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Design Features
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Bolted bonnet, welded bonnet or pressure seal bonnet
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Plug disc with contoured spherical seat area
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Low emission graphite gland packing
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ISO 5211 integral mounting pads
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Optional Features
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Seal welded seats across full range
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Flanged, hub or butt-weld ends
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Resilient soft seats for positive shut-off
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Stop-check or screw non-return
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Guided disc for use in vertical pipelines
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Bonnet extension for cryogenic service
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Bypass & drain connections
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Indicator & locking devices
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Extension shaft for remote operation
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