Yoshitake SCV-3, Product Manual, Page: 5 / 6

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7. Maintenance
7.1 Troubleshooting
Trouble Cause Remedy
Fluid does not flow.
1. Contact surface of body [1] and
disc [2] is stuck.
1. Replace the product if disc [2] does not
move.
2. Installation direction is wrong. 2. Confirm the arrow on the product and
install it correctly.
Fluid flows back.
1. Contact surface of body [1] and
disc [2] is worn away.
1. Replace the product.
2. Internal parts are damaged. 2. Replace the product.
7.2 Precaution for maintenance
Warning
Completely discharge the internal pressure from the valves, lines and equipment, and cool the valve down
to a level where you can touch it with bare hands before disassembly and inspection.
* Failure to do so may result in injury or burns due to residual pressure or spillage around the valve.
8. Connectable flange standard table
SCV-3
Nominal
size
JIS ASME
・
JPI PN(EN/DIN)
5K 10K* 16K 20K 125lb 150lb 250lb 300lb 6 10 16 25 40
15A
○ ○ ○ ○
×
○
×
○ ○ ○ ○ ○ ○
20A
○ ○ ○ ○
×
○
×
○ ○ ○ ○ ○ ○
25A
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
32A
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
40A ×
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
50A ×
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
65A
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
80A ×
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
100A ×
○ ○ ○ ○ ○ ○ ○
×
○ ○ ○ ○
”
○
” in the above table means connectable flange to the product. “×” means not connectable.
* Bundled bolts and nuts are for JIS 10K flange only.