Noiseless Heater Vacuum Relief Valve 16 heater.pdf · Noiseless Heater Vacuum Relief Valve Step 0 Type/Structure/Features Please refer to this for structure and feature of Noiseless

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16Noiseless HeaterVacuum Relief Valve

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Noiseless HeaterVacuum Relief Valve

Step 0 Type/Structure/Features Please refer to this for structure and feature of Noiseless

Heater and Vacuum Relief valve.

Step 1 Selection Please look at the ID chart to choose the right products

depending on the intended of uses. Confirm the additional

details on the product page.

Step 2 Sizing Please refer to P.16-6 to 7.

Step 3 Attention for usage Please check some guidelines for optimal usage of

Noiseless Heater and Vacuum Relief Valve such as

installation.

Purposes and Types of Noiseless Heaters

■Purposes of Noiseless Heaters

■Types and Principles of Noiseless Heaters

· A noiseless heater is used to reduce noise and vibration generated when steam is blown into water to produce hot

water.· A sound deadening effect can be expected by connecting a noiseless heater to piping simply.

MS-1

MS-2

MS-6

Steam and water are mixed and discharged from the outlet.* Noiseless heaters

cannot be used as direct mixing type inline heaters.

Steam is blown out from the nozzle and mixed with water.

Steam produces hot water while drawing water around.

60˚C

90˚C

90˚C

Simple in structure and trouble-free. Just attach to the end of piping.

Available in a higher temperature range than the MS-1.

Lotus root shape, compact, and produces less vibration and noise.

* The max. warning sound temperature limit means the upper limit temperature at which a sound deadening effect can be expected.

Lotus Root Shape Noiseless Heater MS-6

It is compact size and produces less noise.

Stainless steel made body offers outstanding durability.

The use of hot water is indispensable in food processing,

cleaning, and plating operations. Although the simplest

and most efficient way to provide the hot water is by a

direct heating format. Such format often results in

vibration and noise caused by steam blowing into the

water tank that can be greatly reduced by mounting an

MS-6 noiseless heater at the end of the pipe.

water

steam

Sound deadening principleMax. warning sound temperature limit * Features

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Noiseless Heater/Vacuum Relief Valve

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Why Vacuum Relief Valves are Necessary

Vacuum Relief Valve VB-7

VB-7

■NecessityA vacuum relief valve is used to introduce air into a device or piping and, at

the same time, prevent accidents attributable to a negative pressure

(vacuum).

■What is a Vacuum?A vacuum means a specific state of space filled with a gas whose pressure

is lower than the atmospheric pressure.

When it comes to setting under pressure, a vacuum relief valve is used to introduce air into a device or piping and, at

the same time, prevent accidents attributable to a negative pressure (vacuum). In addition, it ensures to prevent

water pulling at the time of steam stop in the meanwhile water from tank directly touched with steam and transform

into hot water.

VALVE CLOSE VALVE OPEN

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Vacuum Relief Valve ID-Charts

Noiseless Heater ID-Charts

Model Fluid Material

Pressure regulating

range(KPa)

Maximumtemperature

(˚C)Connection Size Feature Page

VB-7

Steam, Air

C3604

-0.5 to -81 200˚C JIS R

15-50A 16-9

VB--7S SUS304 15-50A · Stainless steel made 16-9

Model Fluid MaterialMaximumpressure

(MPa)

Max.warning sound

temperature limit(˚C)

Connection Size Feature Page

MS-1

Steam

CAC406

0.7 60˚C JIS Rc

15-50A · F-type 16-11

MS-3-13 SCS13 15-50A· F-type· Stainless steel made

16-11

MS-2

Steam

CAC406

0.7 90˚C JIS Rc

15-50A · S-type 16-12

MS-4-13 SCS13 15-50A· S-type· Stainless steel made

16-12

MS-6 Steam SUS304 0.7 90˚C JIS Rc 15-50A · Stainless steel made 16-13

* Please contact us about other specifications.

