Yoshitake BSV-10F User manual

■EPDT-323a■
MODEL BSV-10F and BSV-20F
BELLOWS SEALED GLOBE VALVE
PRODUCT MANUAL .
Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the
product, please read this manual before use. This manual shall be kept with care for future references.
The symbols used in this manual have the following meanings.
Warning
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Caution
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
Table of Contents
1. Specifications···························································· 1
2. Structures, Dimensions, and Weights····························· 1
3. Storage and Installation··············································· 2
3.1 Precautions for storage and installation···················· 2
4. Operation ······························································· 2
4.1 Precautions for operation ····································· 2
5. Maintenance ··························································· 3
5.1 Precautions for maintenance and inspections ·········· 3
5.2 Periodic inspections ············································ 3
6. Troubleshooting ······················································· 3

1
1. Specifications
Model BSV-10F BSV-20F
Nominal size 15-150A
Application Steam, Air, Cold and hot water,
Oil, Other non-dangerous fluids
Max. pressure 1.4 MPa *12.8 MPa *1
Max. temperature 300°C *1350°C *1
Material
Body Ductile Cast Iron (Equivalent to FCD400)
Bonnet Ductile Cast Iron (Equivalent to FCD400)
Valve Stainless steel
Valve seat Stainless steel
Bellows Stainless steel
Connection JIS 10K FF JIS 20K RF
*1 : According to PT rating specified in JIS B 2051 ” Malleable iron and ductile iron valves.”
Caution
Please confirm that the indications on the product correspond with the specifications of the ordered
product model before use.
* If they are different, please contact us without using the product.
2. Structures, Dimensions, and Weights
BSV-10F
[mm]
Nominal size L H Weight
(kg)
15A 108 193 3.2
20A 117 193 3.6
25A 127 208 5.1
32A 140 216 6.2
40A 165 224 7.9
50A 203 228 10.0
65A 216 270
14.5
80A 241 295
18.0
100A 292 352
30.0
125A 356 380
43.0
150A 406 427
57.0

2
BSV-20F
[mm]
3. Storage and Installation
3.1 Precautions for storage and installation
Caution
1. The product must be stored indoors with good ventilation, little dust and low humidity.
2. Installation must be done by an experienced professional with proper protection for head, eyes,
and limbs.
3. When installing, check the direction of the product so that the fluid flowing and the arrow marked
on the product are in the same direction.
* Installing the product in wrong directions prevents the product from functioning properly.
4. When installing, align the product and the pipes to avoid excessive stress applied to the product.
5. Before installing the product, remove foreign substances and scale inside the piping.
* Failure to follow this notice may result in malfunction due to ingress of foreign substances.
6. If there is a possibility of freezing, take proper measures to remove water inside the product and
piping after use and also adopt anti-freezing measures.
4. Operation
4.1 Precautions for operation
Warning
Before flowing the fluid, make sure that there is no danger when the fluid flows to the end of piping.
* Failure to follow this notice may result in physical damage due to fluid outflow.
Caution
1. Do not use any tools for turning the handwheel.
* Using a tool damages the handwheel.
2. When using the product with its valve fully open, turn the handwheel clockwise by 45 degrees from
the fully open position to prevent the valve from being stuck.
Nominal size L H Weight
(kg)
15A 110 193 3.3
20A 120 193 3.8
25A 130 208 5.2
32A 160 201 6.2
40A 180 224 8.0
50A 230 228 10.2
65A 292 270
15.0
80A 318 295
21.0
100A 356 352
35.0
125A 400 380
51.0
150A 444 427
68.0

3
5. Maintenance
4.1 Precautions for Maintenance
Warning
Completely discharge the internal pressure of the product, piping, and equipment before maintenance
or inspection. If the fluid is hot, cool down the product to a level where you can touch it with bare hands.
* Failure to follow this notice may result in scalds, burn or injury.
Caution
1. Do not disassemble the product unless necessary.
2. Avoid rapid change of temperature and pressure to the product
3. Make sure that the piping is out of operation before dismounting the product from the piping.
5.2 Periodic inspections
Conduct periodic inspections once per month in order to maintain the optimal performance of the product.
Inspection Item:
Valve open/close operation is proper.
Abnormal noise is not be detected.
Outside leakage is not be detected.
In case of any failure, give a proper remedy referring to “6. Troubleshooting.”
6. Troubleshooting
Trouble Cause Remedy
Noflow 1. The product is closed.
1. Open the product.
2. Flange dust caps are not
removed.
2. Remove dust caps on the flanges.
Poor flow 1. The product is not open enough.
1. Fully open the product.
2. Piping is clogged. 2. Clean the piping.
Difficulty in
handwheel
operation
1. The spindle is dry. 1. Grease the spindle.
2. The gland packing is tightened
too much. 2. Slightly loosen the gland with keeping gland tightness enough.
Spindle
leakage 1. The bellows is damaged. 1. Tighten the gland until tightness is reached.
Replace the product as soon as possible.
Seat
leakage 1. Shutoff is not correct. 1. Tighten the handwheel by hand without
using a tool.
2. The valve seat or valve is
damaged.
2. Replace the product with a new one.
3. Foreign substances are stuck
between the valve and valve seat.
3. Clean the product. Install a strainer at the
inlet side of the product.
For any troubles other than above, please contact us.