”

1”

*Installation in both horizontal and vertical piping is possible, but please install with a downward tilt to ensure condensate can easily run into the steam trap.

*It is possible to change the standard factory set temperature. Please specify the operating pressure and set temperature.

*Please refer to the installation manual how to adjust the set temperature.

Discharge Capacity

⊿t is the difference between the temperature of a temperature control trap when the valve is initially opened and condensate temperature. The temperature difference (⊿t) upon the initial passage of air is great, and indicates that the flow rate will also increase.

* Curve1 shows the trap’s maximum capacity when discharaging cold condensate.

**Curve2 shows the trap’s maximum capacity when discharaging hot condensate at a temperature of 10°C (18°F) below the adjusted temperature of the trap.