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eVACUUM RELIFE VALVES & NOISELESS HEATERS Control Charts

Sizing for Noiseless Heaters

■Flow Rate Chart

■MS-6 Noise Characteristic Chart

· MS-1, 3

· MS-6 · Steam pressure {0.3 MPa}

· Steam pressure {0.5 MPa}

· The noise characteristics of the MS-6 noiseless heater depend on the size and shape of the fluid tank, and the position where the noiseless heater is installed. Use these steam noise characteristic charts for reference.

· The noise levels are values measured at 1 meter above the water surface.

· MS-2, 4

1000

900

800

700

600

500

400

300

200

100

00.1 0.2 0.3 0.4 0.5 0.6 0.7

40A

32A

25A

20A

15A

50ANominal size

W: F

low

rat

e kg

/h

P: Steam pressure MPa

1000

900

800

700

600

500

400

300

200

100

00.1 0.2 0.3 0.4 0.5 0.6 0.7

50A

40A

32A

25A

15A

Nominal size

W: F

low

rat

e kg

/h


20A

1000

900

800

700

600

500

400

300

200

100

00.1 0.2 0.3 0.4 0.5 0.6 0.7

40A

32A

25A

20A

15A

Nominal size50A

W: F

low

rat

e kg

/h


80

70

60

30 40 50 60 70 80 900

Nominal size 15A-25A Nominal size 32A-50A

80

70

60

30 40 50 60 70 80 900Temperature ˚C

Noi

se le

vel:

dB

(A)

Temperature ˚C

Noi

se le

vel:

dB

(A)

Nominal size 15A-25A Nominal size 32A-50A

80

70

60

30 40 50 60 70 80 900

80

70

60

30 40 50 60 70 80 900Temperature ˚C

Noi

se le

vel:

dB

(A)

Temperature ˚C

Noi

se le

vel:

dB

(A)

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■Nominal Size Selection Chart

Sizing for Vacuum Relief Valve

45

40

35

30

25

20

15

10

–100 –20 –30 –40 –50 –70 –80 –60

5

0

50A

40A

32A

25A

15A・20A

Nominal sizeFl

ow

rat

e kg

/h

Pressure kPa

* Chart of the flow rate is for reference value.



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Guidelines for Noiseless Heater/Vacuum Relief Valve

<Calculation formula>The quantity of steam required to increase the temperature of Q kg of water by B˚C in time A (h) is:

　W = B x Q500 x A

W = = 560 (kg/h)(60 – 20) x 7000500 x 1

Select a nominal size by applying the calculated quantity of steam W and the steam pressure P to the flow rate chart for nominal size selection.(Note) Use the flow rate chart for nominal size selection for reference.

<Calculation example>When increasing the temperature of 7000 kg of water from 20˚C to 60˚C in an hour with 0.5 MPa steam

　W = B x Q500 x A

W = = 560 (kg/h)(60 – 20) x 7000500 x 1

· When an MS-2 silencer is used By applying the pressure of 0.5 MPa and the steam quantity of

560 kg/h to the flow rate chart for MS-2 nominal size selection, the nominal size of the MS-2 should be 50A.　

Solenoid valve

VB-7 Vacuum

relief valve

MS-6Noiseless heater

Solenoid valveVB-7

Vacuum relief valve


Stop valve

VB-7Vacuum

relief valve

Unit heater

Floattrap

Sight glass

Strainer

Stop valve

· Piping example of a noiseless heater without check valve

· Piping example of equipment for temperature regulation with vacuum relief valve



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eVacuum Relief Valve

VB-7,7S

1. Protects devices and piping by adjusting vacuum and preventing

accidents resulting from vacuum pressure.

2. Special valve structure ensures stable performance without

chattering and hunting.

3. Compact, lightweight and easy to handle.

4. Made of corrosion resistant material.

■Features

■Specification

■Dimensions (mm) and Weights (kg)

Steam, Air1.0 MPa

200˚C

JIS R screwed

Spring ASpring BSpring C

–0.5 to –21 kPa (Standard set pressure: –4 kPa)–21 to –48 kPa (Standard set pressure: –21 kPa)–48 to –81 kPa (Standard set pressure: –48 kPa)

ModelApplication

Working pressure

Pressure regulating range

Maximum temperature

Connection

Material

VB-7SVB-7

Stainless steelCast stainless steel

Stainless steel

BrassCast bronze

Brass

BodyValve

Valve seat

Nominal size15A20A25A32A40A50A

Weight0.500.500.751.051.452.45

100.0100.0112.5113.5130.0165.5

353541505565

d H AR 1/2R 3/4R 1R 1-1/4R 1-1/2R 2

(VB-7S)


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VB-7, 7S

■Example Piping Diagram


45

40

35

30

25

20

15

10

–100 –20 –30 –40 –50 –70 –80 –60

5

0

40A

32A

25A

Flo

w r

ate

kg/h

Pressure kPa

15A∙20A

Nominalsize50A

VB-7Vacuum relief valve

Discharge Strainer

Stopvalve

Sight glass

Floattrap

VB-7Vacuum relief valve

Stopvalve

Unit heater


Tank

<Piping example of temperature regulating equipment> <Piping example of noiseless heater without check valve>



Noiseless Heater

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MS-1,MS-3 (MS-3)

1. Noise can be reduced by attaching to the end of

the piping.

2. Trouble-free simple structure.

3. Made of corrosion-free stainless steel (MS-3-13).

■Features

■Specification

■Dimensions (mm) and Weights (kg) ■Nominal Size Selection Chart

ModelApplication

Working pressureMax. warning sound temperature limit

MaterialConnection

MS-1 MS-3-13Steam

0.05-0.7 MPa60˚C

JIS Rc screwedCast bronze Cast stainless steel


Weight0.40.40.81.02.04.0

100110140180200270

253035455065

d L50557090

100130

L1

50557090

100140

L2 H1

Rc 1/2Rc 3/4Rc 1Rc 1-1/4Rc 1-1/2Rc 2


1000

900

800

700

600

500

400

300

200

100

00.1 0.2 0.3 0.4 0.5 0.6 0.7

W: F

low

rat

e kg

/h

Nominalsize

40A

32A

25A

20A

15A

50A

Steam

Water



Noiseless Heater

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MS-2,MS-4 (MS-4)

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).

■Features

■Specification

■Dimensions (mm) and Weights (kg) ■Nominal Size Selection Chart

Steam0.1-0.7 MPa

90˚C

JIS Rc screwed

ModelApplication

Working pressureMax. warning sound temperature limit

MaterialConnection

MS-2 MS-4-13

Cast bronze Cast stainless steel


Weight0.5 (0.4)0.81.3 (1.2)3.2 (2.2)4.2 (3.9)7.0 (5.4)

577175

105115142

d C7093

125155175220

BRc 1/2Rc 3/4Rc 1Rc 1-1/4Rc 1-1/2Rc 2

W: F

low

rat

e kg

/h


1000

900

800

700

600

500

400

300

200

100

00.1 0.2 0.3 0.4 0.5 0.6 0.7

40A

32A

25A

20A

15A

Nominalsize50A

Steam


* Nozzle shape, hole diameter and the number of holes are different depending on the nominal diameter.

* The above values in parentheses are the weights of MS-4-13.


Noiseless Heater

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MS-6

1. Stainless steel made body offers outstanding

durability.

