Directions for use of gasket
(i) Radiation resistanceCategory | Name | VALQUA No. | Main components | Radiation resistance(Gy) |
Soft gasket | Synthetic rubber (EPDM) Gaskets | 2010 -(EPDM) | EPDM | 5×105 |
Fluoro Rubber Gasket | 4010 | FKM | 1×104 | |
VALQUAFOIL Gasket | VF-30 | Expanded Graphite | 1×106 | |
VF-35E | Expanded Graphite +SUS |
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BLACK HYPER |
GF300 6500 6500AC 6501 |
Graphite+PTFE |
1×103 1×103 |
|
(reference) Compressed Asbestos Fiber Sheet |
(1500) (1500AC) |
Asbestos +Synthetic rubber binder |
1×104 | |
Pure PTFE sheet gasket | 7010 | PTFE | 1×102 | |
Pure FEP sheet gasket | 7010-FEP | FEP | 1×104 | |
Special filler inserted PTFE Solid Gasket | 7020 | PTFE +Inorganic filler |
1×102 | |
Fluorocarbon resin envelope gasket (for radiation resistance) |
N7030-FEP N7031-FEP N7035-FEP |
FEP +Compressed Non-Asbestos Fiber Sheet +Inorganic felt |
1×103 | |
Semi-metallic gasket | Spiral Wound Gasket | 8590 Series | Non-asbestos inorganic filler+Metal-hoop | 1×106 |
6590 Series | Expanded graphite filler +Metal-hoop |
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7590 Series | PTFE filler+Metal-hoop | 1×102 | ||
Metal jacketed gasket | N510 Series | Various metals +Non-asbestos cushion materials |
--- | |
N520 Series | ||||
Metal Gasket | Metal serrated gasket | 540 Series | Stainless steel, Monel, Nickel, Inconel, etc. | --- |
Metallic Flat Gasket | 560 Series | |||
Ring Joint Gasket | 550 Series | |||
(ii) Direction for use per plant
① For vacuum
② Shipbuilding-Non-asbestos gaskets to cargo piping systems(based on JIS F 0602)
Fluid category | Usage condition | Gasket | ||||
Pressure |
Temperature (℃) |
Name | Symbols | VALQUA No. | Thickness (mm) |
|
Oil fluids | 1.57 0.98 |
-25 ~ 120 |
Non-asbestos compressed fiber sheet | HJ | 6500 | 1.0 ~2.0 |
0.49 | Non-asbestos compressed fiber sheet | HJ | 6500 | 1.0 ~2.0 | ||
Glass fiber filled PTFE gasket | FS | 7010-2NO | 1.5 ~3.0 | |||
Animal/Plant oil fluids | 1.57 0.98 |
-25 ~ 120 |
Non-asbestos compressed fiber sheet ⑵ | HJ | 6500 | 1.0 ~2.0 |
PTFE envelope gasket ⑵ | FHS,FHF FHM |
N7030Series | 2.8 | |||
0.49 | Non-asbestos compressed fiber sheet ⑵ | HJ | 6500 | 1.0 ~2.0 | ||
Glass fiber filled PTFE gasket | FS | 7010-2NO | 1.5 ~3.0 | |||
PTFE envelope gasket(2) | FHS,FHF FHM |
N7030Series | 2.8 | |||
Solvent fluids | 1.57 0.98 |
-25 ~ 120 |
PTFE envelope gasket(1) | FHS FHF FHM |
N7030Series | 2.8 |
0.49 | Glass fiber filled PTFE gasket | FS | 7010-2NO | 1.5 ~3.0 | ||
PTFE envelope gasket(1) | FHS,FHF FHM |
N7030Series | 2.8 | |||
Liquid gas 1 | 1.96 1.57 |
-48 ~ 80 |
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 0.5 ~1.6 |
Non-asbestos filler spiral wound gasket | HUC | 8591V | 4.5 | |||
Non-asbestos filler spiral wound gasket | HUD | 8596V | 4.5 | |||
Expanded graphite filler spiral wound gasket | KUD | 6596V | 4.5 | |||
PTFE filler spiral wound gasket | FUD | 7596V | 4.5 | |||
0.98 | Non-asbestos compressed fiber sheet | HJ | 6500 | 1.0 ~2.0 | ||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 0.5 ~1.6 | |||
Non-asbestos filler spiral wound gasket | HUC | 8591V | 4.5 | |||
Non-asbestos filler spiral wound gasket | HUD | 8596V | 4.5 | |||
Expanded graphite filler spiral wound gasket | KUD | 6596V | 4.5 | |||
PTFE filler spiral wound gasket | FUD | 7596V | 4.5 | |||
0.49 | Non-asbestos compressed fiber sheet | HJ | 6500 | 1.0 ~2.0 | ||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 0.5 ~1.6 | |||
Liquid gas 2 | 0.98 | -196 ~ 80 |
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 0.5 ~1.6 |
Expanded graphite filler spiral wound gasket | KUD | 6596V | 4.5 | |||
0.49 | Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 0.5~1.6 |
Note
(1) PTFE envelope gaskets such as No. N7030(S), N7031(S) and N7035(S) are recommended under the pressure of 1.57 MPa. No. 8591V, No. 7596V and No.7010-2NO are recommended depending on the operating pressure since use of No. N7030 series may cause damage to the cushion materials of the gasket when they are used for pipes inside a tank.
(2) Please consult VALQUA when gasket complying with the Food Sanitation Act is needed.
