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product name：CB-1258 handle ventilation butterfly valve

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CB-1258 Ventilation Butterfly Valve Usage and Features The main structural features of CB-1258 handle ventilation butterfly valve are wafer-type and flange-type three-eccentric seals. The valve seat sealing ring adopts elastic seal and soft and hard compatible multi-level seal. Its reliable sealing performance ensures that the butterfly plate does not touch the seal when it is opened

CB-1258 Ventilation butterfly valve

Purpose and characteristics

The main structural features of CB-1258 handle ventilation butterfly valve are wafer-type and flange-type three-eccentric sealing. The seat ring adopts elastic seal and soft and hard compatible multi-level seal. Its reliable sealing performance ensures that when opened The butterfly plate does not contact the sealing seat, eliminating the uneven load of the sealing seat, extending the service life, and ensuring reliable sealing performance. It has the advantages of high temperature resistance, wear resistance and corrosion resistance. Widely used in petroleum, chemical and marine pipelines.

Use standard

Design standard: CB-1258 Flange connection size: JIS B2212 JIS B2213 JIS B2214 Structure length: JIS B2002-1987
Pressure test: JIS B2003-1987
Drive form: handle, worm gear, pneumatic, electric, etc.

The main technical parameters

Nominal diameter	DN	830W	830L
Nominal diameter	DN	2 ″ ～ 36 ″	2 ″ ～ 36 ″
Nominal pressure	PN	10K	20K
test pressure	Strength test	1.5	3.0
test pressure	Sealing experiment	1.1	2.2
Applicable medium	Water, seawater, steam, oil, etc.
proper temperature	-29 ～ 425 ℃

Material of main parts

Part Name	material
Valve body	WCB, 304, 316, 316SS, CF8M
Valve plate	WCB, 304, 316, 316SS, CF8M
Stem	316, 2Cr13, 1Cr18Ni9Ti
Sealing ring	316, fluorine plastic
filler	Flexible graphite, fluoroplastic

CB-1258 Handle ventilation butterfly valve (Figure 1)

CB-1258 Handle ventilation butterfly valve (Figure 2)

Standard related downloads:

CB-1258 handle ventilation butterfly valve.rarEnter the download address list

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product name：CB-1258 handle ventilation butterfly valve

Purpose and characteristics

Use standard

The main technical parameters

Material of main parts

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