2. Easy to connect to piping, inexpensive.

3. Easy to maintain.

■Features

■Specification

Steam0.05-0.7 MPa

90˚CStainless steel

JIS Rc screwed

ApplicationWorking pressure

Max. warning sound temperature limitMaterial

Connection

■Dimensions (mm) and Weights (kg)Nominal size

15A20A25A32A40A50A

Weight0.250.400.520.771.152.99

48.54952555965

3545506070

105

d L DRc 1/2Rc 3/4Rc 1Rc 1-1/4Rc 1-1/2Rc 2

Steam


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MS-6


■Noise Characteristic Chart



W: F

low

rat

e kg

/h

1000

900

800

700

600

500

400

300

200

100

0


0.1 0.2 0.3 0.4 0.5 0.6 0.7

50A

32A

25A

Nominalsize

15A

40A

20A

80

70

60

30 40 50 60 70 80 900

Temperature ˚C

Nominal size 15A-25A

Noi

se le

vel:

dB

(A)

80

70

60

30 40 50 60 70 80 900

Temperature ˚C


Noi

se le

vel:

dB

(A)

80

70

60

30 40 50 60 70 80 900


Temperature ˚C

Noi

se le

vel:

dB

(A)

80

70

60

30 40 50 60 70 80 900

Temperature ˚C


Noi

se le

vel:

dB

(A)

· The steam noise characteristic chart depends on the size or shape of the liquid tank, the location of the noiseless heater, and other factors. Use it for reference.

· The noise level was measured at a point 1 meter above the water surface.



Noiseless Heater/Vacuum Relief Valve – AnnexN

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CAUTION Please refer to the manual attached to the product for procedures for installation and operation.

Caution for installation Noiseless Heater

Piping example Noiseless Heater

· To obtain a result as planned, fully utilize the nominal size selection chart.· There are various methods in attachment. Consider intake position and discharge position with the tank size, etc (see piping example).· Use noiseless heater with sinking under water inside tank. If used as piping example-B, makeℓlength as short as possible.· Install noiseless heater 300 mm or more away from wall or bottom of tank.· To prevent back flow phenomenon when steam is stopped, installation of VB-7 vacuum relief valve is recommended.

■For MS-1, 3

■For MS-2,4

■For MS-6

MS-1 to 6 Noiseless Heater – Annex


Noiseless Heater/Vacuum Relief Valve – Annex

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CAUTION Please refer to the manual attached to the product for procedures for installation and operation.

Troubleshooting Vacuum Relief Valve

Trouble Cause Remedy

Fluid leakage from cap can be checked visually or by sound.

Foreign substances are stuck on the contact ………face between valve and valve seat.Contact face between valve and valve seat is ………damaged.Malfunction occurs due to vibration at the piping ……where the product is installed.Difference between set pressure and normal …………pressure of the product is small.

Sliding part of valve and valve seat does not …………move smoothly.

Repair at our factory is needed.

Product disassembly and parts replacement are needed. Repair at our factory is needed.The product cannot be used for devices or equipments where large vibration occurs.Difference between set pressure and normal pressure has to be increased. To regulate set pressure again, regulation at our factory is needed.Disassembly and cleaning of the product is needed. Repair at our factory is needed.

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The product starts to work at pressure lower than set pressure.

Product specification is different with usage …………condition.

Pressure gauge is out of order. …………………………Set pressure of the product is distorted. ………………

Check the set pressure engraved on the plate of the product. If usage condition is different, replace the product.Calibrate or replace the pressure gauge.Repair at our factory is needed.

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The product does not work even at set pressure.

Product specification is different with usage …………condition.

Pressure gauge is out of order. …………………………Set pressure of the product is distorted. ………………Sliding part of valve and valve seat does not …………move smoothly.

Check the set pressure engraved on the plate of the product. If usage condition is different, replace the product.Calibrate or replace the pressure gauge.Repair at our factory is needed.Disassembly and cleaning of the product is needed. Repair at our factory is needed.

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Documents

Noiseless Heater Vacuum Relief Valve 16 heater.pdf · Noiseless Heater Vacuum Relief Valve Step 0 Type/Structure/Features Please refer to this for structure and feature of Noiseless