(Details of fluid category)
Fluid Category | Liquid Category |
Oil fluids | Crude oil, naphtha⑴, gasoline⑴, diesel oil, kerosene, lubricating oil, heavy oil, hydraulic oil, mineral oil, jet fuel⑴, lubricating oil additive |
Animal/Plant oil, Fluids | linseed oil, tung oil, soybean oil, turpentine oil, corn oil, cottonseed oil, beef tallow oil, lard oil, fish oil, molasses⑵ |
Solvent fluids | benzene, toluene, xylene, ethylene dichloride, styrene, methanol, cumene⑶, ethylbenzene, ethylene glycol⑷ |
Liquid gas 1 | propane, butane, propylene, butadiene |
Liquid gas 2 | natural gas, ethane, ethylene, nitrogen |
Note
(1) There is a possibility that solvent additives are in these fluids. Please consult VALQUA for the possible bad effects on the gasket depending on the adulteration amount of the additives.
(2) Thus molasses does not belong to the animal plant oil category, it is categorized as it is for convenience.
(3) Isopropyl Benzene, and its chemical formula is C5H5CH(CH3)2. (It is described as cumene)
(4) Ethylene glycol does not belong to solvents, it is categorized as it is for the convenience.
③ Shipbuilding-Piping system in machinery space-Application for gaskets(based on JIS F 7102)
Fluid category | Usage condition | Gasket(3) | ||||
Pressure(1) MPa |
Temperature (℃) |
Name | Symbols | VALQUANo. | Thickness | |
(mm) | ||||||
Steam | 6.1 | 520 | Expanded graphite filler lined spiral wound gasket for high temperature (with inner and outer rings) | KKUD | 8596VL | 4.5 |
3.9 2.9 |
450 | Expanded graphite filler spiral wound gasket (with inner and outer rings)(2) | KUD | 6596V(2) | 4.5 | |
400 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 | ||
2 1.6 |
350 | Metal inserted expanded graphite gasket | MK | VF35E | 1.6 | |
220 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 | ||
Non-asbestos filler spiral wound gasket (with outer rings) | HUC | 8591V | 4.5 | |||
Expanded graphite filler spiral wound gasket (with inner and outer rings)(2) | KUD | 6596V | 4.5 | |||
0.5 | 158 | Non-asbestos compressed fiber sheet gasket | HJ | 6500 | 1.0 or 1.5 | |
Exhaust gas | 0.5 | 500 | Ceramic fiber cloth gasket with metal reinforcement | KHK | N314 | 3~6 |
0.5 | 400 | Glass fiber cloth gasket | GK | N214 | 3~6 | |
Metal inserted expanded graphite gasket | MK | VF35E | 1.6 | |||
Air | 2.9 2.0 |
100 | Expanded graphite filler spiral wound gasket (with inner and outer rings)(2) | KUD | 6596V | 4.5 |
100 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 | ||
Non-asbestos filler spiral wound gasket (with outer rings) | HUC | 8591V | 4.5 | |||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
Non-asbestos compressed fiber sheet gasket | HJ | 6500 | 1.0 or 1.5 | |||
1.6 1.0 0.5 |
100 | Non-asbestos compressed fiber sheet gasket | HJ | 6500 | 1.0 or 1.5 | |
100 | ||||||
100 | ||||||
Feed water Boiler water Blowoff Sweet water Condensed water Seawater Bilge Ballast |
7.8 | 250 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 |
4.4 | 200 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 | |
Non-asbestos filler spiral wound gasket (with outer rings) | HUC | 8591V | 4.5 | |||
2.9 2.0 |
200 | Non-asbestos filler spiral wound gasket (with inner and outer rings) | HUD | 8596V | 4.5 | |
150 | Non-asbestos filler spiral wound gasket (with outer rings) | HUC | 8591V | 4.5 | ||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
1.6 | 100 | Non-asbestos compressed fiber sheet gasket | HJ | 6500 | 1.0 or 1.5 | |
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
0.5 | 50 | Cloth-inserted rubber sheet | NG | 16 | 1.5 | |
Non-asbestos compressed fiber sheet gasket | HJ | 6500 | 1.0 or 1.5 | |||
Fuel oil Cargo oil Lubricating oil |
2.9 1.6 |
150 | Non-Asbestos Spiral Wound Gasket (with inner and outer rings) | HUD | 8596V | 4.5 |
150 | Non-Asbestos Spiral Wound Gasket (with outer rings) | HUC | 8591V | 4.5 | ||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
1.0 | 135 | Non-asbestos compressed sheet gasket | HJ | 6500 | 1.0 or 1.5 | |
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
Heat trnsfer fluid | 1.0 | 330 | Expanded graphite spiral wound gasket(2) | KUD | 6596V | 4.5 |
Vacuum (1) |
0.006 abs. (722 torr) | 220 | Non-Asbestos Spiral Wound Gasket (with inner and outer rings) | HUD | 8596V | 4.5 |
Non-Asbestos Spiral Wound Gasket (with outer rings) | HUC | 8591V | 4.5 | |||
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 | |||
0.005 abs. | 100 | Non-asbestos compressed sheet gasket | HJ | 6500 | 1.0 or 1.5 | |
Metal inserted expanded graphite gasket | MK | VF35E,VFT35E | 1.6 |
Note
(1) As to pressures, the pressure for non-asbestos compressed fiber sheet gasket and the pressure for vacuum indicate actual working pressure and other pressures indicate flange pressure rating.(2) Expanded graphite filler spiral wound gasket should be used at 450℃ or lower.
(3) Ring gasket (inside bolt circle gasket) should be used.