| Valqua No. |
Cross Section |
Application |
| N510 |
 |
heat exchanger, valve bonnet
pressure vessel
tower, tank
pipe flange |
| N6510 |
 |
| N520 |
 |
heat exchanger, valve bonnet
pressure vessel
tower, tank
pipe flange |
| N6520 |
 |
| N530 |
 |
manhole/hand hole of boiler,
steam trap, sight glass |
| N570 |
 |
manhole of boiler,
steam trap, sight glass |
| N580 |
 |
heat exchanger, valve bonnet
pressure vessel
tower, tank
pipe flange |
| N6580 |
 |
 |
| Core Material and Temperature Limitation |
|
| Core Material |
Temperature Limitation  (1) |
| Non-asbestos inorganic materials |
(800)(2) |
| VALQUAFOIL Tape |
400(3) |
|
| Notes |
(1) Gasket temperature limit depending on the metal used in combination with the gasket.
(2) For use at 800 and higher, consult Nippon Valqua.
(3) In the case of sticking the tape to the surface of metal-jacketed gasket. |
|
| Production Range |
unit:mm |
|
| materials |
Min. ID |
Max. OD(1) |
| Low Carbon Steel |
12 |
1,200 |
| copper |
10 |
980 |
| SUS304 |
15 |
1,200 |
| SUS304L |
| SUS316 |
| SUS316L |
| SUS321 |
| SUS347 |
980 |
| SUS410 |
| 5Cr-0.5Mo Steel |
1,200 |
| Brass |
980 |
| Aluminum bronze |
| Monel metal |
580 |
| Titanium |
980 |
| Nickel |
580 |
| Aluminum |
12 |
980 |
| Lead |
15 |
1,440 |
|
| Note (1) |
Manufacturing
range without welding |
| Remarks: |
Minimum
gasket width 5 mm |
|
|
