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◆purpose
Water-sealing valve: nominal pressure is 1.0~10MPa，work temperature under -29~425℃，work mediumis is water, steam, oil products and noncorrosive gas. Especially suitable as open and close fitting in vacuum pneumatic condensation system of fire and power station.
◆products feature
1、S/Z series adopt double disc, elastic sealing, open and close fast and convenience, reliable sealing.
2、Simple structure, tight and easy to examin. Long service life .
3、Must in full close or full ope. Cannot adjust flux.
4、Connection methods are flange conncection and welde joint. Driving mode are manual and electric drive.
◆Design and manufacture standard
Design and manufacture：GB/T12234
Flange dimension：GB/T9113 JB/T79
Pressure-temperature：GB/T12224
Face-to-face：GB/T12221
Butt welde dimension：－
Inspect and test：JB/T9092 GB/T13927
◆Specification
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Test pressure（MPa）
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Nominal pressure（MPa）
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1.0
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1.6
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2.5
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4.0
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6.4
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10.0
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Shell test
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1.5
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2.4
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3.75
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6.0
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9.6
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15.0
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Seal test
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1.1
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1.76
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2.75
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4.4
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7.04
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11.0
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Back seat test
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1.1
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1.76
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2.75
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4.4
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7.04
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11.0
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Gas seal test
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0.6
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0.6
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0.6
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0.6
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0.6
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0.6
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Application
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type
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Suitable temperature（℃）
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Suitable medium
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Carbon steel
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≤425
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water、steam、oil products、noncorrosive gas
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Alloy type
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≤540
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