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Butterfly Valve
Product Size and Rated Pressure:
Wafer Type , Lug Type:
CLASS 150 (PN20) NPS 2~60 (DN50-1500)
Double Flanged Type:CLSSS 300 (PN50) NPS 2~60 (DN50-1500)
CLASS 600 (PN100) NPS 2~48 (DN50-1200)
CLASS 900 (PN150) NPS 6~36 (DN150-900)
Fire Safe Testing : ISO10497,API607
Top Flange Standrad: ISO5211
Connection Standrad: ANSI/ASME B16.5,ANSI/ASME B16.47,
ISO 7005,EN1092,DIN 2501
Face to Face Standrad: API 609,MSS SP-68,ISO 5752,EN 558-1
Test and Inspection: API 598,API 6D,ISO 5208,EN12266-2
With the excellent working performance ,this item is ideally suited for oil,chemical,
gas,power,metallurgy,water treatment,paper,marine,city heating system and medicament.
Design Features:
1.Packing is made of high-strength weaving graphite and weaving carbon fiber,providing reliable sealing performance.
2.Self-lubricated bearing can support shaft,eliminate abrasion.
3.Disc-shaft connection is achieved by key and thread pin with reliable performance,
the design can allow field replacement.
4.Disc sealing ring is formed by multiply non-corrosive alloy steel plate and graphite through the special compression technique.This lapped disc sealing ring offers positive sealing and minimizes the valve operating torque,lengthen service life.
5.Packing gland is two-section design advoiding shaft jamming due to tilting placement.
viding the highest strength and flowing capability.
7.Offset construction:unique offset construction reduces the abrasion between disc sealing ring and seat,prevents the leakage due to the abrasion,and increases the service life .
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