Your location： Home > Marine valve > Butterfly valve > Manual butterfly valve

product name：CB-1258 Worm Gear Ventilation Butterfly Valve

Product number：
Product caliber：
Product pressure：
product material：

CB-1258 Worm Gear Ventilation Butterfly Valve Usage and Features CB-1258 Worm Gear Ventilation Butterfly Valve's main structural features 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 sealing performance is reliable, to ensure that the butterfly board does not connect when opened

CB-1258 Worm gear ventilation butterfly valve

Purpose and characteristics

The main structural features of CB-1258 worm gear 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 sealing performance is reliable, which ensures the 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 Worm gear ventilation butterfly valve (Figure 1)

CB-1258 Worm gear ventilation butterfly valve (Figure 2)

Standard related downloads:

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

船用及工業閥門廠家-【中船重工合作企業】生產:船用pv閥_不銹鋼閘閥_青銅蝶閥_船用止回閥_安全閥_濾器_呼吸閥

· 簡體中文

product name：CB-1258 Worm Gear Ventilation Butterfly Valve

Purpose and characteristics

Use standard

The main technical parameters

Material of main parts

Select the following customer service to communicate online immediately