The Yoshitake MS-4-13 is a noiseless heater designed for steam applications. It is constructed from corrosion-free cast stainless steel and effectively reduces noise when attached to the end of piping. The unit features a simple, trouble-free structure and is available in a higher temperature range compared to the MS-1 and MS-3 models.

Features

1. Noise can be reduced by attaching to the end of the piping.
2. Trouble-free simple structure.
3. Available in a higher temperature range than the MS-1 and MS-3.
4. Made of corrosion-free stainless steel (MS-4-13).

Specifications

Model	MS-4-13	MS-2
Application	Steam	Steam
Working pressure	0.1-0.7 MPa	0.1-0.7 MPa
Max. temperature	90°C	90°C
Material	Cast stainless steel	Bronze
Connection	JIS Rc screwed	JIS Rc screwed

Dimensions and Weights

Nominal size	d	C	B	Weight (kg)
15A	Rc 1/2	57	70	0.4
20A	Rc 3/4	71	93	0.8
25A	Rc 1	75	125	1.2
32A	Rc 1-1/4	105	155	2.2
40A	Rc 1-1/2	115	175	3.9
50A	Rc 2	142	220	5.4

Note: Nozzle shape, hole diameter and the number of holes are different depending on the nominal diameter. The weight values shown for MS-4-13 were derived from the original source.

Nominal Size Selection

Flow rate above is for reference only.

Formula for calculating the required nominal size: The steam volume $W$ required to raise the temperature of $Q$ amount of water by $B$ degrees Celsius in $A$ amount of time is calculated as follows:

$W = \frac{Q \times B}{A \times 500}$

Where:

• $W$: Steam volume (kg/h)
• $Q$: Water volume (kg)
• $B$: Desired temperature rise (°C)
• $A$: Desired time (h)

Based on the steam volume ($W$ kg/h) and steam pressure ($P$ MPa) values obtained by the above formula, the appropriate nominal size is selected using the "Nominal Size Selection Chart".

Noise Characteristics

Steam Pressure: 0.3 MPa

Steam Pressure: 0.5 MPa

Installation and Operation

Warning

• Do not touch the product by bare hands. Failure to follow this notice may cause burn or injury.
• Submerge the product (in the case of Fig. 3, the tip of the pipe) in the water (liquid) in the tank. Steam may spout out and result in burns.

Cautions

• The noiseless heater should be mounted 300mm or more from the tank's walls and bottom. Vibration may occur in a tank by the flow of a liquid.
• Use it within the maximum warning sound temperature limit. Otherwise, vibration in a tank and piping occurs.
• In order to obtain a result as planned, please fully utilize the nominal size selection chart.
• There are various methods in attachment and please take into consideration the blow-off position with the size of a tank etc.
• Submerge the product in the tank. If it is unavoidable, keep it as close to the water surface as possible.
• When using the method shown in Fig. 3, make the L dimension as short as possible.
• VB-7 vacuum relief valve is recommended in the piping in order to prevent a backflow condition when the steam is stopped.

Examples of Piping: