VALQUA - Spiral wound gasket
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These gaskets have the best resilience of any metallic-composite type gaskets. Density of construction can be controlled to provide an optimum seal under various bolting conditions. They have high grade tolerance for flange surface finish irregularities. They are furnished in a wide variety of metals and filler materials. Sealing action results from the flow of the metal and soft filler plies when the gasket is compressed the recommended amount.

Spiral-wound gaskets are used for any circular or moderately non-circular applications where an approximate compressed thickness can be tolerated. They are particularly suited for assemblies subject to joint relaxation, temperature or pressure cycling, and shock or vibration. Excellent performance in joints restricting compression is provided, since their resiliency will compensate for modest flange separation.

Name
Cross section
Filler material
Asbestos paper
Expanded graphite
PTFE
Non-asbestos paper

Basic Type Spiral wound gasket

VALQUA No. 590
VALQUA No. 6590
VALQUA No. 7590
VALQUA No. 8590
Spiral wound gasket with outer ring
VALQUA No. 591
VALQUA No. 6591
VALQUA No. 7591
VALQUA No. 8591
Spiral wound gasket with inner ring
VALQUA No. 592
VALQUA No. 6592
VALQUA No. 7592
VALQUA No. 8592
Spiral wound gasket with inner and outer ring
VALQUA No. 596
VALQUA No. 6596
VALQUA No. 7596
VALQUA No. 8596

Metal Material

SUS304 Aluminium
SUS304L Titanium
SUS316 Nickel
SUS316L Monel Metal
SUS321 SPCC (inner/outer ring only)
SUS347  

APPLICATION RANGE BY FILLER MATERIALS

An economical white asbestos paper is extensively used for general services in thermal power plant, marine vessels, oil refineries, petrochemical plants, etc. However, the following proper use is suggestible to seal effectively.

Filler materials Applications
PTFE To seal strong acids
Asbestos tape To seal in all industries
Graphite tape To seal in the line to frequent changes of pressure and heat cycles
Inorganic synthetic fiber tape To seal in all industries

Available usage range

VALQUA No.
TEMPERATURE RANGE, C
PRESSURE LIMITATION Mpa
8590 SERIES
-200~500
29.4{300}
6590 SERIES
-200~400
29.4{300}
7590 SERIES
-250~300
19.6{200}
590 SERIES
-200~600
29.4{300}

Key for selection

STANDARD SIZE
FOR JIS PIPE FLANGE
10K , 20K , 30K, 40K, 63K
FOR JPI AND ANSI PIPE FLANGE
CLASS 150, 300, 400, 600, 900, 1500, 2500

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