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7.1 Troubleshooting
Trouble
Fluid does not flow.
Fluid flows back.
7.2 Precaution for maintenance
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.
SCV-3
Nominal
5K
10K*
size
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.
Cause
1. Contact surface of body [1] and
disc [2] is stuck.
2. Installation direction is wrong.
1. Contact surface of body [1] and
disc [2] is worn away.
2. Internal parts are damaged.
8. Connectable flange standard table
JIS
16K
20K
125lb 150lb 250lb 300lb
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
7. Maintenance
1. Replace the product if disc [2] does not
2. Confirm the arrow on the product and
1. Replace the product.
2.
Warning
ASME・JPI
×
×
○
×
×
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
‐4‐
Remedy
move.
install it correctly.
Replace the product.
PN(EN/DIN)
6
10
16
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
×
○
○
25
40
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
■ EPDT-284c■
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